Tin(IV) complexes obtained by reacting 2-benzoylpyridine-derived thiosemi-carbazones with SnCl4 and diphenyltin dichloride

A. PEREZ REBOLLEDO; G. M. DE LIMA; N. L. SPEZIALI; OSCAR ENRIQUE PIRO; CASTELLANO, EE; J. D. ARDISSON; H. BERALDO

Journal of Organometallic Chemistry

Elsevier

Año: 2006 vol. 691 p. 3919 - 3930

Reaction of 2-benzoylpyridine thiosemicarbazone (H2Bz4DH, HL1) and its N(4)-methyl (H2Bz4Me, HL2) and N(4)-phenyl (H2Bz4Ph, HL3) derivatives with SnCl4 and diphenyltin dichloride (Ph2SnCl2) gave [Sn(L1)Cl3] (1), [Sn(L1)PhCl2] (2), [Sn(L2)Cl3] (3), [H2L2]2+[Ph2SnCl4]2- (4) [Sn(L3)PhCl2] (5) and [Sn(L3)Ph2Cl] (6). Infrared and 1H, 13C and 119Sn NMR spectra of 1–3, 5 and 6 are compatible with the presence of an anionic ligand attached to the metal through the Npy–N–S chelating system and formation of hexacoordinated tin complexes. The crystal structures of 1–3, 5 and 6 show that the geometry around the metal is a distorted octahedron formed by the thiosemicarbazone and either chlorides or chlorides and phenyl groups. The crystal structure of 4 reveals the presence of [H2L2]2+ and trans [Ph2SnCl4]2-.