Stereochemistry, structural and models of novel 5-(4′-derivatives phenyldiazo)-3-phenyl-2-thioxo-4-thiazolidinone complexes

Abstract Copper(II) and cadmium(II) complexes of 5-(4′-derivatives phenyldiazo)-3-phenyl-2-thioxo-4-thiazolidinone (HL n ) were prepared, their compositions and physicochemical properties were characterized by elemental analysis, magnetic suseptibility measurements, and infrared, electronic spectra. The novel complexes have the stoichiometric formulae [Cu(HL n )(OAc) n (H 2 O)(X)] (OAc=acetate, X=H 2 O or acetate) and [Cd(L)(OAc)(H 2 O)], respectively. Elemental analysis and IR spectra denote, that two types of complexes with different octahedral and tetrahedral structure for Cu(II) and Cd(II) ions. I.R. spectra show that the ligand is monobasic/neutral bidentate forming thereby a six-membered chelating ring and concomitant formation of an intramolecular hydrogen bond. The stoichiometeries of these complexes were determined conductometrically and indicated the formation of 1:1 and 1:2 (metal:ligand) complexes.