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.