Formation and reactions of the (trifluoromethyl)tin bromides CF3SnBr3 and (CF3)2SnBr2

Article abstract of DOI:10.1021/ic50205a006

The formation of CF₃SnBr₃ and (CF₃)₂SnBr₂ from the reaction of (CF₃)₂Hg and SnBr₄ at temperatures of 112, 121, and 130°C has been followed in a semikinetic manner. The data indicate that the (trifluoromethyl)tin bromides are easily formed in reactions that proceed to equilibria, but the decomposition of more fully substituted species, e.g., (CF₃)₃SnBr, is almost immediate and severely limits the temperature range that can be utilized. The methylated compounds CF₃Sn(CH₃)₃ and (CF₃)₂Sn(CH₃)₂ are easily formed in high yield. The latter reacts with excess Cd(CH₃)₂ to yield CF₃Sn(CH₃)₃ while the former reacts with CH₃Li to yield Sn(CH₃)₄. The formation of an unstable hydride, CF₃SnH₃, is also demonstrated.