BIOCHEMICALLY RELEVANT COMPLEXES OF COPPER - SYNTHESIS, MAGNETIC AND SPECTRAL STUDIES OF SOME MIXED-LIGAND CHELATES OF BIS(O-HYDROXYACETOPHENONATO)COPPER(II) WITH BENZOTHIAZOLE AND RELATED LIGANDS

A series of novel mixed-ligand complexes of copper(II) of the composit ions [Cu((o) under bar-haph)(2)(L)(2)], where (o) under bar-haphH = (o ) under bar-hydroxyacetophenone end L = benzothiazole, 2-methylbenzoth iazole, 2-(2'-hydroxyphenyl)benzothiazole, 2-(2 '-tolyl)benzothiazole or 2-(3'-tolyl)benzothiazole, and [Cu((o) under bar-haph)(2)(AMBZT)], where AMBZT = 2-aminobenzothiazole, have been prepared by the interact ion of [Cu((o) under bar-haph)(2)] . H2O with the ligands. The compoun ds so obtained ware characterized by analytical data, molar conductanc es, magnetic measurements, electron paramagnetic resonance and infrare d spectral studies. Suitable octahedral structures have been proposed for these complexes.