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  • Inorganic Chemistry  (10,539)
  • Industrial Chemistry  (2,363)
  • Life and Medical Sciences  (1,622)
  • Aircraft Propulsion and Power  (78)
  • 1955-1959  (4,838)
  • 1950-1954  (3,622)
  • 1925-1929
  • 1915-1919
Collection
Keywords
Publisher
Years
Year
  • 1
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    Effects of Nose Radius and Extreme Cooling on Boundary-Layer Transition for Three Smooth 15-Cone-Cylinders in Free Flight at Mach Numbers to 8.50 (1959)
    In:  CASI
    Details
    Publication Date: 2019-05-11
    Description: Three highly polished 15- included- angle cone- cylinders with hemispherical tips of several diameters ( 2, 3, and 4 in.) have been flown in order to obtain boundary- layer transition data at very low wall to local stream temperature ratios, and heat- transfer data. All surfaces had a 2-microinch average roughness height. Laminar flow existed over the entire hemispherical nose of the 2- and 3-inch-tip- diameter models throughout the complete flight history. Extreme cooling to wall to local stream temperature ratios at the sonic point as low as 0.20 did not cause transition on the nose for diameters as large as 3 inches. However, extreme cooling did cause early transition on the 4-inch model where it appears probable that transition occurred forward of the 45 station at a wall to local stream temperature ratio of about 0.26. Variations in tip diameter influenced transition downstream of the nose under conditions of extreme cooling. The 2-inch- tip model was laminar at all cone- cylinder stations at temperature ratios as low as 0.32 whereas the 3- and 4-inch-tip models were turbulent at the same local flow conditions but at higher wall to local temperature ratios. Transition on the cone and cylinder of the 3- and 4-inch- tip bodies appeared to be sensitive to local Mach number, and occurred at higher local temperature ratios when values of local Mach number were higher. Increasing the nose diameter from 2 to 3 inches significantly changed the local flow conditions for which laminar flow existed on the cone- cylinder afterbody. However, a further increase in tip size t o a 4-inch diameter had no discernable effect on the local flow conditions at transition. The transition results of the 3- and 4-inch-nose-diameter smooth bodies are similar to those observed on a 7/8-inch-nose-diameter body with roughened surfaces. Turbulent boundary layers resulted in both cases at very low wall to local stream temperature ratios. Both laminar and turbulent heat-transfer data were in good agreement with theoretical Stanton numbers when heat-transfer reduction due to tip blunting was considered.
    Keywords: Aircraft Propulsion and Power
    Type: NASA-MEMO-3-4-59E , GRC-E-DAA-TN65086
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  • 2
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    Effect of Stator and Rotor Aspect Ratio on Transonic-Turbine Performance (1959)
    In:  CASI
    Details
    Publication Date: 2019-08-17
    Description: The effect of stator and rotor aspect ratio on transonic-turbine performance was experimentally investigated. The stator aspect ratios covered were 1.6. 0.8, and 0.4, while the rotor aspect ratios investigated were 1.46 and 0.73. It was found that the observed variation in turbine design-point efficiency was negligible. Thus, within the range of aspect ratio investigated, these results verify for turbines operating in the transonic flow range the finding of a reference report, which showed analytically that, if blade shape and solidity are held constant, the aspect ratio may be varied over a wide range without appreciable change in turbine efficiency.
    Keywords: Aircraft Propulsion and Power
    Type: NASA-MEMO-2-11-59E , E-177
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  • 3
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    Experimental Evaluation of Cermet Turbine Stator Blades for Use at Elevated Gas Temperatures (1959)
    In:  CASI
    Details
    Publication Date: 2019-08-17
    Description: The suitability of cermets for turbine stator blades of a modified turbojet engine was determined at an average turbine-inlet-gas temperature of 2000 F. Such an increase in temperature would yield a premium in thrust from a service engine. Because the cermet blades require no cooling, all the available compressor bleed air could be used to cool a turbine made from conventional ductile alloys. Cermet blades were first run in 100-hour endurance tests at normal gas temperatures in order to evaluate two methods for mounting them. The elevated gas-temperature test was then run using the method of support considered best for high-temperature operation. After 52 hours at 2000 F, one of the group of four cermet blades fractured probably because of end loads resulting from thermal distortion of the spacer band of the nozzle diaphragm. Improved design of a service engine would preclude this cause of premature failure.
    Keywords: Aircraft Propulsion and Power
    Type: NASA-MEMO-2-13-59E , E-147
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  • 4
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    Air-Cooled Turbine Blades with Tip Cap For Improved Leading-Edge Cooling (1959)
    In:  CASI
    Details
    Publication Date: 2019-08-17
    Description: An investigation was conducted in a modified turbojet engine to determine the cooling characteristics of the semistrut corrugated air- cooled turbine blade and to compare and evaluate a leading-edge tip cap as a means for improving the leading-edge cooling characteristics of cooled turbine blades. Temperature data were obtained from uncapped air-cooled blades (blade A), cooled blades with the leading-edge tip area capped (blade B), and blades with slanted corrugations in addition to leading-edge tip caps (blade C). All data are for rated engine speed and turbine-inlet temperature (1660 F). A comparison of temperature data from blades A and B showed a leading-edge temperature reduction of about 130 F that could be attributed to the use of tip caps. Even better leading-edge cooling was obtained with blade C. Blade C also operated with the smallest chordwise temperature gradients of the blades tested, but tip-capped blade B operated with the lowest average chordwise temperature. According to a correlation of the experimental data, all three blade types 0 could operate satisfactorily with a turbine-inlet temperature of 2000 F and a coolant flow of 3 percent of engine mass flow or less, with an average chordwise temperature limit of 1400 F. Within the range of coolant flows investigated, however, only blade C could maintain a leading-edge temperature of 1400 F for a turbine-inlet temperature of 2000 F.
    Keywords: Aircraft Propulsion and Power
    Type: NASA-MEMO-2-9-59E
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  • 5
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    Investigation of a 4.5-Inch-Mean-Diameter Two-Stage Axial-Flow Turbine Suitable for Auxiliary Power Drives (1959)
    In:  CASI
    Details
    Publication Date: 2019-08-16
    Description: The design and experimental investigation of a 4.5-inch-mean-diameter two-stage turbine are presented herein and used to study the effect of size on the efficiency of turbines in the auxiliary power drive class. The results of the experimental investigation indicated that design specific work was obtained at design speed at a total-to-static efficiency of 0.639. At design pressure ratio, design static-pressure distribution through the turbine was obtained with an equivalent specific work output of 33.2 Btu per pound and an efficiency of 0.656. It was found that, in the design of turbines in the auxiliary power drive class, Reynolds number plays an important part in the selection of the design efficiency. Comparison with theoretical efficiencies based on a loss coefficient and velocity diagrams are presented. Close agreement was obtained between theory and experiment when the loss coefficient was adjusted for changes in Reynolds number to the -1/5 power.
    Keywords: Aircraft Propulsion and Power
    Type: NASA-MEMO-4-6-59E
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  • 6
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    Application of Gas Analysis to Combustor Research (1959)
    In:  CASI
    Details
    Publication Date: 2019-08-15
    Description: The performance of turbine-engine combustors usually is given in terms of operating limits and combustion efficiency. The latter property is determined most often by measuring the increase in enthalpy across the combustor through the use of thermocouples. This investigation was conducted to determine the ability of gas-analytical techniques to provide additional information about combustor performance. Gas samples were taken at the outlet and two upstream stations and their compositions determined. In addition to over-all combustion efficiency, estimates of local fuel-air ratios, local combustion efficiencies, and heat-release rates can be made. Conclusions can be drawn concerning the causes of combustion inefficiency and may permit corrective design changes to be made more intelligently. The purpose of this investigation was not to present data for a given combustor but rather to show the types and value of additional information that can be gained from gas-analytical data.
    Keywords: Aircraft Propulsion and Power
    Type: NASA-MEMO-1-26-59E , E-245
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  • 7
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    Exploratory Investigation of Aerodynamic Flameholders for Afterburner Application (1959)
    In:  CASI
    Details
    Publication Date: 2019-08-15
    Description: An investigation was conducted to determine the flameholding capabilities of aerodynamic jets at afterburner operating conditions. Stability data for a number of aerodynamic flameholders were obtained in a 5- by 5-inch test section at inlet-air reference velocities up to 600 feet per second, an inlet-air temperature of 1250 F, and a combustor-inlet pressure of 15 inches of mercury absolute. Combustion efficiency and stability data of the more promising combinations were then obtained in a 10- by 12-inch test section at the same test conditions. Both air and stoichiometric mixtures of fuel and air were used in the jets; mixture flow rates were approximately 1 percent by weight of the total air-flow rate. Injection pressures were limited to values that might be available from compressor-bleed air. At a reference velocity of 600 feet per second, aerodynamic flame-holders alone were unable to maintain a stable flame at injection pressures up to 70 pounds per square inches large reductions in velocity were required to achieve flame stabilization. When the aerodynamic jets were used in combination with a V-gutter flameholder with approximately a 30 percent blocked area, flame stabilization was attained at a velocity of 600 feet per second; however, the combustion efficiencies of the various combinations were no greater than that obtained with the V-gutter alone.
    Keywords: Aircraft Propulsion and Power
    Type: NASA-MEMO-4-9-59E
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  • 8
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    Comparison of Calculated and Experimental Total-Pressure Loss and Airflow Distribution in Tubular Turbojet Combustors with Tapered Liners (1959)
    In:  CASI
    Details
    Publication Date: 2019-08-15
    Description: Incompressible-flow calculations were performed to determine the effects of combustor geometric and operating variables on pressure loss and airflow distribution in a tubular combustor with a tapered liner. The calculations include the effects of momentum transfer between annulus and liner gas streams, annulus wall friction, heat release, and discharge coefficients of liner air-entry holes. Generalized curves are presented which show the effects of liner-wall inclination, liner open hole area, and temperature rise across the combustor on pressure loss and airflow distribution for a representative parabolic liner hole distribution. A comparison of the experimental data from 12 tapered liners with the theoretical calculations indicates that reasonable design estimates can be made from the generalized curves. The calculated pressure losses of the tapered liners are compared with those previously reported for tubular liners.
    Keywords: Aircraft Propulsion and Power
    Type: NASA-MEMO-11-26-58E , E-126
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  • 9
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    Performance of Typical Rear-Stage Axial-Flow Compressor Rotor Blade Row at Three Different Blade Setting Angles (1959)
    In:  CASI
    Details
    Publication Date: 2019-08-15
    Description: A comparison of the performance of a single-stage rotor run at three different blade setting angles is presented. The rotor was of a design typical for a last stage of a multistage compressor. At each setting angle, the rotor blade row was operated from 53 to 100 percent of equivalent maximum speed (850 ft/sec tip speed) at constant inlet pressure. Hot-wire anemometry was used to observe rotating-stall and surge patterns in time unsteady flow. Results indicated that an increase in peak pressure ratio and an increase in maximum equivalent weight flow were obtained at each speed investigated when the blade setting angle was decreased. An increase in peak efficiency was achieved with decrease in blade setting angle for part of the range of speeds investigated. However, the peak efficiencies for the three blade setting angles were approximately the same at the maximum speed investigated. The flow ranges for all three configurations were about the same at minimum speed and decreased at almost the same rate when the rotative speed was increased through part of the range of speeds investigated. At maximum speed, the flow range for the smallest setting angle was considerably less than the flow range for the other two configurations. A decrease in efficiency and flow range for the smallest blade setting angle at maximum speed can be attributed primarily to a Mach number effect. In addition, because of the difference in projected axial chord lengths at the casing wall, some effect on performance could be expected from the change in three-dimensional flow occurring at the tip. Rotating-stall characteristics for the two smaller blade setting angles were essentially the same. Only surge could be detected for the largest blade setting angle in the unstable-flow region of operation.
