Abstract
Several Cu(II) complexes coordinated to imidazole (IMDAH) and benzimidazole (BIMDAH) ligands have been isolated as powdered solids. Compounds prepared are Cu(BIMDAH) 4Cl 2, Cu(IMDAH) 4Cl 2, Cu(BIMDAH) 2Cl 2, Cu(IMDAH) 2Cl 2 and Cu(BIMDA) 2 (BIMDA = deprotonated form of BIMDAH ligand). These compounds have been characterized by elemental analysis, and by diffuse reflectance Fourier Transform and X-ray photoelectron spectroscopy. The results show that Cu(BIMDAH) 4Cl 2 and Cu(IMDAH) 4Cl 2 are formed as discrete mononuclear complexes in which the ligands are coordinated in a monodentate fashion. In contrast, the Cu- (BIMDAH) 2Cl 2 and Cu(IMDAH) 2Cl 2 complexes are formed as polymeric species. The Cu(BIMDA) 2 complex also forms a polymeric structure with the ligands coordinated in a bidentate manner. X-ray photoelectron data illustrates that the surface composition of each of these complexes closely resembles that of the bulk material.
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