Synthesis,crystal structures and properties of two copper(II) 2-aminomethylbenzimidazole complexes |
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Authors: | He Yi Kou Hui-Zhong Wang Ru-Ji Li Yadong Xiong Ming |
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Affiliation: | (1) Department of Chemistry, Tsinghua University, Beijing, 100084, P.R. China;(2) Geosciences Labs, China University of Geosciences, Beijing, 100083, P.R. China |
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Abstract: | ![]() Two new CuII complexes, [Cu(Hambi)2(ClO4)2] and [Cu(Hambi)2(dca)2] (Hambi = 2-aminomethylbenzimidazole) have been prepared and characterized by X-ray diffraction, electronic paramagnetic resonance (e.p.r.) and i.r. analyses. Both complexes exhibit an elongated octahedral coordination environment with two Hambi ligands situated at the equatorial positions in a trans fashion [Cu—N bond distances range from 1.940(9) to 2.031(9) Å]. In the second complex, a new coordination mode, in which dicyanamide coordinates to copper(II) as a monodentate ligand with the amide nitrogen atom, was observed. |
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