Synthesis characterization and biological study of diorganotin(IV) complexes of monomethyl phthalate

The synthesis and characterization of new coordination compounds of some organotin(IV) chlorides with monomethyl phthalate is reported; the ligand molecules appear to be bound to the tin atom through carbonyl oxygen atoms. Their structures have been characterized by elemental analyses, molar conductance, and bonding in these complexes is discussed in terms of their IR, H-1, C-13, Sn-119 NMR and Sn-119m Mossbauer spectral studies. The spectroscopic results obtained are in full agreement with the proposed 2:1 stoichiometry. The complexes soluble in DMSO have been screened against a wide spectrum of bacteria and the results obtained are quite promising. The LD50 values have also been determined in the albino rats. Some of the complexes also exhibit high anti-inflammatory activity. (c) 2005 Elsevier B.V. All rights reserved.