Reactions of selected methyl tin (IV) and-germanium(IV) halides in anhydrous HF, HSO3F and HSO3CF3

Autor: Friedhelm Aubke, S. T. Tomic, S.P. Mallela, H.A. Carter, S. Lee, S. Karunanithy, John R. Sams
Rok vydání: 1989
Předmět:
Zdroj: Journal of Fluorine Chemistry. 44:309-328
ISSN: 0022-1139
DOI: 10.1016/s0022-1139(00)83948-2
Popis: Acidolysis in HSO 3 F or HSO 3 CF 3 of either tetramethylgermane or trimethylchlorogermane leads, depending on reaction conditions, to (CH 3 ) 3 GeSO 3 X or (CH 3 ) 2 Ge(SO 3 X) 2 with X = F or CF 3 . All compounds are obtained as colorless liquids with tetracoordinated germanium and monodentate sulfonate groups. The compounds are characterized by 19 F - and 1 H - NMR and vibrational spectra. All but (CH 3 ) 2 Ge(SO 3 F) 2 are obtained in analytically pure form. Dimethyltin(IV) fluoride is found to act as an ampholyte in anhydrous HF as evidenced by the isolation of Li 2 [(CH 3 ) 2 SnF 4 ], K[(CH 3 ) 2 SnF 3 ] and a material of the composition (CH 3 ) 2 SnTaF 7 . Vibrational and 119 Sn Mossbauer spectra are reported and discussed. Tin is found to be hexacoordinated in all compounds with linear or nearly linear C - Sn - C groups.
Databáze: OpenAIRE