    Keywords: Aircraft Propulsion and Power
    Type: NASA-MEMO-11-27-58E , E-117
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  • 10
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    Investigation of the Effects of Low Reynolds Number Operation on the Performance of a Single-Stage Turbine with a Downstream Stator (1959)
    In:  CASI
    Details
    Publication Date: 2019-08-15
    Description: High-altitude turbojet performance is adversely affected by the effects of low air density. This performance loss is evaluated as a Reynolds number effect, which represents the increased significance of high fluid viscous forces in relation to dynamic fluid forces as the Reynolds number is decreased. An analytical and experimental investigation of the effects of low Reynolds number operation on a single-stage, high-work-output turbine with a downstream stator was carried out at Reynolds numbers of 182,500, 39,600, and 23,000, based on average rotor-design flow conditions. At low Reynolds numbers and turbulent flow conditions, increased viscous losses caused decreased effective flow area, and thus decreased weight flow, torque, and over-all efficiency at a given equivalent speed and pressure ratio. Decreasing the Reynolds number from 182,500 to 23,000 at design equivalent speed resulted in a 5.00-point loss in peak over-all turbine efficiency for both theory and experiment. The choking equivalent weight flow decreased 2.30 percent for these conditions. Limiting loading work output was reached at design equivalent speed for all three Reynolds numbers. The value of limiting loading work output at design speed decreased 4.00 percent as Reynolds number was decreased from 182,500 to 23,000. A theoretical performance-prediction method using basic boundary-layer relations gave good agreement with experimental results over most of the performance range at a given Reynolds number if the experimental and analytical design operating conditions were carefully matched at the highest Reynolds number with regard to design performance parameters. High viscous losses in the inlet stator and rotor prevented the attainment of design equivalent work output at the lowest Reynolds number of 23,000.
    Keywords: Aircraft Propulsion and Power
    Type: NASA-TM-X-9
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  • 11
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    Engine Operating Conditions that Cause Thermal-Fatigue Cracks in Turbojet-Engine Buckets (1959)
    In:  CASI
    Details
    Publication Date: 2019-08-16
    Description: Five engine tests were conducted to definitely establish the failure mechanism of leading-edge cracking and to determine which conditions of engine operation cause the failures. Five groups of S-616 and M-252 buckets from master lots were run consecutively in the same J47-25 engine. The tests included a steady-state run at full-power conditions, rapid cycling between idle and rated speed, and three different start-stop tests. The first start-stop test consisted of cycles of start and stop with 5 minutes of idle speed before each stop; the second included cycles of start and stop but with 15 minutes of rated speed before each stop; the third consisted of cycles of gradual starts and normal stops with 5 minutes at idle speed before each stop. The test results demonstrated that the primary cause of leading-edge cracking was thermal fatigue produced by repeated engine starts. The leading edge of the bucket experiences plastic flow in compression during starts and consequently is subjected to a tensile stress when the remainder of the bucket becomes heated and expands. Crack initiation was accelerated when rated-speed operation was added to each normal start-stop cycle. This acceleration of crack formation was attributed to localized creep damage and perhaps to embrittlement resulting from overaging. It was demonstrated that leading-edge cracking can be prevented simply by starting the engine gradually.
    Keywords: Aircraft Propulsion and Power
    Type: NASA-MEMO-4-7-59E , E-281
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  • 12
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    Experimental Investigation of a 0.35 Hub-Tip Radius Ratio Transonic Axial Flow Rotor Designed for 40 Pounds per Second per Square Foot with a Design Tip Diffusion Factor of 0.20 (1959)
    In:  CASI
    Details
    Publication Date: 2019-08-16
    Description: In order to determine the effect of a low design diffusion factor on the performance of a transonic axial-flow compressor rotor, a high-specific-flow rotor with a 0.35 hub-tip radius ratio was designed, fabricated and tested. This rotor used a design tip diffusion factor of 0.20 with a design corrected specific weight flow of 40 pounds per second per square foot of frontal area, a total-pressure ratio of 1.27, and an adiabatic efficiency of 0.96. The design, rotor performance, and blade element performance are presented with a discussion on rotor shock losses and a comparison with a similarly designed rotor with a tip diffusion factor of 0.35. At the design corrected tip speed of 1100 feet per second, a peak rotor adiabatic efficiency of 0.88 was attained at a corrected specific weight flow of 39 pounds per second per square foot of frontal area with a mass-averaged total-pressure ratio of 1.27. The blade element tip diffusion factor was 0.281, which is 0.08 higher than the design value of 0.20. Peak efficiencies of 0.95, 0.91, 0.89, and 0.85 were obtained at 70, 80, 90, and 110 percent of design speed, respectively. Comparison of the performance of the rotor reported herein and a similarly designed rotor with increased blade loading indicates that higher blade loading results in a more desirable rotor because of a higher pressure ratio and equivalent efficiency. Computed values of shock losses at the rotor tip section indicate that the losses at peak efficiency are primarily a function of shock losses since the profile losses are only a small percentage of the total loss.
    Keywords: Aircraft Propulsion and Power
    Type: NASA-TM-X-86
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  • 13
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    The anatomy and histology of the reproductive systems of Octopus bimaculoides (1959)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 104 (1959), S. 61-87 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1051040103
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  • 14
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    Masthead (1959)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 104 (1959) 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1051040201
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  • 15
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    Studies on the arterial system of three inbred strains of mice (1959)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 104 (1959), S. 441-478 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1051040304
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  • 16
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    Morphological criteria and their use in showing bufonid phylogeny (1959)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 104 (1959), S. 527-560 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Additional Material: 13 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1051040307
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  • 17
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    Reaction of the golgi apparatus of intestinal epithelial cells of the rat to the ingestion of a neutral fat or fatty acid (1959)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 105 (1959), S. 293-315 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1051050204
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  • 18
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    Masthead (1959)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 105 (1959) 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1051050301
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  • 19
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    The embryological development of the skeletal effects of the luxoid gene in the mouse, including its interactions with the luxate gene (1959)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 104 (1959), S. 89-141 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Additional Material: 20 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1051040104
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  • 20
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    The morphology of the chondrocranium of mastacembelus armatus (Cuv. & Val.) (1959)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 104 (1959), S. 237-267 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
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    URL: http://dx.doi.org/10.1002/jmor.1051040204
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  • 21
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    Addendum (1959)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 104 (1959), S. 525-525 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1051040306
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  • 22
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    An experimental study on the development of regional variation in the plumage pattern of the silver campine fowlThe author is deeply indebted to her husband, Mr. John S. Spurbeck of Johns Hopkins University, for preparing the illustrations with so much care and skill. (1959)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 105 (1959), S. 33-53 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Additional Material: 3 Ill.
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    URL: http://dx.doi.org/10.1002/jmor.1051050103
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  • 23
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    Histogenesis of hair in the mink and its relationship to dermal fetal fat cellsBased on a dissertation submitted February, 1955, to the Faculty of The Graduate Council of The George Washington University in partial fulfillment of the requirements for the degree of Doctor of Philosophy. (1959)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 105 (1959), S. 1-31 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Additional Material: 1 Ill.
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    URL: http://dx.doi.org/10.1002/jmor.1051050102
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  • 24
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    Cranial kinetics of the generalized colubrid snake elaphe obsoleta quadrivittata. I. Descriptive morphology (1959)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 105 (1959), S. 193-239 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
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    URL: http://dx.doi.org/10.1002/jmor.1051050202
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  • 25
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    Cytology of glycogen and lipid storage in the pallium of Crassostrea virginica (Gmelin)This investigation was supported by a grant from the National Science Foundation. (1959)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 105 (1959), S. 367-387 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1051050206
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  • 26
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    Golgi response in intestinal epithelial cells of rats to chyme received from fat-fed donors (1959)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 105 (1959), S. 389-399 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Additional Material: 1 Ill.
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    URL: http://dx.doi.org/10.1002/jmor.1051050207
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  • 27
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    Histochemical studies on the blowfly, Phormia regina (Meigen). I. Distribution of glycogen and lipoid during the larval and pupal stagesPart of a thesis submitted in partial fulfillment of the requirements for a Doctor of Philosophy degree in Biology, Radcliffe Graduate School of Arts and Sciences. (1959)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 105 (1959), S. 427-455 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Additional Material: 1 Tab.
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    URL: http://dx.doi.org/10.1002/jmor.1051050303
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  • 28
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    Inhibitory control of regeneration in nemertean wormsThesis submitted to the Department of Zoology of the University of Illinois in partial fulfillment of the requirements for the degree of Doctor of Philosophy.This work was supported by a National Science Foundation Grant (NSF-G5542) administered by Dr. S. Meryl Rose. (1959)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 105 (1959), S. 569-599 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
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    Masthead (1959)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 105 (1959) 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
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    URL: http://dx.doi.org/10.1002/jmor.1051050201
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    The cytology of tritrichomonas as revealed by the electron microscopeThe contents of this paper were presented at a Round Table Discussion on The Ultrastructure of Protozoa held jointly by the Society of Protozoologists and the American Society of Zoologists at the American Institute for Biological Sciences meeting at Stanford University; Stanford, California, August 26-29, 1957. Supported by a grant (RG-4706 and 5479) from the National Institutes of Health, United States Public Health Service. (1959)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 104 (1959), S. 205-235 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
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    Amphibian oocyte nucleoliThis research was supported in part by the Research Committee of the University of Wisconsin Graduate School from funds supplied by the Wisconsin Alumni Research Foundation, and in part by a research grant, no. 4201, from the National Institutes of Health, Public Health Service. (1959)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 104 (1959), S. 377-414 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Masthead (1959)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 104 (1959) 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Micromelia as a direct effect of insulin  -  evidence from in vitro and in vivo experiments (1959)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 104 (1959), S. 159-179 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
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    The development of the skull of chalcides ocellatus. I. The development of the chondrocranium (1959)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 104 (1959), S. 269-306 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
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    The growth influence of spinal ganglia implanted into the denervated forelimb regenerate of the newt, triturusSupported in part by grants from the American Cancer Society and from the National Institutes of Neurological Diseases and Blindness, Public Health Service. (1959)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 104 (1959), S. 415-439 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
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    Masthead (1959)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 105 (1959) 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
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    The development of the skull of Chalcides ocellatus. II. The fully formed chondrocranium and the osteocranium of a late embryo (1959)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 105 (1959), S. 55-104 
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    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
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    The chemoreceptors and other sense organs on the antennal flagellum of the grasshopper (Orthoptera; acrididae)Supported in part by a grant (RG-5479) from the National Institute of Health, United States Public Health Service. (1959)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 105 (1959), S. 145-191 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
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    The growth stages of the lophophore and loop of the brachiopod Terebratalia transversa (Sowerby) (1959)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 105 (1959), S. 401-426 
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    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Partial destruction and recovery of the liver of chick embryos following injection of aminoguanidine sulfate into the yolkThis investigation was supported by research grant RG-4716C from the National Institutes of Health, Public Health Service.A preliminary report of this investigation was presented at the meetings of the American Society of Zoologists in Washington, D. C. (1959)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 105 (1959), S. 529-567 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
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    Some observations on the esterases of Tetrahymena pyriformis W. II. Some factors affecting aliesterase and cholinesterase activity (1959)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 104 (1959), S. 143-157 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
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    The early embryology of eremitalpa granti (Broom) (1959)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 104 (1959), S. 181-203 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
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    A histological and histochemical study of the kidney tubule of the common garter snake, thamnophis sirtalis, with special reference to the sexual segment in the maleA thesis submitted to the faculty of the Graduate School of Cornell University in partial fulfillment of the requirements for the degree of Master of Arts.Supported in part by a National Science Foundation Grant G-2188. (1959)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 104 (1959), S. 307-357 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
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    The ontogenesis of the sound conducting apparatus of the egyptian toad, bufo regularis reuss, with a review of this apparatus in salientia (1959)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 104 (1959), S. 359-375 
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    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Masthead (1959)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 104 (1959) 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
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    The midgut of aquatic hemipteraThis investigation was carried out partly during the tenure of a National Science Foundation Predoctoral Fellowship and partly under the Ellen C. Sabin Fellowship, awarded by the American Association of University Women. (1959)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 104 (1959), S. 479-525 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
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    The saccular apparatus in the brain of Glycera dibranchiataPortion of a dissertation submitted in partial fulfillment of the requirements for the degree of Master of Science at The Catholic University of America. (1959)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 104 (1959), S. 561-590 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Additional Material: 2 Ill.
