Synthesis, Reactions and Spectroscopic {UV-Visible, IR, NMR (1H- & 13C-), FAB-MS, TGA and XRD} Studies of New Mercury(II) Complexes Containing Various Mixed Ligand Schiff Bases

A series of new and novel complexes of the types [(Cl)Hg(L)] and [Hg(L)(2)] [where L= Schiff bases; salicylidene-2-methyl-1-aminobenzene (smabH) and vanilidene-1-aminobenzene (vabH)] of mercury(II) have been synthesized by the interactions of mercury(II) chloride with sodium salts of Schiff bases in the presence of THF-MeOH mixture, in 1:1 and 1:2 molar ratio(s) respectively, to produce complexes; [(mu-Cl)(2)Hg-2(smab)(2)] (1), [Hg(smab)(2)] (2), [(mu-Cl)(2)Hg-2(vab)(2)] (3) and [Hg(vab)(2)] (4). Further, complex [(mu-Cl)(2)Hg-2(smab)(2)] (I) has been treated with various aryloxo-, alkoxo-, tetraisopropoxyaluminate, benzoxazolato- and benzimidazolato- salts of sodium in equimolar ratio, to produce new mixed ligand complexes such as, [(mu-OAr)(2)Hg-2(smab)(2)](5), [(mu-OPri)(2)Hg-2(smab)(2)] (6), [{(mu-OPri)(2)Al(OPri)(2)}Hg(smab)] (7), [ {eta(2)-(pbox)} Hg(smab)] (8) and [{eta(2)-(pbz)} Hg(smab)] (9). These complexes have been characterized by elemental analysis (Hg, Cl, C, H & N), melting points and spectral (UV-vis, FT-IR, H-1-, C-13-NMR and FAB-MS) data, whereas the structure of the complexes have been tentatively determined by FAB-MS spectral studies. A thermogravimetric analysis (for complex 4) and X-ray powder diffraction studies (for complex 3) are also reported herein.