Synthesis,Molecular Structure,and Isomerisation in Solution of (Me3SbS)2Me2SnCl2. Concomitant Hypercoordination of Tin and Antimony

The reaction of Me₃SbCl₂ and (Me₂SnS)₃ afforded the complex (Me₃SbS)₂Me₂SnCl₂ in high yields, whose molecular structure features both hypercoordinated tin and antimony atoms. In solution, (Me₃SbS)₂Me₂SnCl₂ undergoes a reversible dissociation and ligand interchange reaction to give Me₃SbS, Me₃SbCl₂ and (Me₂SnS)₃.