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    URL: http://dx.doi.org/10.1002/jmor.1051040308
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    The embryological effects of four late-lethal t-alleles in the mouse, which affect the neural tube and skeletonThis research was carried out under National Science Foundation Grant NSF-G-3214. (1959)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 105 (1959), S. 105-143 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Additional Material: 3 Ill.
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    Cranial kinetics of the generalized colubrid snake elaphe obsoleta quadrivittata. II. Functional morphology (1959)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 105 (1959), S. 241-291 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
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    The development and histology of the chinchilla placentaeSupported in part by a grant-in-aid, RG-3775, from the Public Health Service, and partly by a General Research Grant from the Graduate Council of Oregon State College, and published under the auspices of the Oregon State College Monographs Committee, Research Paper No. 361, Department of Zoology, School of Science. (1959)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 105 (1959), S. 317-365 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Additional Material: 7 Ill.
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    Histochemical studies on the blowfly, Phormia regina (Meigen). II. Distribution of phosphatases, dehydrogenases and cytochrome oxidase during larval and pupal stagesPart of a thesis submitted in partial fulfillment of the requirements for a Doctor of Philosophy degree in Biology, Radcliffe Graduate School of Arts and Sciences. Preparation of the manuscript was largely done under the auspices of Pioneering Research Division, U. S. Army, Quartermaster Research and Engineering Center, Natick, Massachusetts. (1959)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 105 (1959), S. 457-493 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Effects of denervation and amputation upon the initiation of regeneration in regenerates of triturusSupported by grant C-2236 from the National Institutes of Health. (1959)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 105 (1959), S. 495-527 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Additional Material: 11 Ill.
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    Schwefel - Stickstoff - Fluorverbindungen VI. Über Thioisodithiazylfluorid S3N2F2 (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 298 (1959), S. 72-77 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: In addition to the formation of S4N4, greenish-yellow crystal sheets of S3N2F2 are deposited from a mixture containing SN2F2 and SNF at pressures form 600 to 700 mm Hg. S3N2F2 crystallizes in two polymorphic forms; the melting and decomposition points are 85 and 95 - 97° Cm, respectively; solubility in CCl4 at 20°C: 1.5 grs./100 grs. The observed formation of S3N2F2 is discussed in respect to the tendency of stable S—F-bond formation.
    Notes: Aus einem Gemisch von SN2F2 und SNF scheidet sich bei Drucken von 600 bis 700 Torr an der Wand des Reaktionskolbens ein gelber Beschlag ab, während gleichzeitig grüngelbe Kristallblättchen ins Innere des Kolbens wachsen. Bei letzteren handelt es sich um S3N2F2, das in zwei polymorphen Kristallarten auftritt. Fp. 85°C; Zers.-Pkt. 95-97°C. Löslichkeit in CCl4: 1,5 g/100 g bei 20°.Aus dem gelben Wandbeschlag wird durch Dekantieren mit Acetonitril S4N4 erhalten. Die Bildung von S3N2F2 wird diskutiert und festgestellt, daß die Tendenz zur Bildung stabiler S—F-Bindungen als Ursache für die Zersetzung von SN2F2 + SNF angesehen werden kann.
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    Infrarotspektroskopische und röntgenographische Untersuchungen am Quecksilber(II)-äthylendiaminchlorid (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 298 (1959), S. 142-151 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The reaction between 1 mol mercuric chloride and 1 mol ethylenediamine (I) leads in aqueous and in diluted alcoholic solutions to a mixture of mercuric chloride and mercuric ethylenediamine chloride, Hg(NH2CH2CH2NH2)Cl2 (II). It is possible to get the compound (II) in pure state in absolute alcolholic solution. X-ray and infrared investigations give evidence for a chain-structure of (II) with (I) bounded in the trans-form.
    Notes: In wäßrigen und verdünnten alkoholischen Lösungen reagieren 1 Mol Quecksilber(II)-chlorid und 1 Mol Äthylendiamin unter Bildung unlöslicher Produkte, die aus Gemischen von Hg(NH2—CH2—CH2—NH2)Cl2 und HgCl2 bestehen. Wird die Reaktion unter Wasserausschluß in absolutem Alkohol ausgeführt, so entsteht reines Quecksilber(II)-äthylendiaminchlorid, Hg(en)Cl2 (en = Äthylendiamin). Durch die Diskussionen des Debyeogramms und des Infrarotspektrums der Verbindung können Ringstrukturen ausgeschlossen werden; es liegt eine Kettenstruktur mit trans-Stellung der XH2-Gruppen (X = N oder C) der Äthylendiamin-Molekel vor.
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    Darstellung und thermische Zersetzung der Dichlorphosphorsäure H[PO2Cl2] (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 298 (1959), S. 152-163 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Pure crystallizable dichlorophosphoric acid H[PO2Cl2] is prepared by reaction of dichlorophosphoric acid anhydride P2O3Cl4 with the calculated amount of water at temperatures below -30°C.When heated under reduced pressure (12 mm), and hydrogen chloride simultaneously is passed through, the dichlorophosphoric acid splits off water and is therefore again transformed into the dichlorophosphoric acid anhydride P2O3Cl4.Contrary to this the dichlorophosphoric acid decomposes, when heated under atmospheric pressure, mainly by splitting off HCl.
    Notes: Reine, kristallisierbare Dichlorphosphorsäure H[PO2Cl2] läßt sich durch Reaktion von Dichlorphosphorsäureanhydrid P2O3Cl4 mit der berechneten Menge Wasser bei Temperaturen unterhalb -30°C darstellen.Beim Erhitzen unter vermindertem Druck (12 mm) und gleichzeitigem Durchleiten von Chlorwasserstoff spaltet die Dichlorphosphorsäure Wasser ab und geht dadurch wieder in das Dichlorphosphorsäureanhydrid P2O3Cl4 über.Dagegen zersetzt sich die Dichlorphosphorsäure beim Erhitzen unter Atmosphärendruck vorwiegend unter HCl-Abspaltung.
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    Über Phosphornitrilfluoride (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 298 (1959), S. 193-193 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19592980309
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    Über die Einwirkung der Halogenate auf Vanadin(III)-oxyd in wäßriger Lösung (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 298 (1959), S. 194-201 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Vanadium(III)oxide, V2O3, is autocatalytically oxidized to vanadium(V)oxide or vanadates(V) by acid or neutral solutions of alkali metal chlorates, bromates, iodates, and periodates. By perchlorate ions, V2O3 is converted to vanadium(IV) compounds. The influence of pH and buffer systems has been investigated. The velocity of oxidation decreases from periodate, bromate, iodate, chlorate to perchlorate. In alkaline solutions the reaction of iodates is greater than that of bromates.
    Notes: Vanadin(III)-oxyd, V2O3, wird sowohl in saurer als auch ursprünglich neutraler Lösung der Alkalichlorate, -bromate, -jodate und -perjodate zu Vanadin(VI)-oxyd bzw. Vanadat und bei der Einwirkung von Perchlorationen langsam zur Vanadin(IV)-stufe oxydiert. Die Reaktionen verlaufen offenbar autokatalytisch. Die Halogenate wirken auch dann oxydierend, wenn der Einfluß der bei den Reaktionen gebildeten Wasserstoffionen durch Zusatz von Natriumhydrogencarbonat oder Calciumcarbonat zum Reaktionsgemisch aufgehoben wird und sogar unter alkalischen Bedingungen, wenn auch langsamer als in ungepufferten Lösung. Die Halogenate werden allgemein zur Halogenidstufe reduziert mit Ausnahme von Perjodat, das, falls reichlich von ihm vorhanden ist, zu Jodat reduziert wird. Die Oxydationsgeschwindigkeit nimmt in der Reihenfolge: Perjodat 〉 Bromat 〉 Jodat 〉 Chlorat 〉 Perchlorat ab. In alkalischen Lösungen oxydieren die Jodate schneller als die Bromate.
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    Spektroskopische Untersuchungen an Siliciumverbindungen. VIII. Die Schwingungsspektren einiger Tetramethyldisiloxane (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 299 (1959), S. 78-86 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The Raman and infrared spectra of compounds of the type X (CH3)2SiOSi(CH3)2X (X = H, OH, Cl, C6H5 are reported and the frequencies are assigned. The shift of the valence frequencies of the framework is briefly discussed. The approximate valence force constant of the SiOSi bond in HO(CH3)2SiOSi(CH3)2OH is calculated to 4,97 mdyn/Å.
    Notes: Die Raman- und IR-Spektren der Verbindungen X(CH3)2SiOSi(CH3)2X (X = H, OH, Cl und C6H5) werden mitgeteilt und die Frequenzen den einzelnen Schwingungsformen zugeordnet. Der Gang der Valenzfrequenzen des Gerüstes wird kurz diskutiert. Für das Tetramethyldioxydisiloxan wird die angenäherte Valenzkraftkonstante für die Siloxanbindung zu 4,97 mdyn/Å berechnet.
    Additional Material: 4 Ill.
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    Masthead (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 299 (1959) 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19592990301
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    Zur Frage des Reaktionsmechanismus des HCOOH-Zerfalls an Ni-Oberflächen. „Über den Mechanismus des Ameisensäuredampf-Zerfalls am Nickel“ (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 299 (1959), S. 151-152 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: A mechanism of the decomposition of the formic acid on a surface of nickel is proposed.
    Notes: Es wird ein Mechanismus der genannten Reaktion angegeben.
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    Spektroskopische Untersuchungen an Siliciumverbindungen. IX. Über die Bindungsverhältnisse in der Siliciumchemie (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 299 (1959), S. 138-150 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The bonds between silicium and elements of a great electronegativity are customary stronger than single bonds. This is shown by the valence force constants. The valence frequencies of substituted compounds indicate that strong electronegative substituends strengthen adjacent bonds. The mechanism of this strengthening is discussed.
    Notes: Die Valenzkraftkonstanten für Bindungen zwischen Silicium und stark elektronegativen Partnern zeigen, daß diese Bindungen in der Regel stärker als normale Einfachbindungen sind. Die Valenzfrequenzen in gemischt substituierten Verbindungen lassen erkennen, daß stark elektronegative Substituenten benachbarte Bindungen verstärken. Der Mechanismus dieser Bindungsverstärkungen wird diskutiert.
    Additional Material: 18 Tab.
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    Bleiverbindungen mit Apatitstruktur, insbesondere Blei-Jod- und Blei-Brom-Apatite (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 300 (1959), S. 41-50 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The compounds Pb5(XO4)3Z (with X = P, As, V and Z = F, Cl, Br, J) have been prepared and investigated by X-ray analysis. With the exception of Pb5(PO4)3J, all compounds crystallize in apatite structure which is orthorhombically deformed in the case of Pb5(AsO4)3J.
    Notes: Es wird die Synthese von Bleiapatiten der Zusammensetzung Pb5(XO4)3Z [X = P, As, V und Z = F, Cl, Br, J] beschrieben. Röntgenaufnahmen ergeben in allen Fällen außer Pb5(PO4)3J die Apatitstruktur, im Falle des Pb5(AsO4)3J ist sie rhombisch deformiert. Einige Strukturdaten dieser Verbindungen werden mitgeteilt.
    Additional Material: 3 Ill.
