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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 611 (1992), S. 114-124 
    ISSN: 0044-2313
    Keywords: Trifluoromethylsulfane and derivatives ; Photoelectron spectra ; MNDO calculations ; Thermal decomposition ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Photoelectron Spectra and Molecular Properties. 132. Trifluoromethylsulfane and Derivatives F3CSX (X = CF3, Cl, Br, I)The He(I) photoelectron spectra of trifluoromethylsulfane F3CSH and its derivatives F3CSX (X = CF3, Cl, Br, I) are assigned by Koopmans' correlations, IEnv = -εjMNDO, with MNDO eigenvalues, by radical cation state comparison and based on resolved vibrational fine structures, which can' be discussed by MNDO FORCE calculations. The spin/orbit splitting in F3CSI can be approximated by additional ITEREX-85 calculations. Gasphase thermolysis of the trifluoromethylhalogensulfanes F3CSX at 10-4 mbar yields decomposition temperatures, which decrease from X = Cl to I, and as fragmentation products of presumably radical intermediates, in addition to the respective halogens X2 and F2C=S, also F3CX as well as S2 and CS2 (X =Cl, Br) are PE spectroscopically detected.
    Notes: Die He(I)-Photoelektronen-Spektren von Trifluormethylsulfan F3CSH und seinen Derivaten F3CSX (X = CF3, Cl, Br, I) werden durch Koopmans-Korrelationen, IEnv = -εjMNDO, mit MNDO-Eigenwerten, durch Radikalkationszustands-Vergleiche sowie anhand aufgelöster, mit Hilfe von MNDO FORCE-Berechnungen diskutierbarer Schwingungsfeinstrukturen zugeordnet. Die Spin/Bahn-Aufspaltung in F3CSI läßt sich mit zusätzlichen ITEREX-85-Berechnungen erfassen. Gas-phasen-Thermolysen der Trifluormethylhalogensulfane F3CSX bei 10-4 mbar ergeben von X = Cl zu I absinkende Zersetzungstemperaturen und als Produkte der vermutlich über Radikale verlaufenden Fragmentierungen lassen sich außer dem jeweiligen Halogen X2 und F2C = S auch F3CX sowie S2 und CS2 (X = Cl, Br) PE-spektroskopisch nachweisen.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 611 (1992), S. 125-133 
    ISSN: 0044-2313
    Keywords: Trifluoromethyldisulfane and derivatives ; Photoelectron spectra ; MNDO calculations ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Photoelectron Spectra and Molecular Properties. 133. Trifluoromethyldisulfane and Derivates F3CSSX (X=CF3, F, Cl, Br)The He(I) photoelectron spectra of trifluoromethyldisulfane F3CSSH and its derivatives F3CSSX (X=CF3, F, Cl, Br) are assigned by Koopmans correlations, IEnv = -εjMNDO, with MNDO eigenvalues and by radical cation state comparison. Of special interest are the nSπ/nSπ splittings, which amount to 1.15 eV F3C—SS—F or 0.87 eV in F3—SS—Cl, and the dependance of which on the dihedral angle ω(XS—SX), on the SS bond length and on the acceptor effect of the F3C substituents is discussed.
    Notes: Die He(I)-Photoelektronen-Spektren von Trifluormethyldisulfan F3CSSH und seinen Derivaten F3CSSX (X = CF3, F, Cl, Br) werden durch Koopmans-Korrelationen, IEnv = -εjMNDO, mit MNDO-Eigenwerten und durch Radikalkationzustands-Vergleiche zugeordnet. Von besonderem Interesse sind die nSπ/nSπ- Aufspaltungen, die in F3C—SS—F 1,15 eV oder in F3C—SS—Cl 0,87 eV betragen und die in Abhängigkeit vom Diederwinkel ω(XS—SX), der SS-Bindungslänge und dem Akzeptor-Effekt der F3C-Substituenten diskutiert werden.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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