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  • 1
    Electronic Resource
    Electronic Resource
    Zur Kenntnis der Chemie der Metallcarbonyle in flüssigem Ammoniak. I. Über die Reaktionen der Carbonyle des Eisens und Kobalts mit Alkalimetallen (1955)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 281 (1955), S. 190-198 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die monomeren und mehrkernigen reinen Carbonyle des Eisens und Kobalts lassen sich durch Lösungen von Alkalimetallen in flüssigem Ammoniak leicht zu den betreffenden Carbonylmetallaten reduzieren. Die Reaktionen werden durch Bestimmung der verbrauchten Alkalimetallmengen, der gebildeten Carbonylmetallate sowie der bei den Reaktionen freiwerdenden Gase quantitativ untersucht.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19552810309
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Über EisengallustinteProfessor Hans-Georg von Schnering zum 60. Geburtstage gewidmet (1991)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 598 (1991), S. 371-376 
    Details
    ISSN: 0044-2313
    Keywords: Iron gallic ink ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On Iron Gallic InkFrom Iron(III) chloride and gallic acid in gels single crystals could be obtained which will be the dye-stuff of iron gallic ink. The structure consists of a hexagonal iron gallic acid 1:1 framework. The oxidation state three of the iron could be confirmed by Mössbauer and XANES spectroscopy.
    Notes: Durch Kristallisation in Gelen erhält man aus Gallussäure und Eisen(III)-chlorid Einkristalle, die einen der wesentlichen Farbstoffe der Eisengallustinte darstellen dürften. Die Struktur besteht aus einem hexagonalen Gallussäure-Eisen-1: 1-Gerüst, in dessen Kanälen Hydronium-Ionen den Ladungsausgleich bewirken. Die Oxidationsstufe drei des Eisens wurde mit Mössbauer- und XANES-Spektroskopie bestätigt.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19915980134
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  • 3
    Electronic Resource
    Electronic Resource
    Zur Kenntnis der Chemie der Metallcarbonyle in flüssigem Ammoniak. Über die Reaktionen der Hexacarbonyle der Chromgruppe mit Alkali- und Erdalkalimetallen (1957)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 291 (1957), S. 122-130 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: In Analogie zu der früher(1) beschriebenen Umsetzung von Fe(CO)5 mit Alkalimetallen im Ammonosystem, die zur Bildung von Tetracarbonylferrat(-II) führt, Fe(CO)6 + 2 Na → [Fe(CO)4]Na2 + CO, lassen sich auch die Hexacarbonyle der Chromgruppe zu tiefgelben edelgaskonfigurierten Pentacarbonylmetallaten(-II) reduzieren: Me(CO)6 + 2 Na → [Me(CO)5]Na2 + CO (Me = Cr, Mo, W).Diese besitzen  -  wie das Tetracarbonylferrat(7hyphen;II)  -  ein Molekül CO weniger als die betreffenden monomeren Metallcarbonyle.Die Reaktionen werden durch Bestimmung der verbrauchten Alkalimetalle und der bei den Umsetzungen freiwerdenden Gase quantitativ untersucht und die Eigenschaften der entstandenen Verbindungen beschrieben.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19572910113
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  • 4
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    Radio observations of interplanetary magnetic field structures out of the ecliptic (1977)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: Observations of the out-of-ecliptic trajectories of type III solar radio bursts have been obtained from simultaneous direction-finding measurements in two independent satellite experiments, IMP-6 with spin plane in the ecliptic and RAE-2 with spin plane normal to the ecliptic. Burst-exciter trajectories were observed which originated at the active region and then crossed the ecliptic plane at about 0.8 AU. A considerable large-scale north-south component of the interplanetary magnetic field followed by the exciters is found. The apparent north-south and east-west angular source sizes observed by the two spacecraft are approximately equal, and range from 25 deg at 600 kHz to 110 deg at 80 kHz.
