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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 609 (1992), S. 77-81 
    ISSN: 0044-2313
    Keywords: Tetraphenylphosphonium pentachlorothioarsenate(III) ; tetraphenylphosphonium tetrachlorooxotungstate; ; crystal structures ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Formation of PPh4[WOCl4 · THF] and PPh4Cl · 4As4S3 from W(CO)6 and PPh4[As2SCl5] and their Crystal StructuresWhen W(CO)6 and PPh4[As2SCl5] are irradiated with UV light in tetrahydrofurane, PPh4[WOCl4 · THF], PPh4 Cl· 4As4S3 and PPh4[Cl2H] are obtained. X-ray crystal structure determinations were performed. PPh4[WOCl4 · THF], monoclinic, space group P21/c, Z = 4, a = 1207.5(2), b = 1003.7(2), c = 2642.0(5) pm, β = 114.71(1)°, R = 0.049% for 2824 reflexions; PPh4+ and [WOCl4. THF]- ions are present, the WOCl4 group having the shape of a tetragonal Pyramid with a short W = O bond (169 pm) and the THF molecule being weakly associated (W—O 236 pm). PPh4Cl · 4AsS3, tetragonal, I41/a, Z = 4, a = 1742.3(3), c = 1664.5(4) pm, R = 0.066% for 1350 reflexions; it consists of separate PPh4+ and Cl- ions and As4S3 molecules.
    Notes: Bei der Bestrahlung von W(CO)6 und PPh4[As2SCl5] mit UV-Licht in Tetrahydrofuran entstehen PPh4[WOCl4 · THF], PPh4Cl · 4As4S3 und PPh4[Cl2H]. Von den beiden ersteren wurden die Kristallstrukturen mittels Röntgenbeugung aufgeklärt. PPh4[WOCl4 · THF]: monoklin, Raumgruppen P21/c, Z = 4, a = 1207,5(2), b = 1003,7(2), c = 2642,0(5) pm, β = 114,71(1)°, R = 4,9% für 2824 Reflexe; es ist aus Ionen PPh4+ und [WOCl4 · THF]- aufgebaut, wobei die WOCL4-Gruppe die Gestalt einer quadratischen Pyramide mit einem kurzen W = O-Abstand (169 pm) hat und das THF-Molekül relativ locker daran assoziiert ist (W—O 236 pm). PPh4Cl · 4As4S3: tetragonal, I41/a, Z = 4, a = 1742,3(3), c = 1664,5(4) pm, R = 6,6% für 1350 Reflexe; es besteht aus einzelnen Ionen PPh4+ und Cl- sowie As4S3-Molekülen.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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