Crystal structures of di­aquadi-μ-hydroxido-tris­tri­methyl­tin(IV) diformatotri­methyl­stannate(IV) and di-μ-hydroxido-tris­tri­methyl­tin(IV) chloride monohydrate

摘要

The title compounds, [Sn3(CH3)9(OH)2(H2O)2][Sn(CH3)3(CHO2)2] (>1) and [Sn3(CH3)9(OH)2]Cl·H2O (>2), are partially condensed products of hydrolysed tri­methyl­tin chloride. In the structures of >1 and >2, short cationic tris­tannatoxanes (C9H₂₉O₂Sn₃) are bridged by a diformatotri­methyl­tin anion or a chloride anion, respectively. Hydrogen bridges are present and supposedly stabilize these structures against further polymerization to the known polymeric tri­methyl­tin hydroxide. Especially noteworthy is that the formate present in this structure was formed from atmospheric CO₂.