Crystal structure and mass spectrometry of dibromodimethyl[1-methyl-2(3H)-imidazolinethione-S]tin(IV)

Abstract

The structure of Sn(CH₃)₂Br₂·C₄H₆N₂S [C₄H₆N₂S = 1 -methyl-2(3H)-imidazolinethione] consists of trigonal-bipyramidal molecules held together in pairs by two N–H ⋯ Br hydrogen bonds. The ligand is bonded to the metal through the sulphur atom. The bromine atoms occupy apical positions with a greater Sn–Br bond length for the hydrogen-bonded atom. The mass spectra of Sn(CH₃)₂Br₂·C₄H₆N₂S and Sn(CH₃)₂Cl₂·C₄H₆N₂S show a much lower tendency for the bromine complex to form ions containing the deprotonated ligand through elimination of hydrogen halide.