Abstract
Synthesis and characterization of the complexes of Sn(II) and Sn(IV) with the Schiff bases derived by the condensation of salicylaldehyde with various sulfa drugs are described. These complexes are monomeric and non-electrolytic. The electronic, infrared and proton magnetic resonance spectra show the bonding between phenolic oxygen and azomethine nitrogen of the Schiff base to the central tin atom. The geometry around the central metal atom is discussed on the basis of Mössbauer spectral studies.