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    Zur Kenntnis der Chemie der Metallcarbonyle in flüssigem Ammoniak. IV. Über Neue Substitutionsprodukte des Cr(CO)6 mit aromatischen Aminen (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 300 (1959), S. 51-60 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: By interaction of alkali pentacarbonyl chromates(-II) with aromatic mono-, di-, and triamines at room temperature only pentacarbonyl amine chromium(0) compounds are formed. Wheras m- and p-phenylene diamine are linked with two and 1, 3, 5-triaminobenzene with three Cr(CO)5-groups, o-phenylene diamine forms a corresponding compound with only one Cr(CO)5-group. Unlike ethylene diamine or cyclohexane diamine(1,2) o-phenylene diamine does not give a tetracarbonyl chromium(0) compound.
    Notes: Bei der Umsetzung von Alkali-pentacarbonyl-chromaten(-II) mit wäßrigen Lösungen von aromatischen Mono-, Di- und Triaminen bei gewöhnlicher Temperatur erhält man stets Pentacarbonyl-amin-chrom(0)-verbindungen, die sich als echte Substitutions-produkte des Cr(CO)6 erweisen. Während m- und p-Phenylendiamin zwei und 1,3,5-Triaminobenzol drei Cr(CO)5-Gruppen zu binden vermögen, erhält man im Falle des o-Phenylendiamins eine entsprechende Verbindung mit nur einer Cr(CO)5-Gruppe. Insbesondere entsteht bei letzterem - im Gegensatz zum Äthylendiamin - keine Tetracarbonyl-chrom(0)-verbindung. Eine solche bildet sich hingegen, wenn man an Stelle des o-Phenylendiamins das hydrierte o-Phenylendiamin, also Cyclohexandiamin(1,2), zur Reaktion bringt.
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    Beiträge zur Chemie der Elemente Niob und Tantal. XXI. Präparative Untersuchungen mit niederen Niobchloriden (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 300 (1959), S. 1-32 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The system niobium-chlorine has been investigated.The formation of niobiumtrichloride, with a composition range from NbCl2.67 to NbCl3.1, has been studied by thermal decomposition of niobium tetrachloride, reduction of NbCl5 with hydrogen, and the chemical transport reaction: \documentclass{article}\pagestyle{empty}\begin{document}$${\rm NbcL}_{\rm X} {\rm f + (4 - x)NbCl}_{\rm 5} {\rm g = (5 - x)NbCl}_{\rm 4} {\rm g}$$\end{document}.The thermal and chemical properties of the niobiumtrichloride phase are described.Niobium(II)-chloride which is a stoichiometric compound is formed in the reactions Nb+NbCla2.67, NbSNbCI5, and NbCl5+H. There is no evidence for the existence of niobium (I)-chloride.
    Notes: Das Niobtrichlorid besitzt einen großen Homogenitätsbereich. Die Phasengrenzen liegen bei den Zusammensetzungen NbCl3,1 und NbCl2,67. Diese Grenzzusammensetzungen fallen schon beim thermischen Abbau des Niobtetrachlorids und bei der Reduktion von NbCl5 mit H2 auf. Weiteren Aufschluß geben Experimente, bei denen die Trichloridphase NbClx durch eine chemische Transportreaktion \documentclass{article}\pagestyle{empty}\begin{document}$${\rm NbcL}_{\rm X} {\rm f + (4 - x)NbCl}_{\rm 5} {\rm g = (5 - x)NbCl}_{\rm 4} {\rm g}$$\end{document} als Gleichgewichtsbodenkörper gewonnen wird. Die Zusammensetzung der Trichloridphase hängt in der zu fordernden Weise vom NbCl5-Druck ab. Aus Pulverdiagrammen und aus der Farbe der Trichlorid-Präparate läßt sich ebenfalls die Breite der Trichloridphase und auch die Zusammensetzung eines im homogenen Gebiet liegenden Präparats ableiten.Angaben über das Niobtrichlorid hinsichtlich seines thermischen und chemischen Verhaltens werden zusammengestellt.Niob(II)-chlorid wird aus Nb + NbCl2,67 gewonnen. Auch beim Erhitzen von Nb im NbCl5-Argon-Strom und bei der Reduktion von NbCl5 mit H2 ist die NbCl2-Bildung nachweisbar. NbCl2 besitzt keine erhebliche Phasenbreite. Das chemische und thermische Verhalten des NbCl2 werden studiert.Das metallische Niob löst keine nachweisbaren Cl-Mengen. Ein Niob(I)-chlorid wurde nicht gefunden.Zusammenfassend werden die Phasenverhältnisse im System Niob-Chlor dargestellt und weitere Probleme der Trichloridphase erörtert.Das letzte Kapitel bringt Analysenverfahren.
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    Herstellung und Eigenschaften der Ternären Nitride von Vanadin, Niob und Tantal der Zusammensetzung Li7MeN4 (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 300 (1959), S. 61-71 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The compound Li7VN4 containing vanadium(V) has been prepared by heating Li3N and VN in nitrogen atmosphere to a temperature of 680 °C. Li7VN4 crystallizes in an superstructure of fluorite lattice (space group T4d with a = 9.604 Å).Similarly, the compounds Li7NbN4 and Li7 TaN4 have been synthesized.
    Notes: 1. Durch Erhitzen von Li3N und VN in einer Stickstoffatmosphäre auf 680 °C wurde die Verbindung Li7VN4 hergestellt. Die Oxydationsstufe 5 des Vanadins wurde mit drei verschiedenen Methoden bestimmt. Die ternäre Verbindung ist thermisch beständiger als die zwei binären Nitride. Li7VN4 kristallisiert in einer Überstruktur des Flußspatgitters in der Raumgruppe T4d mit a = 9,604 Å. Ein ternäres Nitrid niedrigerer Oxydationsstufe konnte nicht hergestellt werden.2. Entsprechende Versuche führten zu den Verbindungen Li7NbN4 und Li7TaN4; diese Verbindungen sind chemisch und thermisch etwas stabiler als die Vanadinverbindung.
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    Über Halogenide des dreiwertigen Titans (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 299 (1959), S. 213-226 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: A technical alteration of the TiCl3-preparation according to SHERFEY is described.The phase diagrams of the systems NaCl/TiCl3, KCl/TiCl3 and KBr/TiBr3 were investigated by thermal analysis. There exist the compounds: Na3TiCl6 (incongruent m. p. = 553° C), K3TiCl6 (m. p. = 783° C), K2TiCl5 (incongruent m. p. = 605° C), K3TiBr6 (m. p. = 662° C). The results were confirmed by microscopic and X-rax methods.In the NaCl- and KCl-rich melts exists the complex [TiCl6]3- probably.
    Notes: Eine technische Abänderung der TiCl3-Darstellung nach SHERFEY wird mitgeteilt.Die Untersuchung der Systeme NaCl/TiCl3, KCl/TiCl3 und KBr/TiBr3 mit Hilfe der Differential-Thermoanalyse ergab folgendes: Im System NaCl/TiCl3 existiert die Verbindung Na3TiCl6. Sie schmilzt inkongruent bei 553° C. Das Zustandsdiagramm KCl/TiCl3 zeigt die Verbindungen K3TiCl6 (Schmp. = 783° C) und K2TiCl5 an, wobei die letztere bei 605° C inkongruent schmilzt. Im System KBr/TiBr3 tritt die bei 662° C kongruent schmelzende Verbindung K3TiBr6 auf.Das Ergebnis der thermischen Analyse wird durch mikroskopische und röntgenographische Untersuchungen gesichert.Die Berechnung der Liquiduskurve auf der NaCl- bzw. KCl-reichen Seite der Zustandsdiagramme legt nahe, die Existenz von [TiCl6]3--Ionen in der Schmelze anzunehmen.
    Additional Material: 7 Ill.
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    Masthead (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 299 (1959) 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19592990501
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    Zur Kenntnis des Verhaltens von Nichtmetallchalkogeniden gegenüber flüssigem Ammoniak. III. Das Verhalten von Tetraphosphor-heptasulfid gegenüber flüssigem Ammoniak (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 299 (1959), S. 241-251 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Tetraphosphorus-heptasulfide, P4S7, undergoes disproportionation in liquid ammonia at a temperature of -33° C according to the equation mentioned in „Inhaltsübersicht“.Tetraphosphorus-heptasulfide, P4S7, undergoes disproportionation in liquid ammonia at a temperature of -33° C according to the equation mentioned in „Inhalts-übersicht“.From the reaction products, the properties of which are described there is evidence for the structure of P4S7, determined by X-ray diffraction(4). The trimer orange-coloured [P3S3(NH)4]4-anion is supposed to have a cyclic structure.The thermal decomposition of (NH4)3[PS4] and (NH4)2[PS3NH2], yielding P4N5, is discussed.
    Notes: Während die beiden niederen Phosphorsulfide(2) P4S3 und P4S5 mit flüssigem Ammoniak bei -33° unter Bildung von Ammoniumverbindungen mit vier P-atomen in der Molekel reagieren und P4S10(3) einfach gebaute Thiophosphate bildet, unterliegt Tetraphosphor-heptasulfid in diesem Medium gemäß 2P4S7 + 17 NH3 → (NH4)3[PS4] + 2 (NH4)2[PS3NH2] + (NH4)3[P3S3(NH)3] + NH4[P2SN] der Disproportionierung.Der obige Reaktionsverlauf läßt sich einerseits durch quantitative Erfassung der sich in ihrer Löslichkeit unterscheidenden Thiophosphate (NH4)3[PS4] und (NH4)2[PS3NH2], andererseits durch Isolierung der Verbindung [P3S3(NH)3], in der der Phosphor die Oxydationszahl +III einnimmt, nachweisen. Die experimentellen Ergebnisse lassen sich aus der für das P4S7 röntgenographisch nachgewiesenen Struktur(4) ableiten.Die Eigenschaften der erhaltenen Verbindungen werden beschrieben und die Ergebnisse des thermischen Abbaus von (NH4)3[PS4] und (NH4)2[PS3NH2], der in beiden Fällen schließlich zu P3N5 führt, diskutiert.Dem trimeren orangefarbenen Thio-imidophosphit-anion [P3S3(NH)3]3- wird ringförmige Struktur zugeschrieben.
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    Magnetochemische Untersuchungen im System FeO1 + x · MgO (O 〈x〈 0,5) (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 299 (1959), S. 271-280 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The magnetic susceptibility of FeO1+x · 0,925 MgO (0 〈 x 〈 0,5) at 700, 750, 800, 850 and 900° C has been measured. The results are compared with values calculated under certain conditions and with the magnetic susceptibility of the system Fe—O, received in previous investigations.The isotherms of the susceptibility of magnesiowüstite (FeO1+y · 0,925 MgO) and wüstite (FeO1+y) allow to make some conclusions of the structure of the magnesiowüstite phase. It seems very probable that the ions Fe3+ both in magnesiowüstite and in wüstite occur in the form of accumulations. This „submicroheterogenity“ does not mean that magnesiowüstite from the point of view of thermodynamics consists of two solid phases.The homogeneity range of magnesiowüstite phase spreads at 700° C from FeO1,04 · 0,925 MgO to FeO1,09 · 0,925 MgO and at 900° C about FeO1,015 · 0,925 MgO to about FeO1,11 · 0,925 MgO.
    Notes: Im System FeO1+x · 0,925 MgO (0 〈 x 〈 0,5) wurde für 15 Präparate die magnetische Suszeptibilität bei 700°, 750°, 800°, 850° und 900°C gemessen. Die Ergebnisse werden mit den unter bestimmten Voraussetzungen berechneten Suszeptibilitäten und mit den für das System Fe—O früher erhaltenen experimentellen Werten verglichen. Aus dem Verlauf der Suszeptibilitätsisothermen in den Homogenitätsbereichen der „Magnesiowüstit“-Phase (feste Lösungen von FeO1+y und 0,925 MgO) und der Wüstitphase (FeO1+y) konnten gewisse Schlüsse in bezug auf die Struktur der „Magnesiowüstit“-Phase gezogen werden. Es ist wahrscheinlich, daß die Fe3+-Ionen im Magnesiowüstit, ähnlich wie im Wüstit, in Form von Ansammlungen vorhanden sind. Diese „Submikroinhomogenität“ bedeutet nicht, daß Magnesiowüstit im thermodynamischen Sinne aus zwei festen Phasen besteht.Der Homogenitätsbereich der Magnesiowüstitphase erstreckt sich bei 700° C von FeO1,04 · 0,925 MgO bis FeO1,09 ·0,925 MgO und bei 900° C von FeO1,015 · 0,925 MgO bis ungefähr FeO1,11 · 0,925 MgO.Das Curie-Weiss-Gesetz wird von den im Homogenitätsbereich der Magnesiowüstitphase liegenden Präparaten befolgt.Die Abhängigkeit der magnetischen Suszeptibilität von der Zusammensetzung bei höheren Sauerstoffgehalten (x 〉 1,1) ist infolge des Auftretens zweier fester Phasen veränderlicher Zusammensetzung kompliziert.
