Synthesis and physicochemical characterization of some hexacoordinated tin(IV) Schiff base complexes

Abstract

A freshly distilled tin(IV) tetrachloride interacted with sodium salts of Schiff bases in 1:2 molar ratios in a mixture of tetrahydrofuron (THF)-C 6 H 6 produced complexes of the type [SnCl 2 (sb) 2 ], [where sb = Schiff bases; salicylidene-2-aminopyridine (sap H ) (1), salicylidene-2-amino-4-picoline (sapic H ) (2), salicylidene-2-methyl-1- aminobenzene ( o -smab H ) (3), salicylidene-4-methyl-1-aminobenzene ( p -smab H ) (4), salicylidene- 1-aminobenzene (sab H ) (5), salicylidene-3-nitro-1- aminobenzene (snab H ) (6) ]. These complexes are soluble in polar solvents, monomeric, colored solids and characterized by elemental analysis (Sn, Cl, C, H, and N), spectral analysis [infrared and nuclear magnetic resonance ( 1 H, 13 C, and 119 Sn)], and time-of-flight mass spectrometry studies. © 2011 by Walter de Gruyter.