(2-Acetyl­pyridine-κN 4-phenyl­thio­semicarbazonato-κ2N1,S)­halogeno-trans-di­methyl­tin(IV) (halogeno = chloro and bromo)

A thio­semicarbazone derivative, 2-acetyl­pyridine 4-phenyl­thio­semicarbazone, was prepared and complexed to Lewis acids, Sn(CH3)2X2, X = Cl and Br. The products, [SnX(C14H13N4S)(CH3)2], were characterized by single-crystal X-ray diffraction, and IR, NMR and Mossbauer spectroscopies. They are isomorphous and crystallize in the monoclinic space group P21/n. The structure determination revealed discrete neutral complexes with the SnIV atom in a distorted octahedral coordination geometry, with the halogeno ligand and the thio­semicarbazone derivative in the equatorial plane and the methyl groups in axial positions.