Copper(II) complexes of 4-acetamidobenzaldehyde N(4)-substituted thiosemicarbazones

Mononuclear and binuclear copper(II) complexes with four 4-acetamidobenzald ehyde N(4)-substituted thiosemicarbazones have been prepared in EtOH soluti on and characterized by physical and spectral methods. I.r., electronic, an d e.s.r. spectra of the complexes, as well as i.r., electronic, and n.m.r. spectra of the thiosemicarbazones, have been obtained. These thiosemicarbaz ones coordinate as anionic or neutral ligands via the thiosemicarbazone moi ety's imine nitrogen and thiolate/thione sulfur, the former on loss of the hydrazido hydrogen, N(2)H.