Synthesis and magnetism of 6-nitrobenzimidazolate and imidazolate-bridged copper(II) complexes |
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| Authors: | Zong-Hui Jiang Chao-Li Deng Dai-Zheng Liao Shi-Ping Yan Geng-Lin Wang |
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| Institution: | (1) National Laboratory of Elemento-Organic Chemistry, Department of Chemistry, Nankai University, Tianjin, China;(2) Present address: Department of Chemistry, Zhengzhou Light Industry College, Zhengzhou, Henan, China |
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| Abstract: | Summary Four new trinuclear copper(II) complexes, Cu(phen)-(NBzIm)] (ClO4) (1), Cu(bpy)(NBzIm)](ClO4) (2), Cu-(Me2-bpy)(NBzIm)](Ac)·1/2H2O (3) and Cu(Me2-bpy)-(Im)](ClO4)·1/2H2O (4) (phen = 1, 10-phenanthroline, bpy = 2,2 -bipyridine, NBzIm = 6-nitrobenzimidazolate ion, Im=imidazolate ion) have been prepared and characterized by variable temperature magnetic susceptibility measurements. A weak antiferromagnetic spin exchange interaction operates between copper(II) ions, exchange integrals evaluated as J =-23.82 cm-1 for (1); and J=-21.91 cm-1 for (2). |
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