Solvothermal synthesis and crystal structures of two new copper(II) terephthalates |
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| Authors: | Yang Bing-Ping Zeng Hui-Yi Mao Jiang-Gao Guo Guo-Cong Huang Jin-Shun Dong Zhen-Chao |
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| Institution: | (1) State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, P.R. China;(2) National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki, 305-0047, Japan |
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| Abstract: | Two new copper(II) complexes, Cu2(bipy)2(H2O)3(tp)(NO3)](NO3) · H2O (1) and Cu2(bipy)2(tp)2(H2O)]
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(2), (tp = terephthalato, bipy = 2,2 -bipyridine), have been synthesized and their crystal structures determined by single-crystal X-ray diffraction methods. Complex (1) contains a non-coordinated nitrate anion and an asymmetric binuclear cation in which each copper ion has a distorted square pyramidal coordination geometry with the axial Cu—O distance elongated. The crystal structure of (2) features a zigzag 1D polymeric chain along the diagonal axis of the (0 0 1) plane. Tp adopts two types of coordination mode. In the first mode, both carboxylate groups are unidentate, as in complex (1). In addition to the first mode, the tp ligand in complex (2) also adopts the second coordination mode, in which one carboxylate group is unidentate and the other is bidentately chelating with a copper(II) ion. The magnetic properties of complex (2) have also been studied. |
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