Synthesis and characterization of novel binuclear chromium(III) complexes bridged by aromatic heterocyclic compounds

Two novel types of binuclear bis(acetylacetonato)chromium(iii) complexes bridged by imidazole-4,5-dicarboxylate, 1,2,3-triazole-4,5-dicarboxylate and pyrazole-3,5-dicarboxylate and a binuclear complex bridged by both pyrazolate and hydroxide ligands were prepared and characterized by elemental analysis and positive-ion fast atom bombardment mass spectrometry. Their spectroscopic and magnetic properties were examined by means of luminescence, H-2 NMR and magnetic susceptibility measurements.