Organotin biocides. Part 8. The crystal structure of triphenyltin formate and a comparative variable-temperature tin-119 Mössbauer spectroscopic study of organotin formates and acetates

Abstract

The structure of triphenyltin formate has been determined by an X-ray study. Crystal data: monoclinic, space group B2₁/a, a= 20.176(8), b= 15.539(6), c= 21.952(10)Å, β= 90.30(6)°, Z= 16. The geometry about tin is trigonal bipyramidal with a trans-O₂SnR₃ stereochemistry (R = Ph), leading to a chain polymeric structure for the lattice. The geometric distortions which accompany polymer formation are assessed, and used to interpret variable-temperature Mössbauer spectroscopic data for triphenyl-, tricyclohexyl-, and trimethyl-tin formates and acetates.