A series of four new copper (II) complexes [Cu (H2L)(L1)] 1,[Cu (H2L)(PMDT)] 2,[Cu (H2L)(Dien)] 3 and [Cu (H2L)(L2)] 4 have been synthesized by template condensation (H2L= thiodiglycolic acid, L1= N-[(1)-1-(4-methylphenyl) ethylidene] benzohydrazide, PMDT= N, N, N′, N′, N′′-pentamethyldiethylene-triamine, Dien= diethylenetriamine L2= N-[(1)-pyridin-2-ylmethylidene] benzohydrazide). The bonding and stereochemistry of ...