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  • Photoelectron spectra  (2)
  • preparation  (2)
  • (CH3)4N+CF3IONO2-  (1)
  • 1
    ISSN: 0044-2313
    Keywords: Persulfonium salts ; preparation ; vibrational spectra ; NMR spectra ; crystal structure of CF3SF2+SbF6- ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Preparation and Spectroscopic Characterization of the Persulfonium Salts (CH3)(CF3)SF3+SbF6- and (CH3)(CF3)2SF2+SbF6- and Crystal Structure of CF3SF2+SbF6- [1].The preparation of the persulfonium salts (CH3)(CF3)SF3+SbF6- and (CH3)(CF3)2SF2+SbF6- by methylation of the sulfuranes CF3SF3 and (CF3)2SF2 with CH3OSO+SbF6- in liquid SO2 is reported. The thermolabile compounds are characterized by IR, Raman, 1H, 13C, and 19F NMR spectroscopy.CF3SF2+SbF6- crystallizes in the space group C2/c with a=16.889(8) Å, b=7.261(4) Å, c=13.416(7) Å, β=91.08° with 8 formula units per unit cell at 167 K. Cations and anions are connected via short SF contacts forming a Ψ-octahedral surrounding of the central S atom which is in close analogy to the already known CF3SF2+AsF6-.
    Notes: Es wird über die Darstellung der Persulfoniumsalze (CH3)(CF3)SF3+SbF6- und (CH3)(CF3)2SF2+SbF6- durch Methylierung der Sulfurane CF3SF3 und (CF3)2SF2 mit CH3OSO+SbF6- in flüssigem SO2 berichtet. Die thermolabilen Verbindungen werden durch IR-, Raman-, 1H-, 13C- und 19F-NMR-Spektroskopie charakterisiert. CF3SF2+SbF6- kristallisiert in der Raumgruppe C2/c mit a=16,889(8) Å, b=7,261(4) Å, c=13,416(7) Å, β=91,08° und 8 Formeleinheiten pro Einheitszelle bei 167 K. Kationen und Anionen sind über kurze SF-Kontakte verbunden und bilden eine Ψ-oktaedrische Umgebung des zentralen S-Atoms. Diese Struktur stimmt gut mit der des bereits bekannten CF3SF2+AsF6- überein.
    Additional Material: 2 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
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  • 3
    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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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 622 (1996), S. 557-561 
    ISSN: 0044-2313
    Keywords: Thiosulfonium salts ; preparation ; vibrational, NMR spectra ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On the Preparation of Di(i-propyl)thiosulfonium Salts [1]The preparation of the mercaptosulfonium salts (i-C3H7)2SSX+SbCl6- (X = H, D) and of the chlorothiosulfonium salts (i-C3H7)2SSCl+MF6- (M = As, Sb) and (i-C3H7)2SSSCl+SbCl6- is reported. They are formed by reaction of chlorinated or protonated (i-C3H7)2S with excess H2S or SCl2 and S2Cl2. The thiosulfonium compounds are characterized by vibrational and NMR spectroscopic methods.
    Notes: Es wird über die Darstellung der Mercaptosulfoniumsalze (i-C3H7)2SSX+SbCl6- (X = H, D) und der Chlorthiosulfoniumsalze (i-C3H7)2SSCl+MF6- (M = As, Sb) und (i-C3H7)2SSSCl+SbCl6- berichtet. Sie werden aus chloriertem oder protoniertem (i-C3H7)2S durch Kondensationsraktionen mit überschüssigem H2S oder SCl2 und S2Cl2 gebildet. Die Charakterisierung der Thiosulfoniumverbindungen erfolgt schwingungs- und NMR-spektroskopisch.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 0044-2313
    Keywords: Chlorine Nitrate ; Tetramethylammoniumtrifluoromethylnitratoiodate(I) ; (CH3)4N+CF3IONO2- ; vibrational spectra ; Halogen Nitrates ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Formation and Spectroscopic Characterization of Tetramethylammoniumtrifluoromethylnitratoiodate(I) (CH3)4N+CF3IONO2-(CH3)4N+CF3ICI- reacts with CIONO2 to (CH3)4N +CF3IONO2-. The salt is characterized by vibrational spectra.
    Notes: (CH3)4N+CF3ICI- reagiert mit ClONO2 unter Chlorkomproportionierung zu (CH3)4N+CF3IONO2-. Das erhaltene Salz wird schwingungsspektroskopisch charakterisiert.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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