摘要:
Six new copper(11) complexes of 2-hydroxyacetophenone-N(4)-phenyl semicarbazone have been synthesized and physico-chemically characterized. The tridentate character of the semicarbazone is inferred from IR spectra. Based on EPR studies, the spin Hamiltonian and bonding parameters have been calculated. The g values, calculated for all the complexes in frozen DMF, indicate the presence of the unpaired electron in the d(x2-y2) orbital. The metal-ligand bonding parameters evaluated showed strong in-plane U and in-plane it-bonding. The structure of the compound, CuLphen has been resolved using single crystal X-ray diffraction studies. The crystal structure revealed a monoclinic lattice with space group symmetry P2(1)/c. The compound adopts a distorted square pyramidal geometry with a N2O2 core as the base. (C) 2006 Elsevier Ltd. All rights reserved.