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  • 1
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Preparation, Mössbauer and Vibrational Spectra of the Complexes [SnCl4F]⊖, [SnCl4(NCS)]⊖, and [SnCl4(NCS)2]2⊖N(CH2)4F and N(CH2)4SCN react in liquid SO2 with SnCl4 yielding the adducts [N(CH3)4][SnCl4F] (I), [N(CH3)4][SnCl4(NCS)] (II) and [N(CH3)4]2[SnCl4(NCS)2] (III).respectively. Mössbauer and vibrational spectra indicate for the anion of I a fluoro-bridged species, which is probably tetrameric like the isoelectronic SbCl4F. For II dimeric moieties are proposed with bridging S-atoms, while [SnCl4(NCS)2]2⊖ has an octahedral structure with N-bonded isothiocyanate groups in the trans-positions.
    Notes: Durch Umsetzung von Tetramethylammonium-fluorid bzw. -thiocyanat mit Zinntetrachlorid in flüssigem Schwefeldioxid entstehen die Addukte [N(CH3)4]·[SnCl4F] (I), [N(CH3)4][SnCl4(NCS)] (II) bzw. [N(CH3)4]2[SnCl4(NCS)2] (III). Nach den Ergebnissen der Mössbauer- und Schwingungsspektren bildet das zu SbCl4F isoelektronische Anion [SnCl4F]⊖ wie dieses eine über Fluorobrücken assoziierte, tetramere Struktur. Während das Anion von II ein über S-Brücken verknüpftes Dimeres darstellt, befinden sich bei III die NCS-Liganden N-gebunden in trans-Stellung zueinander.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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