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  • 1
    Electronic Resource
    Electronic Resource
    Cr 2+ -cobaloxime electron transfer reactions (1974)
    [s.l.] : Nature Publishing Group
    Nature 249 (1974), S. 246-247 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Using DH" to represent the mono-anion of dimethylglyoxime, the simple cobaloximes are of the form [Co(DH)2B2]+, in the case where B is a neutral ligand such as NH3 or H2O. Neutral and anionic complexes are well known, with one and two anionic ligands respectively, and the alkyl complexes are ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/249246a0
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  • 2
    Electronic Resource
    Electronic Resource
    Kinetics of Formation of the Monoacetylacetonato-Iron (III) Complex (1965)
    [s.l.] : Nature Publishing Group
    Nature 208 (1965), S. 1201-1202 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The complex Fe(aca)2+ was reported to be formed from acetylacetone (Haca) reacting with Fe(III) at ^H = l-65-2-65 (ref. 4). To avoid the formation of Fe(aca)£ we have examined this reaction under conditions where the Fe(III)/ Haca ratio was maintained at between 100/4 and 300/4, and high acid ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/2081201a0
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  • 3
    Electronic Resource
    Electronic Resource
    Study of diamond thin-film growth mechanism in a filament-assisted excimer laser ablation system (1994)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 76 (1994), S. 8113-8116 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Diamond and amorphous carbon films have been deposited on silicon (100) substrates by filament-assisted XeCl excimer laser ablation of graphite targets. The influence of process parameters on the growth mechanism of diamond were studied by depositing films over a wide range of gas pressures and substrate temperatures. The surface morphology and bonding of the deposited films were characterized by scanning electron microscopy, and Raman and electron-energy-loss spectroscopy. In these experiments, microcrystalline diamond films with growth rates comparable to conventional chemical-vapor-deposition and plasma-enhanced chemical-vapor-deposition techniques could only be obtained at substrate temperatures and hydrogen pressures greater than 700 °C and 1.3 mbar, respectively. Conversely, the best conditions for growing carbon films with predominately sp3-type bonding structures were at temperatures and pressures less than 300 °C and 0.3 mbar, respectively. These results suggest that carbon-hydrogen gas phase reactions as well as gas-surface reactions are both necessary for the formation of diamond. © 1994 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.357860
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  • 4
    Electronic Resource
    Electronic Resource
    Production and structural characterization of BN/TiN multilayers (2000)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 87 (2000), S. 1235-1244 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A pulsed excimer laser was used to evaporate targets of boron nitride and titanium nitride in an attempt to produce hard thin films on crystalline silicon substrates. The films were either pure TiN or BN layers, as well as alternating multilayers and mixed layers. Deposition could be assisted by ion bombardment. The films were characterized by Auger electron spectroscopy, Fourier transform infrared spectroscopy (FTIR), and x-ray diffraction. A selection of films was also studied by profilometry in order to determine deposition rate and the type of stress present. The level of stress in TiN films was also a function of the deposition temperature and could be varied with the use of ion bombardment. Amorphous, cubic, and hexagonal BN films were produced and the effect of the stress of the substrate on these layers was investigated. Multilayers were stressed, having alternating layers of nanocrystalline TiN and amorphous BN. Mixtures consisted of nanometer-sized regions of crystalline TiN and sp2 coordinated boron nitride. FTIR spectra and high-resolution transmission electron microscope pictures suggested that in the mixtures, boron nitride planes tended to parallel the surface of the TiN grains. No sign of stress-driven formation of cubic BN was observed in the multilayers nor in the nanosized mixtures, regardless of the stress level present in them; neither was there any sign of titanium borides or other structures that might increase the hardness of the films. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.372002
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  • 5
    Electronic Resource
    Electronic Resource
    Dielectric properties of BaTiO3/SrTiO3 multilayered thin films prepared by pulsed laser deposition (1998)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 72 (1998), S. 1394-1396 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: BaTiO3/SrTiO3 multilayered thin films were deposited on Si and Pt/Si substrates. X-ray diffraction clearly shows the formation of the superstructures. Phase transition properties were studied via dielectric measurements. Glassy behavior, characterized by a strong frequency dispersion of dielectric properties, was found in samples with a total thickness of 400 nm, while in samples with a total thickness of 800 nm, normal ferroelectric phase transitions with two dielectric peaks were observed. A preliminary interpretation assumes that size effects which frustrate long range ferroelectric ordering may lead to the relaxational behavior in BaTiO3/SrTiO3 superstructures. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.121066
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  • 6
    Electronic Resource
    Electronic Resource
    Stereochemical and Kinetic Significance of Ion Association in Fast Radiochloride Exchange Reactions at Silicon (1969)
    [s.l.] : Nature Publishing Group
    Nature 222 (1969), S. 1163-1164 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Table l. EFFECT OF SALT CONCENTRATION ON THE CHLORIDE EXCHANGE REACTION OF TRIPHENYLCHLOROSILANE AND TRITYLCHLORIDE IN BENZENE PhgSiCl at 30 C 0-57 2-92 0-69 ±0-018 2-02 ± 0-13 2-05 ± 0-08 3-24 ± 0-19 6-18 ± 0-30 Ph3CClat40C 0-39 5-05 (4-92 ± 0-33) 〉 ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/2221163a0
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  • 7
    Electronic Resource
    Electronic Resource
    Alkyl–cobalt mediation of DDT hydrolysis (1974)
    [s.l.] : Nature Publishing Group
    Nature 249 (1974), S. 286-287 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] FIG. 1 The macrocyclic ligand CR. Tho Co(II) complex of CR was prepared in aqueous ethanol by the standard template method7, and reduced in situ to the nucleophilic Co (I) species using borohydride at pH 9. This was allowed to react under nitrogen with pure p, p'-DDT, and the solution warmed to 40 ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/249286a0
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  • 8
    Electronic Resource
    Electronic Resource
    Die Funktion des Metall-Ions in der Carboanhydrase (1972)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 84 (1972), S. 461-471 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Im vorliegenden Fortschrittsbericht soll eine Zusammenfassung über die Chemie des Metall-Ions im Enzym Carboanhydrase gegeben werden. Der Schwerpunkt liegt dabei auf der Ableitung der Wirkungsweise des Enzyms aus dem Studium des Metalls. Die Ergebnisse aus der Chemie der Metallenzyme scheinen eine Neubewertung einiger Aspekte der herkömmlichen Metallkomplex-Chemie zu verlangen.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19720841004
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  • 9
    Electronic Resource
    Electronic Resource
    Metal Ion Function in Carbonic Anhydrase (1972)
    Weinheim : Wiley-Blackwell
    Angewandte Chemie International Edition in English 11 (1972), S. 408-417 
    Details
    ISSN: 0570-0833
    Keywords: Carbonic anhydrase ; Enzymes ; Bioinorganic chemistry ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The purpose of this review is to present an up-to-date account of the chemistry of the metal ion in the enzyme carbonic anhydrase. The interest lies in how the study of the metal may lead to deductions concerning the chemistry of the enzyme's action and in the way that metalloenzyme chemistry seems to demand a new appraisal of some aspects of the established chemistry of metal complexes.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/anie.197204081
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  • 10
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    Dissipative Enhancement of the Response of a Bistable Noisy Oscillator to External Driving (2002)
    American Physical Society
    Details
    Publication Date: 2002-06-04
    Print ISSN: 0031-9007
    Electronic ISSN: 1079-7114
    Topics: Physics
    Published by American Physical Society
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