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  • Diffuse reflectance spectrometry  (1)
  • EPR, X-Ray  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Microscopic in situ diffuse reflectance spectroelectrochemistry of solid state electrochemical reactions of particles immobilized on electrodes (1997)
    Springer
    Journal of solid state electrochemistry 1 (1997), S. 62-67 
    Details
    ISSN: 1433-0768
    Keywords: Key wordsSpectroelectrochemistry ; Diffuse reflectance spectrometry ; Solid state electrochemistry ; Voltammetry ; Microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract An instrumental setup is described which allows electrochemical measurements to be performed with solid particles immobilized on the surface of a graphite electrode with in situ recording of diffuse reflectance spectra under an incident light microscope. The instrument used includes a special electrochemical cell and a microscope which is interfaced by a light␣guide to a transputer-integrated photodiode-array spectrometer allowing measurements ranging from 320 to 950 nm with a resolution of 3.2 nm/pixel and a PC-interfaced potentiostat. The 0R0 geometry of the optical arrangement and the use of crossed polarization filters for blocking specular reflectance makes it possible to use the Kubelka-Munk function for quantifying the optical measurements. The above instrument has been used for the study of the electrochromic system of solid silver octacyanomolybdate(IV/V) adjacent to a silver nitrate solution. The in situ diffuse reflec tance spectroelectrochemical measurements prove that the electrochemical reaction starts at the graphite/sample interface and then advances into the bulk of the sample towards the sample/electrolyte interface. The ratios Red:Ox determined by spectrometry and chronocoulometry as a function of electrode potentials are identical.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100080050023
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  • 2
    Electronic Resource
    Electronic Resource
    Synthese und Charakterisierung von Metallocen-Chelaten heterocyclischer 1,2-Dithiolate (1994)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 620 (1994), S. 1768-1776 
    Details
    ISSN: 0044-2313
    Keywords: Metallocene dichalcogenolene ; DNMR ; EPR, X-Ray ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis and Characterization of Metallocene Chelates of Heterocyclic 1,2-DithiolatesSynthesis and properties of metalocene dithiolene chelates Cp2ML with metal(IV) ions (M) of group IVA (Ti, Zr, Hf) and of vanadium with L = dmit (1,3-dithiole-2-thione-4,5-dithiolate), dmt (1,2-dithiole-3-thione-4,5-dithiolate), dmid (1,3-dithiole-2-one-4,5-dithiolate) and dmise (1,3-dithiole-2-selone-4,5-dithiolate) are described. The structures of these compounds were discussed using IR-, UV/VIS-, 1H-NMR-, 13C-NMR- and EPR data. The activation parameters of the chelate ring inversion of titanocene dithiolenes (Cp2TiL) and the x-ray structure of Cp2Ti(dmid) are given.
    Notes: Synthese und Eigenschaften neuer Metallocen-Dithiolen-Chelate Cp2ML der Metall(IV)-Ionen (M = Ti, Zr, Hf) sowie des Vanadiums mit L = dmit (1,3-Dithiol-2-thion-4,5-dithiolat), dmt (1,2-Dithiol-3-thion-4,5-dithiolat), dmid (1,3-Dithiol-2-on-4,5-dithiolat) und dmise (1,3-Dithiol-2-selon-4,5-dithiolat) werden beschrieben. Die Strukturen der Verbindungen werden anhand der IR-, UV/VIS-, Massen-, 1H-NMR-, 13C-NMR- bzw. EPR-Spektren diskutiert. Die durch dynamische Kernresonanzspektroskopie bestimmten Aktivierungs-parameter der Chelatringinversion der Titanocen-Dithiolene (Cp2TiL), sowie die Röntgenkristallstrukturanalyse von Cp2Ti(dmid) werden vorgestellt.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19946201018
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