Synthesis, spectral, magnetic and thermal studies on symmetrically substituted metal(II) 1,3,8,10,15,17,22,24-octachlorophthalocyanines

The present paper describes the synthesis and characterization of metal (II) 1,3,8,10,15,17,22,24-octachlorophthalocyanines (MPOCls) of copper (CuPOCl), cobalt (CoPOCl), nickel (NiPOCl) and zinc (ZnPOCl) by using modified Sandmayer's method. The dark green coloured octachloro substituted phthalocyanine derivatives are characterized by various physico-chemical techniques like elemental analysis, magnetic susceptibility, electronic, IR, thermal and powder X-ray diffraction to check the thermal stability, structural integrity and purity. The variation of magnetic moment as a function of field strength indicated the presence of intermolecular co-operative interaction. (C) 2003 Elsevier Ltd. All rights reserved.