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    Schwermetallkomplexe mit Thiopicolinsäure-anilidBald nach dem Einreichen des Manuskriptes der vorliegenden Arbeit erschien über den gleichen Gegenstand eine Veröffentlichung von F. Lions u. K. F. Martin, J. Amer. chem. Soc. 80, 1591 (1958). Auf die Ergebnisse der australischen Autoren wollen wir in unserer zweiten diesbezüglichen Publikation eingehen. (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 299 (1959), S. 281-291 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Thiopicolinic acid anilide reacts with ions of heavy metals to form inner complex salts. Complexes of 12 metals have been prepared. The coordination compound with Fe(II)-ions is deep violet.
    Notes: Thiopicolinsäure-anilid fungiert gegenüber Schwermetallionen, besonders azo- und chalkophilen, als Innerkomplexligand wie als Neutralligand(1). Das Anilid wird als Anion der tautomeren Iminothiol-Form von dem betreffenden Metallion innerkomplex koordiniert, wobei je nach Ladungs- und charakteristischer Koordinationszahl des Zentrums entweder ladungslose oder Acido-Innerkomplexe entstehen. Analytisch definierte Komplexe wurden von 12 verschiedenen Metallen gewonnen, wobei die sehr intensive Violettfarbe der Eisen(II)-komplexe hervorzuheben ist.
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    Ultrarotspektren von Tellursäuren, Telluraten und Antimonaten (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 301 (1959), S. 161-170 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The infrared spectra of some telluric acids, tellurates and antimonates are measured. The constitution of these compounds is discussed.
    Notes: Es werden die Ultrarotspektren der Verbindungen H6TeO6, (H2TeO4)x, Na2H4TeO6, K2H4TeO6 · 3 H2O, Na[Sb(OH)6], KSbO3 · 2,2 H2O, Na2HSb3O9 · 4 H2O, K2HSb3O9 · 5 H2O, NaSbO3 und KSbO3 im Bereich 400-4000 cm-1 angegeben und ausgedeutet. Die Konstitution dieser Verbindungen wird diskutiert.
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    Die Schwingungsspektren von verschiedenen Cyanaten des Siliciums (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 300 (1959), S. 194-204 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: From infrared spectra in the NaCl-region and Raman spectras of several cyanates of silicon (see „Inhaltsübersicht°“), the isocyanate structure for all these compounds has been demonstrated. There is a small multiple bond character of Si-N-bonds.
    Notes: Es wurden die Infrarot-Spektren im NaCl-Bereich und die Raman-Spektren von (CH3)3Si(NCO), (CH3)2Si(NCO)2, CH3Si(NCO)4, Si(NCO)4 und Si2O(NCO)6 aufgenommen und eine Zuordnung zu den Grundschwingungen dieser Molekel vorgenommen. Für alle Verbindungen konnte die Isocyanatstruktur spektroskopisch nachgewiesen werden, auch für die in der Literatur mit normaler Cyanatstruktur beschriebene Verbindung. Bei dieser handelt es sich um ein Gemisch von Si(NCO)4 + Si2O(NCO)6. Weiterhin ergab sich aus den Spektren der Isocyanate, daß die Si-N-Bindungen einen geringen Mehrfachbindungsanteil haben.
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    Farbe und Konstitution bei anorganischen Feststoffen. II. Die Lichtabsorption des zweiwertigen Nickels in oxydischen Koordinationsgittern (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 300 (1959), S. 159-174 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The influence of coordination number, lattice expansion, and decreasing degree of symmetry or distortion of the coordination polyhedron on the light absorption of Ni2+-ions in various oxides (see „Inhaltsübersicht°“) have been studied by spectrophotometric determination of powder remission.As in the case of Co(II)-containing oxides, the main absorption band is shifted toward the UV-region by raising the coordination number from 4 to 6. Displacement toward the red sometimes occurs on lattice expansion.Stronger shiftings to the red and high intensities of absorption have been observed when the decrease of point symmetry of coordination polyhedron is accompanied by stronger distortion.The ranges of homogeneity in the system Zn2SiO4/Ni2SiO4 have been determined spectrometrically.
    Notes: Durch spektralphotometrische Bestimmung der Remission von Pulvern wurde die Abhängigkeit der Lichtabsorption des Ni2+ von folgenden Faktoren untersucht: 1. Koordinationszahl (Ni0,1Mg0,9Al2O4, KZ = 4, Ni0,1Mg0,9O, KZ = 6) 2. Gitterdehung (Ni0,1Mg0,9Al2O4 → Ni0,1Mg0,9Ga2O4), (Ni0,1Mg0,9O → Ni0,01Mg0,69Zn0,3O), (Ni0,1Mg0,9TiO3 → Ni0,1Cd0,9TiO3) 3. Symmetrieerniedrigung bzw. Verzerrung des Koordinationspolyeders (Ni0,1Zn1,9SiO4, Ni0,01Zn0,99O), (Ni0,25Mg1.75SiO4, Ni0,1Mg0,9TiO3). Wie im Fall des Co2+ bewirkt hier die Erhöhung der Koordinationszahl von 4 auf 6 bei einer Eigensymmetrie des Koordinationspolyeders Td bzw. Oh eine UV-Verschiebung der Hauptabsorptionsbanden. Eine Gitterdehnung kann, insbesondere bei einfachen Gittern, eine Rotverschiebung bewirken. Eine Erniedrigung der Punktsymmetrie des Koordinationspolyeders hat nur dann eine stärkere Rotverschiebung und Erhöhung der Absorptionsintensität zur Folge, wenn damit gleichzeitig eine stärkere Verzerrung des Koordinationsoktaeders verbunden ist. Das System Zn2SiO4/Ni2SiO4 wurde spektralphotometrisch untersucht und die Grenzen der Homogenitätsgebiete aus dem Vergleich der Spektren ermittelt.
    Additional Material: 14 Ill.
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    Über Schwermetallamide. IX. Hydroxokobalt(III)-amide (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 300 (1959), S. 175-193 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Two isomeric hydroxy-cobalt(III)-amides, I and II, of the composition [Co(NH2)2OH]n have been prepared by interaction of KNH2 with [Co(NH3)5OH](NO3)2 and [Co2(NH3)8(OH)2]X4 (X = NO3- or SCN-), respectively, in liquid ammonia. The reactions of the amorphous amides, the structures of which are discussed, with a surplus of KNH2 and NH4NO3 in liquid ammonia and the thermal decomposition of II have been studied.The reaction between [Co(NH3)6](NO3)3 and KNH2 yields {[Co2(NH2)5NH3]n(NO3)n}.
    Notes: Durch Umsetzung von [Co(NH3)5(OH)](NO3)2 (I) und [Co2(OH)2(NH3)8]X4 (II) (X = NO3 oder SCN) mit KNH2 in flüssigem NH3 wurden zwei strukturisomere Mono-hydroxokobalt(III)-amide {Co(NH2)2OH}n (III bzw. IV) als unlösliche, amorphe Niederschläge erhalten. Das aus II gewonnene m̈-Monohydroxokobalt-(III)-amid (IV) besitzt noch die Di-m̈-hydroxogruppierung, sofern die Fällung bei tiefen Temperaturen (-20° C) erfolgt. Beide Verbindungen III und IV sind als Derivate des Kobalt(III)-amids zu betrachten und sind wie dieses mehr oder weniger hochpolymer. Unter Berücksichtigung des Strukturprinzips ist III als poly-m̈-Hydroxo-di-m̈-amino-kobalt(III) und IV als poly-[Di-m̈-hydroxo-m̈-amino-kobalt-tri-m̈-amino-kobalt(III)] zu bezeichnen. Der aus I resultierende Bodenkörper (III) reagiert mit NH4NO3 in flüssigem NH3 unter additiver Salzbildung zu {[Co2(OH)2NH2(NH3) 6]n(NO3)3n} (V), einem amorphen Nitrat, mit polymerem Kation, das noch alle OH-Gruppen enthält. IV reagiert ebenfalls mit NH4NO3 unter additiver Salzbildung, jedoch unter Eliminierung der Hälfte aller OH-Gruppen zu {[Co2(OH)(NH2)2(NH3)6]n(NO3)3n} (VIII). Mit KNH2 erfolgt ein Austausch von OH gegen NH2 sowohl in III als auch in IV unter Bildung von KOH. Bei der Reaktion von II mit KNH2 konnte ein definiertes Zwischenprodukt {[Co2(OH)2(NH2)3(NH3)2]n(NO3)n} (VI) gefaßt werden. Ein analoges; um 1 NH3 ärmeres Zwischenprodukt {[Co2(NH2)5(NH3)]n(NO3)n} (VII) - die OH-Gruppen sind durch NH2 ersetzt - entsteht auch bei der Reaktion von [Co(NH3)6](NO3)3 mit KNH2 in flüssigem NH3. Der thermische Abbau von IV führt unter NH3- und N2-Abspaltung schließlich zu CoO. Eine Wasserabspaltung wurde hierbei nicht beobachtet.
    Additional Material: 3 Ill.
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    Über ein Siliciumphosphid Si2P (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 300 (1959), S. 205-209 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The compound Si2P is formed at 450 °C from SiH4 and PH3, if the starting gas mixtures are containing SiH4 and PH3 in the ratio of 1 : 1 or 1 : 2. Si2P is a blue black non-crystalline substance. At 600 °C Si2P decomposes into Si and SiP as recognized from X-ray diagrams and IR-spectra. SiP formed from Si2P is identical with that prepared by Biltz1) from its elements.
    Notes: Aus SiH4 und PH3 bildet sich um 450 °C die Verbindung Si2P, wenn man von Gasmischungen SiH4:PH3 = 1 : 1 oder 1 : 2 ausgeht. Si2P ist ein blauschwarzes, röntgenamorphes Produkt. Um 600 °C zerfällt es in Si und SiP, wie aus den Röntgendiagrammen und den IR-Aufnahmen zu erkennen ist. Das aus dem Si2P entstehende SiP ist mit dem von Biltz1) aus den Elementen dargestellten SiP identisch.
    Additional Material: 3 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19593000310
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    Masthead (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 300 (1959) 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19593000501
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    Spektroskopische Untersuchungen an Siliciumverbindungen. X. Schwingungsspektren und Struktur des Tetramethyl-cyclo-disilthians und des Hexamethyl-cyclo-trisilthians (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 300 (1959), S. 210-220 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The Raman and infrared spectra of [(CH3)2SiS]2 and [(CH3)2SiS]3 are reported and the frequencies are assigned as far as possible. [(CH3)2SiS]2 has the symmetrie D2h with a planar ring. The ring of [(CH3)2SiS]3 is puckered. The most probable symmetrie is here Cs (cis structure). The correlation of the SiXSi angle and the ring structure of siloxanes, silazanes and silthianes is discussed.
