Crystal structures of diaquadi-μ-hydroxido-tris[trimethyltin(IV)] diformatotrimethylstannate(IV) and di-μ-hydroxido-tris[trimethyltin(IV)] chloride monohydrate

Abstract

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 of1and2, 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.