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DOI: 10.1039/A705829B (Paper) Reference Section for: J. Chem. Soc., Dalton Trans., 1997, 4549-4554

Telluroether adducts of tin(IV) halides: synthesis, spectroscopy and structures

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Anthony R. J. Genge, William Levason and Gillian Reid

Abstract

The extremely moisture-sensitive [SnX4(Me2Te)2] and [SnX4(ditelluroether)] [X = Cl or Br; ditelluroether = C6H4(TeMe)2-o, MeTe(CH2)3TeMe or PhTe(CH2)3TePh] have been prepared from SnX4 and the tellurium compound in anhydrous dichloromethane. The crystal structures of [SnCl4{C6H4(TeMe)2-o}] and [SnBr4{C6H4(TeMe)2-o}] have been determined; both show distorted-octahedral tin(IV) with the chelating ditelluroether ligand adopting the meso conformation. Variable-temperature 1H, 125Te-{1H} and 119Sn-{1H} NMR studies showed that the complexes undergo rapid ligand exchange in solution. The structures and properties are compared with those of previously described thio- and seleno-ether analogues. Multinuclear NMR spectroscopic studies of mixtures of SiCl4 or GeCl4 and various Group 16 donor ligands in CH2Cl2 solution provided no evidence of adduct formation.

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