    Notes: Die Raman- und IR-Spektren des [(CH3)2SiS]2 und [(CH3)2SiS]3 werden mitgeteilt und die Frequenzen soweit wie möglich den einzelnen Schwingungsformen zugeordnet. Für das [(CH3)2SiS]2 ergibt sich eine ebene Ringstruktur nach D2h. Der Ring des [(CH3)2SiS]3 ist gewellt und hat höchstwahrscheinlich Cis-(Wannen-)Struktur, Punktgruppe Cs. Der Zusammenhang zwischen SiXSi-Winkel und Ringstruktur der Siloxane, Silazane und Silthiane wird diskutiert.
    Additional Material: 2 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19593000311
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    Das Verhalten von Amidophosphaten beim Erhitzen (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 300 (1959), S. 221-224 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Mixtures of amides of imidophosphoric acids with the composition PnOn(NH)n-1 · (NH2)n+2 are formed from OP(NH2)3 by heating at 100° C. - NaPO2)2 respectively Na2PO3NH2 looses all nitrogen by heating in the air at 900° resp. 1000° C and forms glassy (NaPO3)x resp. Na4P2O7.
    Notes: Amidophosphate werden beim Erhitzen infolge intermolekularer Abspaltung von Ammoniak zu Imidopolyphosphaten kondensiert. Aus Phosphoroxytriamid entstehen bei etwa 100° Gemische von Imidophosphorsäureamiden der Formel PnOn(NH)n-1(NH2)n+2 mit n = 2…5. Naturiumdiamidophosphat bzw. Natriummonoamidophosphat geben beim Erhitzen an der Luft auf 900° bzw. 1000° den gesamten Stickstoff ab und gehen in glasiges Natriumpolyphosphat (NaPO3)x bzw. Natriumdiphosphat über.
    Additional Material: 1 Tab.
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    URL: http://dx.doi.org/10.1002/zaac.19593000312
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    Eine Abgekürzte Schreibweise für Phosphorsäuren niederer Oxydationszahl Vorbemerkung zu den folgenden Mitteilungen (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 300 (1959), S. 225-228 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: An abbreviated nomenclature is proposed for acids of phosphorus with lower oxydation number.
    Notes: Es wird eine abgekürzte Bezeichnungsweise für Phosphorsäuren niederer Oxydationszahl vorgeschlagen.
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    URL: http://dx.doi.org/10.1002/zaac.19593000502
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    Über Phosphorsäuren niederer Oxydationszahl. II. Über die \documentclass{article}\pagestyle{empty}\begin{document}${\rm (- P -)}_{\rm 6}$\end{document}-Ringsäure (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 300 (1959), S. 237-249 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Red phosphorus suspended in alkali hydroxyde solutions reacts with hypohalogenites under formation of salts of an acid \documentclass{article}\pagestyle{empty}\begin{document}${\rm (- P -)}_{\rm 6}$\end{document}. The oxidation number of phosphorus in this compound is 3+. The phosphorus atoms are linked together by P - P bonds. The compound has a ring structure.
    Notes: In Alkalihydroxydlösungen suspendierter roter Phosphor reagiert mit Hypohalogeniten unter Bildung von Salzen einer \documentclass{article}\pagestyle{empty}\begin{document}${\rm (- P -)}_{\rm 6}$\end{document}-Ringsäure. Die Oxydationszahl des Phosphors in der Verbindung ist 3+; die Phosphoratome sind über P - P-Bindungen miteinander verknüpft. Die Verbindung hat Ringstruktur.
    Additional Material: 1 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19593000504
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    Über Phosphorsäuren niederer Oxydationszahl. III. Über die \documentclass{article}\pagestyle{empty}\begin{document}$\mathop {\rm P}\limits^{\rm 4} {\rm - }\mathop {\rm P}\limits^{\rm 3} {\rm - }\mathop {\rm P}\limits^{\rm 4}$\end{document}Säure (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 300 (1959), S. 250-260 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The preparation of salts of an acid of phosphorus in which 3 phosphorus atoms are linked together in a straight chain is described. The acid is prepared from oxidates of the acid \documentclass{article}\pagestyle{empty}\begin{document}${\rm (} - \mathop {\rm P}\limits^{\rm 3} -)_6$\end{document}, from oxidates of red phosphorus and from hydrolyzates of phosphorus tribromide.
    Notes: Die Herstellung von Salzen einer Säure des Phosphors, in der 3 Phosphor-Atome linear miteinander verbunden sind, aus Oxydaten der \documentclass{article}\pagestyle{empty}\begin{document}${\rm (} - \mathop {\rm P}\limits^{\rm 3} -)_6$\end{document}-Ringsäure, aus Oxydaten des roten Phosphors und aus Hydrolysaten des Phosphortribromids wird beschrieben.
    Additional Material: 3 Ill.
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    Über Phosphorsäuren niederer Oxydationszahl. I. Über Oxydation und Hydrolyse der \documentclass{article}\pagestyle{empty}\begin{document}$\mathop {\rm P}\limits^{\rm 2} {\rm - }\mathop {\rm P}\limits^{\rm 4}$\end{document}-Säure und der \documentclass{article}\pagestyle{empty}\begin{document}$\mathop {\rm P}\limits^{\rm 4} {\rm - }\mathop {\rm P}\limits^{\rm 4}$\end{document}-Säure (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 300 (1959), S. 229-236 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The \documentclass{article}\pagestyle{empty}\begin{document}$\mathop {\rm P}\limits^{\rm 4} {\rm - }\mathop {\rm P}\limits^{\rm 4}$\end{document}-acid is stable even towards 80% alkali hydroxide at 200°C. It is transformed to orthophosphate in molten anhydrous alkali hydroxide. The \documentclass{article}\pagestyle{empty}\begin{document}$\mathop {\rm P}\limits^{\rm 2} {\rm - }\mathop {\rm P}\limits^{\rm 4}$\end{document}-acid is also very stable towards alkali hydroxide. Under rigorous conditions it is oxidized to \documentclass{article}\pagestyle{empty}\begin{document}$\mathop {\rm P}\limits^{\rm 4} {\rm - }\mathop {\rm P}\limits^{\rm 4}$\end{document}-acid with yields up to 85% of theory under formation of hydrogen. High yields of \documentclass{article}\pagestyle{empty}\begin{document}$\mathop {\rm P}\limits^{\rm 4} {\rm - }\mathop {\rm P}\limits^{\rm 4}$\end{document}-acid can also be obtained by reacting iodine with \documentclass{article}\pagestyle{empty}\begin{document}$\mathop {\rm P}\limits^{\rm 2} {\rm - }\mathop {\rm P}\limits^{\rm 4}$\end{document}-acid in mineral acid solution. Copper catalyzed oxidation of \documentclass{article}\pagestyle{empty}\begin{document}$\mathop {\rm P}\limits^{\rm 4} {\rm - }\mathop {\rm P}\limits^{\rm 4}$\end{document}-acid by hypobromite in alkaline solution leads to mixtures of ortho- and pyrophosphate.
    Notes: Die \documentclass{article}\pagestyle{empty}\begin{document}$\mathop {\rm P}\limits^{\rm 4} {\rm - }\mathop {\rm P}\limits^{\rm 4}$\end{document}-Säure ist sogar gegen 80proz. Alkalihydroxyd bei 200°C beständig, erst schmelzendes wasserfreies Alkalihydroxyd verwandelt zu Orthophosphat. Auch die \documentclass{article}\pagestyle{empty}\begin{document}$\mathop {\rm P}\limits^{\rm 2} {\rm - }\mathop {\rm P}\limits^{\rm 4}$\end{document}-Säure ist gegen Alkalihydroxyd sehr beständig; bei verschärften Bedingungen wird sie mit Ausbeuten bis zu 85% unter Wasserstoffentwicklung zur \documentclass{article}\pagestyle{empty}\begin{document}$\mathop {\rm P}\limits^{\rm 4} {\rm - }\mathop {\rm P}\limits^{\rm 4}$\end{document}-Säure oxydiert. Auch bei der Einwirkung von Jod auf die \documentclass{article}\pagestyle{empty}\begin{document}$\mathop {\rm P}\limits^{\rm 2} {\rm - }\mathop {\rm P}\limits^{\rm 4}$\end{document}-Säure in mineralsaurer Lösung können hohe Ausbeuten der \documentclass{article}\pagestyle{empty}\begin{document}$\mathop {\rm P}\limits^{\rm 4} {\rm - }\mathop {\rm P}\limits^{\rm 4}$\end{document}-Säure erhalten werden. Die durch Kupfer katalysierte Oxydation der \documentclass{article}\pagestyle{empty}\begin{document}$\mathop {\rm P}\limits^{\rm 4} {\rm - }\mathop {\rm P}\limits^{\rm 4}$\end{document}-Säure in alkalischer Lösung durch Hypobromit führt zu Gemischen von Ortho- und Pyrophosphat.
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    Über Peroxyantimonate (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 301 (1959), S. 316-322 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Solutions of antimonates give with H2O2 peroxy-antimonates. These are amorphous, polymeric, insoluble substances. The approximate composition of some of these compounds is KSbO4 · 1,7 H2O, NaSbO4 · 2 H2O, KSbO4 · 1,8 H2O2 and K2HSb3O12 · 3,5 H2O. The constitution of the peroxy-antimonates is discussed with help of their infrared spectra.
    Notes: Aus Lösungen von Kaliumantimonat entstehen mit H2O2 Peroxyantimonate. Diese sind amorphe, schwer lösliche, polymere Substanzen. Isoliert wurden unter anderem Verbindungen der annähernden Zusammensetzung KSbO4 · 1,7 H2O NaSbO4 · 2 H2O, KSbO4 v 1,8 H2O2 und K2HSb3O12 · 3,5 H2O. Die Konstitution der Peroxyantimonate wird an Hand ihrer Ultrarotspektren diskutiert.
    Additional Material: 1 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19593010514
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    Über die Hydroxylgruppen an der Oberfläche des Amorphen Siliciumdioxyds „Aerosil“ und ihre Reaktionen (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 301 (1959), S. 326-335 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reactions of surface hydroxyl groups have been investigated with finely divided amorphous silica (Aerosil). The hydroxyl groups react with calcium hydroxide; esters are formed by reaction with alcohols and diazomethane. Heating with thionyl chloride leads to substitution by chlorine. This reaction is especially suited for the quantitative determination of hydroxyl groups bound to silica surfaces.With lithium phenyl, chlorine bonded to surface silicon atoms can be substituted by phenyl groups.Quantitative determinations show that for Aerosil the number of surface hydroxyl groups is lower than the maximum amount estimated for silica surfaces; their surface concentration varied for different batches.
    Notes: An Aerosil, einem feinteiligen amorphen Siliciumdioxyd-Präparat der Degussa, wurden Umsetzungen mit den an der Oberfläche gebundenen Hydroxylgruppen durchgeführt. Die Hydroxylgruppen reagieren mit Calciumhydroxyd; mit Alkoholen und mit Diazomethan lassen sie sich verestern. Bei der Einwirkung von Thionylchlorid werden sie durch Chlor ersetzt. Diese Reaktion ist zur quantitativen Bestimmung der an Siliciumdioxyd-Oberflächen gebundenen Hydroxylgruppen besonders gut geeignet.Bei der Umsetzung mit Lithiumphenyl wird das am Silicium gebundene Chlor seinerseits durch Phenylgruppen ersetzt.Die quantitative Verfolgung der Reaktionen ergab, daß das Aerosil nicht die maximal mögliche Zahl oberflächenständiger Hydroxylgruppen besitzt. Ihre Menge pro Flächeneinheit ist vom jeweils gelieferten Muster abhängig.
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    URL: http://dx.doi.org/10.1002/zaac.19593010516
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    Bariumfluoroborat (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 301 (1959), S. 336-338 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Pure anhydrous Ba(BF4)2 has been prepared by interaction between BaF2 and BF3 · 2 H2O and purification of the crude reaction product by means of acetone.The solubilities of Ba(BF4)2 in H2O, acetone, methanol, and ethanol have been determined.
