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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 622 (1996), S. 790-794 
    ISSN: 0044-2313
    Keywords: Diselenium dihalide complexes ; arsenic trihalide and halide ions ; crystal structures ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis and Crystal Structures of (PPh4)2[As2Se4Cl12] and (PPh4)2[As2Se4Br12]The reaction of PPh4Cl and As2Se3 with SOCl2 or with chlorine in dichloromethane affords (PPh4)2[As2Se4Cl12] with good yields. From PPh4Br, As2Se3 and bromine the corresponding bromo compound was obtained. According to the X-ray crystal structure determinations both compounds are isotypic, crystallizing in the space group of P1. In the anions two Se2X2 molecules are linked with two X- ions forming an Se4X2 ring in chair conformation. Each X--ion is associated with an additional AsX3 molecule (X = Cl, Br).
    Notes: Bei der Umsetzung von PPh4Cl und As2Se3 mit SOCl2 oder mit Chlor in Dichlormethan entsteht (PPh4)2[As2Se4Cl12] in guter Ausbeute. Aus PPh4Br, As2Se3 und Brom entsteht die entsprechende Bromoverbindung. Nach den Röntgenstrukturanalysen kristallisieren beide Verbindungen isotyp in der Raumgruppe P1. Die Anionen können als Assoziate aus je zwei Se2X2-Molekülen und zwei X--Ionen aufgefaßt werden, unter Ausbildung eines Se4X2-Sesselringes; an jedes X--Ion ist noch ein AsX3-Molekül angelagert (X = Cl, Br).
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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