    Keywords: SOLAR PHYSICS
    Type: Solar Physics; 52; May 1977
    Format: text
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  • 5
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    Interplanetary baseline observations of type III solar radio bursts (1977)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: Simultaneous observations of type III radio bursts from spacecraft separated by 0.43 AU have been made using the solar orbiters Helios-A and Helios-B. The burst beginning at 19:22 UT on March 28, 1976, has been located from the intersection of the source directions measured at each spacecraft and from burst arrival-time differences. The source positions range from 0.03 AU from the sun at 3000 kHz to 0.08 AU at 585 kHz. The electron density along the burst trajectory and the exciter velocity (0.13c) were determined directly without the need to assume a density model, as has been done with single-spacecraft observations. The separation of Helios-A and -B has also provided measurements of burst directivity at low frequencies. For the March 28 burst the intensity observed from near the source longitude (Helios-B) was 3-10dB greater than that from 60 deg west of the source (Helios-A)
    Keywords: SOLAR PHYSICS
    Type: Solar Physics; 54; Oct. 197
    Format: text
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  • 6
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    Low frequency radio observations of the solar wind near the moon (1976)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: The RAE-2 lunar orbiter often measures sporadic 20-40 dB intensity increases in the frequency range of 25-110 kHz. Numerous examples of the disappearance of this intense noise during occultations of the sun have been observed. The average position of these occultations coincides with the average location of the plasma cavity above the nightside of the moon. We suggest that the observed high noise levels may be generated near the spacecraft by a disturbed solar wind electron population in the vicinity of the moon.
    Keywords: SOLAR PHYSICS
    Type: Geophysical Research Letters; 3; June 197
    Format: text
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  • 7
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    Solar radio spectrum extended to 10 km wavelength (1979)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: Solar radio spectra for quiet times and radio bursts in the wavelength range from 1 mm to 10 km are presented. Solar nonthermal emission in the range of 100 m to 10 km was monitored by means of long wire antennas connected to multi-channel radiometers in the frequency range 25 kHz to 10 MHz on board the IMP-6 and RAE-1 satellites. Flux densities for very intense type III bursts with intensities ranging from 10 to the -18th to 10 to the -14th W/sq m per Hz with maxima at 330 to 1500 m are shown, and a power-law wavelength distribution function of maximum burst intensities is derived. Intensities of a large type III noise storm are shown to increase with increasing wavelength to a peak near 500 m. The flux densities of both types of burst emission are observed to greatly exceed quiet sun intensities at long wavelengths.
    Keywords: SOLAR PHYSICS
    Type: Nature; 280; Aug. 16
    Format: text
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  • 8
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    Low frequency spectra of type III solar radio bursts (1978)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: Flux density spectra have been determined for 91 simple type III solar bursts observed by the Goddard Space Flight Center radio astronomy experiment on the IMP-6 spacecraft during 1971 and 1972. Spectral peaks were found to occur at frequencies ranging from 44 kHz up to 2500 kHz. Half of the bursts peaked between 250 kHz and 900 kHz, corresponding to emission at solar distances of about 0.3 to 0.1 AU. Maximum burst flux density sometimes exceeds 10 to the -14th W/sq m/Hz. The primary factor controlling the spectral peak frequency of these bursts appears to be a variation in intrinsic power radiated by the source as the exciter moves outward from the sun, rather than radio propagation effects between the source and IMP-6. Thus, a burst spectrum strongly reflects the evolution of the properties of the exciting electron beam, and according to current theory, beam deceleration could help account for the observations.
    Keywords: SOLAR PHYSICS
    Type: Solar Physics; 59; Oct. 197
    Format: text
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  • 9
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    Interplanetary baseline observations of type 3 solar radio bursts (1977)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Simultaneous observations of type III radio bursts using spacecraft separated by several tenths of an AU were made using the solar orbiters HELIOS-A and -B. The burst beginning at 1922 UT on March 28, 1976, was located from the intersection of the source directions measured at each spacecraft, and from the burst arrival time differences. Wide baseline observations give the radial distance of the source at each observing frequency. Consequently, coronal electron densities and exciter velocity were determined directly, without the need to assume a density model as is done with single spacecraft observations. The separation of HELIOS-A and -B also provided the first measurements of burst directivity at low frequencies. For the March 28 burst, the intensity observed from near the source longitude (HELIOS-B) was significantly greater than from 60 W of the source (HELIOS-A).
    Keywords: SOLAR PHYSICS
    Type: NASA-TM-X-71319 , X-692-77-90
    Format: application/pdf
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