    Notes: Das reine wasserfreie Ba(BF4)2 wird durch Umsetzung von BaF2 mit BF3 · 2 H2O und Behandlung des entstandenen Rohsalzes mit Aceton gewonnen.Die Löslichkeit von Ba(BF4)2 in Wasser, Aceton, Methanol und Äthanol wird bestimmt.
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    URL: http://dx.doi.org/10.1002/zaac.19593010517
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    Über die Hydrolyse des Antimon(V)-säureäthylesters (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 301 (1959), S. 339-342 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Sb(OC2H5)5 is hydrolized on action with ½ mol of water yielding the dimeric ester (C2H5O)4Sb—O—Sb(OC2H5)4. By larger quantities of water polymeric chains and net works are formed.
    Notes: Durch Hydrolyse von Sb(OC2H5)5 mit einem halben Mol Wasser entsteht die kondensierte Verbindung (C2H5O)4SbOSb(OC2H5)4. Größere Mengen an Wasser führen zu ketten förmigen und vernetzten Produkten.
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    URL: http://dx.doi.org/10.1002/zaac.19593010518
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    Reaktionen und Gleichgewichte in Alkalihydroxydschmelzen. III. Peroxydgleichgewichte (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 298 (1959), S. 285-301 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The formation of alkali peroxides by reaction between molten alkali hydroxides and oxygen in the presence of water vapor at temperatures of 410 and 510°C has been investigated. Maximum yields of peroxides obtained in dry pure oxygen at 410°C are to be seen in „Inhaltsübersicht“.At definite low pressures of water vapor reproducible peroxide yields have been observed. From the dependence of equilibrium values from oxygen and water vapor pressures there is evidence that in molten NaOH mainly Na2O2 is formed, whereas in KOH, RbOH and CsOh the hyperoxides KO2, RbO2, and CsO2, respectively are the main reaction products.
    Notes: Es wurde das zur Bildung von Alkaliperoxyden führende Gleichgewicht zwischen Alkalihydroxydschmelzen und Sauerstoff in Gegenwart von Wasserdampf bei 410° und 510°C näher untersucht. In trockenem, reinem Sauerstoff wurden bei 410°C maximal folgende Mengen Peroxyd gebildet:.Während es sich bei diesen Zahlen um die in trockenem Sauerstoff, also bei undefiniertem Wasserdampfpartialdruck praktisch erreichbaren Höchstwerte handelt, stellen sich bei geringen Wasserdampfpartialdrucken gut reproduzierbare Gleichgewichte im Laufe von 6 - 15 Stunden ein. Identische Gleichgewichtswerte konnten auch von der anderen Seite her, ausgehend von KO2 erhalten werden.Die Abhängigkeit der Gleichgewichtswerte vom Sauerstoffpartialdruck und Wasserdampfpartialdruck wird an Hand logarithmischer Diagramme diskutiert. Man gelangt dabei zu dem Schluß, daß die NaOH-Schmelzen das Peroxyd Na2O2 gelöst enthalten, während bei den KOH-, RbOH- und CsOH-Schmelzen die Hyperoxyde KO2, RbO2 und CsO2 überwiegen.
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    URL: http://dx.doi.org/10.1002/zaac.19592980508
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    Zur Chemie der kondensierten Phosphate und Arsenate. XXII. Die Bedeutung der Kationen bei der Papierchromatographie der kondensierten Phosphate (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 298 (1959), S. 316-336 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: In paper chromatography of condensed phosphates in acid medium the presence of little quantities of ammonia is necessary. For the explanation of this fact, which was not previously understood, it has been shown that ammonia can be replaced by other monovalent cations. The dependence of chromatographic separation on the cation type and cation concentration has been, therefore, investigated. Furthermore, it has been demonstrated that cations migrate independent of the phosphate anions. However, the presence of cations is necessary in order to differentiate between the solubilities of condensed phosphates by virtue of their molecular weight and their constitution.
    Notes: Bei der Papierchromatographie kondensierter Phosphate in saurem Medium erwies sich die Anwesenheit kleiner Mengen von Ammoniak als notwendig. Zur Aufklärung dieser bisher unverstandenen Tatsache wird gezeigt, daß das Ammoniak durch andere einwertige Kationen ersetzt werden kann, die Trennwirkung in Abhängigkeit von Kationenart und -menge untersucht und außerdem nachgewiesen, daß die Kationen unabhängig von den Phosphatanionen wandern. Die Gegenwart der Kationen ist aber notwendig, um die Löslichkeit der kondensierten Phosphate in Abhängigkeit von ihrem Molekulargewicht und ihrer Konstitution zu differenzieren.
    Additional Material: 18 Ill.
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    Professor Dr. phil. Otto Schmitz-DuMont (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 299 (1959), S. 1-2 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19592990102
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    Studies on the composition and properties of metal ferrocyanogen complexes. II. Physico-chemical studies on the Nature and Composition of Chromous Ferrocyanide (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 301 (1959), S. 350-354 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Die Rektion zwischen CrCl2 und K4Fe(CN)6 ist mittels potentiometrischer, konduktometrischer und amperometrischer Titrationen untersucht worden. Mit den ersten beiden Methoden wurde die Bildung von K2CrFe(CN)6 und Cr2Fe(CN)6 nachgewiesen; die amperometrische Titration gab nur Hinweise für die Existenz der ersteren Verbindung. Durch die Adsorptionsfähigkeit der Verbindungen entstehen Fehler, die in Gegenwart von Alkohol geringer sind als in rein wäßrigem Medium.
    Notes: Potentiometric, conductometric and amperometric titrations have been carried out between CrCl2 and K4Fe(CN)6 with varying concentrations of the reagents in aqueous and aqeous-alcoholic media. While evidence for the formation of both K2CrFe(CN)6 and Cr2Fe(CN)6 was obtained from the first two methods, the amperometric titrations gave evidence only for the formation of K2CrFe(CN)6. From the discrepancies in the titre values (theoretical and determined), evidence for the role of adsorption in influencing the composition is obtained. The titre values approach the theoretical when measurements are done in presence of alcohol.
    Additional Material: 3 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19593010520
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    Über Subchalkogenidphasen des Titans (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 302 (1959), S. 17-36 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The systems TiS—Ti, TiSe—Ti, and TiTe—Ti have been investigated by X-ray analysis.The range of homogeneity of the TiX-phases in all these systems extends to the composition of TiX0.8. In the systems TiS—Ti and TiSe—Ti, a Ti3X2-phase with a limit composition of TiX0.5 follows, whereas in the tellurium system a Ti2Te-phase (limit composition TiTe0.25) occurs. In the case of both TiSe and TiTe, a new hexagonal modification has been manifested; furthermore, the TiSe-phase crystallizes in a third lattice being trigonal. These new modifications are the stable forms of the phases TiSe and TiTe representing overstructures of the NiAs-type. The structures of other phases are: \documentclass{article}\pagestyle{empty}\begin{document}$$ \begin{array}{l} {\rm Ti}_{\rm 3} {\rm S}_{\rm 2} \,\,{\rm WC - type;} \\ {\rm Ti}_{\rm 3} {\rm S}_{\rm 2} \,\,\,{\rm NiAs - type;} \\ {\rm Ti}_{\rm 2} {\rm Te}\,\,{\rm tetragonal}\,{\rm unknown}\,{\rm structure}{\rm.} \\ \end{array} $$\end{document}
    Notes: Es wurden die Systeme TiS/Ti, TiSe/Ti und TiTe/Ti röntgenographisch untersucht. Der Homogenitätsbereich der TiX-Phasen erstreckt sich in allen Systemen etwa bis zur Zusammensetzung TiX0,8. In den Systemen TiS/Ti und TiSe/Ti folgt eine Ti3X2-Phase mit einem Homogenitätsbereich bis zur Zusammensetzung TiX0,5, in dem System TiTe/Ti eine Ti2Te-Phase mit einem Homogenitätsbereich bis zur Zusammensetzung TiTe0,25. Die Löslichkeit der Chalkogene im Titanmetall nimmt zum Tellur hin stark ab.Bei der TiSe- und TiTe-Phase wurde außer der bereits bekannten NiAs-Form eine weitere hexagonal kristallisierende Modifikation festgestellt, bei der TiSe-Phase noch eine dritte trigonal kristallisierende. Beide neu gefundenen Modifikationen sind die stabilen Formen dieser Phasen und stellen Überstrukturen des NiAs-Typs dar. Die Ti3S2-Phase kristallisiert im WC-Typ, die Ti3Se2-Phase im NiAs-Typ und die Ti2Te-Phase in einer tetragonalen Struktur unbekannten Typs.
    Additional Material: 3 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19593020104
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    Über die Bildung salzartiger Verbindungen bei der Umsetzung von Antimon(V)-chlorid mit Äthylat (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 302 (1959), S. 88-102 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On reaction of SbCl5 with NaOC2H5 salt-like compounds with cation co-ordination number 4 and anion co-ordination number 6 are formed: [SbCla(OC2H5)4-a] [SbClb(OC2H5)6-b]. In polar solvents these substances show electrolytical conductivity and their molecular weights in dilute solution prove complete dissociation into two particles. In nonpolar solvents the compounds are also dissolved but now in a molecular form SbClc(OC2H5)5-c. The latter solutions have no electrolytical conductivity. IR-spectra of the compounds in polar and nonpolar solutions are different from each other.
    Notes: Bei der Umsetzung von SbCl5 mit NaOC2H5 entstehen heteropolare Verbindungen mit 4fach koordiniertem Kation und 6fach koordiniertem Anion: [SbCla(OC2H5)4-a] [SbClb(OC2H5)6-b]. In polaren Lösungsmitteln zeigen diese Substanzen elektrolytische Leitfähigkeit und Molekulargewichte, die in verdünnter Lösung auf vollständige Dissoziation schließen lassen. In unpolaren Lösungsmitteln sind die Verbindungen in homöopolarer Form SbClc(OC2H5)5-c gelöst. Diese Lösungen zeigen nur sehr geringe Leitfähigkeit. Die Infrarotspektren der Verbindungen in polaren und unpolaren Lösungen unterscheiden sich stark voneinander.
    Additional Material: 13 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19593020109
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    Masthead (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 302 (1959) 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19593020301
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    Bildungswärme von La2O3 und La(OH)3 (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 299 (1959), S. 227-231 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The heat of reaction 2 La + 1,5 O2 = La2O3 was determined to 446 ± 2 kcal/Mol by measuring the heats of solution of La2O3 in 0,1 n HCl and comparing it with the heat of solution of La in 0,1 n HCl by BOMMER and HOHMANN. The older values of the heat of combustion were discussed and the mistake of the extreme value of Roth cleared up.The heat of hydratation 1/2 La2O3 + 1,5 H2O = La(OH)3 was determined to 20,2 ± 0,7 kcal/Mol by measuring the heat of solution of cristallised La(OH)3 in 0,1 n HCl.
    Notes: Die Bildungswärme von La2O3 wurde durch vergleichende Messung der Lösungswärmen von La2O3 und La in 0,1 n HCl zu 446 ± 2 kcal/Mol bestimmt und mit drei älteren direkten Messungen der Verbrennungswärme verglichen. Bei dem abnorm hohen Wert von ROTH (539) wurde eine Fehlerquelle nachgewiesen.Die Hydratisierungswärmen von La2O3 wurde durch vergleichende Messung der Lösungswärme von krist. La(OH)3 und La3O2 zu 20,2 ± 0,7 kcal/Mol bestimmt.
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    Bildung siliciumorganischer Verbindungen. VI. Darstellung ringförmiger Siliciummethylenverbindungen (Cyclocarbosilane) aus Si(CH3)4 (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 299 (1959), S. 232-240 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: 1. Higher molecular siliconmethylene compounds have been prepared by thermic decomposition of Si(CH3)4. The composition of the reaction mixture relies on their stay period in the reaction tube. The experimental conditions of the forming of higher boiling and meltable silmethylene compounds are described.2. A number of compounds have been isolated from the reaction mixture, see „Inhaltsübersicht“. The common structure of the compounds has been found to consist of sixmembered rings which have a skeleton of alternate silicon and carbon atoms.
