Eight imidazolate (Im)-bridged heteronuclear complexes containing Cu2+ were prepared For these prepns., the kinetically inert, low spin d2 complexes, [(NH3)5CoIm]2+, [(NH3)5RhIm]2+, and [(en)2Co(Im)2]+ react as ligands with mononuclear Cu2+ complexes. By elemental anal., molar conductivity, TGA, DSC, and reflectance spectroscopy, all bridged heteronuclear complexes were characterized. Imidazolate bridges exist in the heteronuclear complexes. From the ESR spectra of the bridged heteronuclear complexes in solution, the bond parameters of Cu2+ were calculated and nature of the bond discussed.

Key words: IMIDAZOLE P, ZINC COMPLEX, COPPER COMPLEX, CHEMICAL BONDS, NICKEL COMPLEX, ELECTRON SPIN RESONANCE, POLYNUCLEAR COMPLEX, COORDINATE CHEMISTRY, BRIDGE COMPOUNDS