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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 618 (1992), S. 83-88 
    ISSN: 0044-2313
    Keywords: Pentafluoro tellurate(IV) ; pentafluoroselenateIV ; (dimethylamino)-methyl-trimethylammonium cation ; crystal structure ; weak fluorine interactions ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reaction of Telluriumhexafluoride and Trimethylamine, Structures of the TeF5- and SeF5- AnionsThe reaction of TeF6 and (CH3)3N is of the redox kind, resulting in reduction of tellurium: X-ray single crystal analysis reveals the compounds (CH3)2N—CH2—N(CH3)2+TeF5- and [(CH3)3NH+]5(TeF5-)3(HF2-)2. By comparison with published data it can be shown that this mixture is identical to previously published [(CH3)3N]2TeF6. The latter was supposed to be one of the few examples of tellurium in a coordination state of eight. (CH3)4N+TeF5- and (CH3)4N4SeF5- are obtained and their structure is investigated by single crystal x-ray methods also. The anions SF5-, SeF5- and TeF5- are discussed in terms of weak interactions.
    Notes: Die Reaktion von TeF6 mit (CH3)3N ist eine Redoxreaktion, Tellur(VI) wird von Trimethylamin zu Tellur(IV) reduziert: Mittels der Kristallstrukturanalyse werden die Produkte (CH3)2N—CH2-N(CH3)3+TeF5- und [(CH3)3NH+]5(TeF5-)3(HF2-)2 nachgewiesen. Durch Vergleich mit publizierten Daten kann die Existenz von [(CH3)3N]2TeF6 mit achtfach koordiniertem Tellur widerlegt werden. Am (CH3)4N+SeF5- wird erstmals das SeF5--Anion strukturanalytisch und im Vergleich mit SF5- und TeF5- im Hinblick auf schwächere Wechselwirkungen untersucht.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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