Improved process for obtaining trihaluros of monohidrocarbil Tin

摘要

A process is provided for preparing monohydrocarbyltin trihalides, RSnX3, wherein R is an alkyl, cycloalkyl, alkaryl, aryl or aralkyl group of 1-24 carbon atoms, and X is a halogen atom by the redistribution reaction between a tetrahydrocarbyltin, R4Sn, a trihydrocarbyltin halide, R3SnX, or a dihydrocarbyltin dihalide, R2SnX2, and a tin tetrahalide, SnX4, in the presence of sulfonium or isothiuronium salts as catalysts.