    Notes: 1. Aus Si(CH3)4 lassen sich durch thermische Zersetzung höhermolekulare Siliciummethylenverbindungen darstellen. Die Zusammensetzung der Reaktionsprodukte ist von ihrer Verweilzeit im Reaktionsgefäß abhängig. Es werden die experimentellen Bedingungen zur Darstellung höhersiedender und schmelzbarer Siliciummethylenverbindungen angegeben.2. Es wurden folgende Verbindungen aus dem Reaktionsgemisch isoliert. Si2C6H18, Si2C7H20, Si3C8H22, Si3C9H24, Si4C10H26, Si4C11H28, Si5C13H34, Si6C14H36, Si7C18H46, Si8C20H50, Si8C24H66, Si9C27H74. Die Si-Atome sind stets über je ein C-Atom verbunden. Das Gemeinsame im Aufbau der Verbindungen mit 3 und mehr Si-Atomen besteht darin, daß sie aus Sechsringen mit drei Si- und drei C-Atomen bestehen, die im Ring abwechselnd angeordnet sind.
    Additional Material: 2 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19592990317
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    Geschmolzenes Antimon (III)-chlorid alsionisierendes„wasserähnliches“ Lösungsmittel. I (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 299 (1959), S. 252-270 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Fused antimony(III) chloride is a „water-like“ ionizing solvent for a considerable number of organic and inorganic compounds, especially for convalent ones.The specific conductivity of fused SbCl3 (in the range of 10-6 [Ohm-1 cm-1]) is increased by solving electrolytes. The proposed self-dissociation, (x + 1) SbCl3 ⇌ SbCl2+ + Cl- · x SbCl3, is discussed in regard to acid-base problems.The preparations of crystalline addition compounds are described.
    Notes: Das geschmolzene Antimon(III)-chlorid wird als ionisierendes Lösungsmittel in den Kreis der Solventien mit gewissen „wasserähnlichen“ Eigenschaften eingereiht.Es zeigt ein gutes Lösungsvermögen für viele organische Verbindungen. Von anorganischen Verbindungen ist ebenfalls eine beträchtliche Anzahl löslich; einige Salzgruppen sind weitgehend unlöslich.Kristallisierte Solvate sind sowohl von organischen als auch von anorganischen Verbindungen erhältlich. Eine Solvatation dieser Verbindungen in Lösung ist ebenfalls anzunehmen.Die elektrische Eigenleitfähigkeit des geschmolzenen Antimon(III)-chlorides in der Größenordnung von 10-6 Ohm-1 · cm-1 und der Anstieg der spezifischen Leitfähigkeit beim Auflösen von Elektrolyten in der Schmelze sowie der Verlauf dieser Leitfähigkeitskurven zeigen ein „wasserähnliches“ Verhalten des Solvens SbCl3 an. Die Eigenleitfähigkeit der Verbindung SbCl3 in geschmolzenem Zustande wird auf das folgende Dissoziationsschema zurückgeführt: (x + 1) SbCl3 ⇌ SbCl2+ + Cl- · x SbCl3.Danach sind, in Analogie zum Lösungsmittel Wasser, Verbindungen, die in Lösung die Konzentration der SbCl2+-Ionen erhöhen, Säurenanaloge; Verbindungen, welche die Konzentration der Cl--Ionen erhöhen, sind Basenanaloge. Das Verhalten solcher Verbindungen in geschmolzenem SbCl3 wird durch Leitfähigkeitsmessungen und kryoskopische Messungen untersucht.
    Additional Material: 7 Ill.
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    Oxydation von Phosphordampf mit Sauerstoff in Wasserdampfatmosphäre (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 300 (1959), S. 261-274 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: An orange yellow substance the phosphorus content of which varies form 87 to 91 per cent is formed by oxidizing phosphorus vapour by atmospheric oxygen in the presence of water vapour. The compositions of the products with the lowest phosphorus content closely correspond to the formula P4nOnHn. Because of its insolubility in all common solvents and the chemical behaviour, the amorphous yellow solid is supposed to consist of a polymeric network of P-atoms to which OH-groups are fixed.When heated to 250-300°C in inert gas atmosphere the substance is decomposed to P(V)-compounds and products similar to red phosphorus. At normal atmosphere conditions it is slowly oxidized to H3PO2, H3PO3, and small amounts of H3PO4. In addition to PH3 and H2, the same hydroxy-acids are formed by treating the substance with cold N NaOH. Complete oxidation is achieved in aqueous suspension by means of hypoiodite yielding among others considerable amounts of the same very slightly soluble alkali“ ts of an acid of lower-valent phosphorus recently described by Blaser
    Notes: Bei der Oxydation von Phosphordampf mit Luftsauerstoff bildet sich in Gegenwart von Wasserdampf ein orangegelbes Produkt, dessen Phosphorgehalt zwischen 87 und 91% schwankt. Die Zusammensetzung der Produkte mit dem niedrigsten Phosphorgehalt kommt der Formel P4nOnHn nahe. Die Eigenschaften dieser Substanz wurden untersucht und mit denen des roten und des Schenckschen Phosphors verglichen. Auf Grund des physikalischen und chemischen Verhaltens wird vermutet, daß der erhaltene gelbe Stoff aus einem polymeren Netzwerk von Phosphoratomen aufgebaut ist, an welche OH-Gruppen gebunden sind.Die dargestellte Substanz ist amorph und in allen gebräuchlichen Lösungsmitteln unlöslich. Sie zersetzt sich bereits langsam an der Luft unter Oxydation zu H3PO2, H3PO3 und wenig H3PO4. Beim Erhitzen unter Inertgas auf 250 - 300°C zerfällt sie in P(V)-Verbb. und Produkte mit Phosphorgehalten über 90%, die mit steigendem P-Gehalt dem roten Phosphor immer ähnlicher werden. Behandeln der Substanz mit 1 n NaOH führt zur Zersetzung, wobei PH3, H2, H3PO2, H3PO3 und wenig H3PO4 gebildet werden. Durch Hypojodit erfolgt in wäßriger Aufschlämmung vollständige Oxydation, wobei unter anderem in beträchtlicher Menge schwerlösliche Alkalisalze einer Säure des Phosphors mit niederwertigem Phosphor gebildet werden. Diese Salze sind identisch mit den kürzlich von Blaser1) bei der Oxydation von rotem Phosphor mit Brom in alkalischem Medium erhaltenen Verbindungen.
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    Zur Kenntnis der Basenreaktion des Chromhexacarbonyls (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 300 (1959), S. 288-294 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: According to recent investigations binuclear complexes are formed on treating chromium carbonyl with alkali. Methanolic alkali hydroxide leads to a product containing methoxyl groups, whereas with ethanolic alkaline solutions the alcohol-free K2[(CO)3Cr(OH)3Cr(CO)3H] is produced. The proposed structure is consistent with conductivity and magnetic measurements, potentiometric titrations in aqueous and non-aqueous solvents, as well as with its chemical behaviour. Former interpretations have to be corrected according to this paper.
    Notes: Nach neueren Untersuchungen entstehen bei der Basenreaktion des Chromhexacarbonyls 2 kernige Komplexe. Im methanol-alkalischen System erhält man ein methoxylhaltiges Produkt, während in Äthanol-Alkalilauge ein alkohol-freies Dikalium-hydrogen-hexacarbonyl-m̈-triol-dichromat(0), K2[(OC)3Cr(OH)3Cr(CO)3H], gebildet wird. Die Konstitution dieser Verbindungen wurde durch Leitfähigkeit, chemisches Verhalten, IR-Spektren und magnetische Messungen, sowie durch Titration in wäßrigem und wasserfreiem Medium gestützt. Eine frühere Formulierung für das Basenreaktions-produkt ist entsprechend zu revidieren.Mit Äthylendiaminhydrat erhält man aus den 2 kernigen Chromtricarbonyl-Verbindungen eine Substanz vom Tricarbonyltriammin-Typ.
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    Über Eisencarbonylverbindungen mit Elementen der 3. bis 5. Hauptgruppe (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 300 (1959), S. 275-287 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: [Fe(CO)4]2- reacts with compounds of arsenic, anitmony, and bismuth producing non-ionogenic iron carbonyl compounds, such as As2Fe3(CO)11, SbFe2(CO)8, and Bi2Fe5(CO)20. Similar reactions with tin, lead and thallium salts lead to the following intensively coloured complexes Sn2Fe5(CO)20, PbFe3(CO)12 and Tl2Fe3(CO)12.On the basis of infrared and magnetic susceptibility measurements the configuration of the compounds mentioned above is discussed. Linear structures result for the paramagnetic As2Fe3(CO)12 and SbFe(CO)8, whereas for the other compounds a centric configuration is proposed.
    Notes: Mit Verbindungen des Arsens, Antimons und Wismuts, vorwiegend in ihrer dreiwertigen Form, reagiert Tetracarbonylferrat unter Bildung nichtionogener Eisencarbonyl-verbindungen verschiedenartigen Bautyps, nämlich As2Fe3(CO)11, SbFe2(CO)8, SbFe(CO)4 sowie Bi2Fe5(CO)20. Entsprechende Umsetzungen mit Zinn-, Blei- und Thalliumsalz-Lösungen führen zu den tieffarbigen Komplexen Sn2Fe5(CO)20, PbFe3(CO)12 und Tl2Fe3(CO)12. Die in polaren Solventien gut löslichen Substanzen sind thermisch wie gegenüber Oxydationsmitteln wesentlich empfindlicher als die Eisencarbonylchalkogenide.Auf Grund IR-spektroskopischer und magnetischer Untersuchungen werden Strukturfragen erörtert. Lediglich die Verbindungen As2Fe3(CO)11 (I) und SbFe2(CO)8 (II) sind paramagnetisch; das „μ pro As“ von I stimmt mit dem μ von II überein. Daraus ergeben sich lineare Strukturen, während in anderen Fällen, wie bei der Bi-oder Sn-Ver-bindung, auch eine mehr zentrische Konstitution - in jedem Fall mit endständigen CO-Gruppen - zu diskutieren ist.
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    Die Basenreaktionen der Hexacarbonyle der Chromgruppe. III. Die Basenreaktion des Wolframhexacarbonyls (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 300 (1959), S. 304-310 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The reaction of tungsten carbonyl with alkali leads to the formation of an anion, the tungsten atoms being partially reduced and carrying a formal negative charge. With methanolic alkali a mixture of [W2(CO)6(OH)2(CH 3OH)2]2- and [W2(CO)6(OH)2(CH 3OH)2]1- results at 100° C, whereas at 130° C [w3(CO)9(OH)(OCH3)(CH3OH)]3- is formed. With ethanolic potassium hydroxide, however, at 100° C and above the corresponding alcohol free products result.
    Notes: Zum Unterschied von den bereits eingehend untersuchten Reaktionen des Chrom-, Molybdän- und Rheniumcarbonyls mit Alkalihydroxyd, die zu Reaktionsprodukten mit der Oxydationsstufe 0 oder +1 des Carbonylmetalls führen, hat man es bei den entsprechenden Reaktionen des Wolframcarbonyls mit einer teilweisen Reduktion unter Bildung eines Anions zu tun, in dem den Wolframatomen ein negativer Oxydationswert zukommt. Während bei 100° aus Methanol/KOH ein Gemisch von Hexacarbonyl-m̈-diol-dimethanol-diwolframat(0) und (-II) entsteht, bilden sich bei 130° im gleichen System 3kernige Enneacarbonyltriwolframate mit komplex gebundenem Methanol. Äthanol/Kalilauge reagiert hingegen mit W(CO)6 bei 100° und bei höherer Temperatur unter Bildung der gleichen 2kernigen alkoholfreien Verbindung. Aus den Lösungen der 2kernigen Basenreaktionsprodukte läßt sich das Wolfram(0) in Form des Tricarbonyltriammin wolframs nahezu quantitativ ausfällen.
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