Synthesis and Structural Characterization of Co(Ⅱ) Coordination Polymer [Co(-phth)(imi_)2]_n |
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引用本文: | CHEN Yun,LIU Ping②,LIU Qing-Yan WANG Jian,CHENG Wen-Dan.Synthesis and Structural Characterization of Co(Ⅱ) Coordination Polymer [Co(-phth)(imi_)2]_n[J].结构化学,2003(3). |
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作者姓名: | CHEN Yun LIU Ping② LIU Qing-Yan WANG Jian CHENG Wen-Dan |
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作者单位: | Fujian Institute of Research on the Structure of Matter,The Chinese Academy of Sciences,Fuzhou,Fujian 350002,China |
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基金项目: | Supported by the National Natural Science Foundation of China (29872037),the Natural Science Foundation of Fujian province (C0120002) |
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摘 要: | 1 INTRODUCTION The polymeric metal complexes with extended structures are of great interest because of their useful chemical or physical properties1]. Due to the noticeable fact that the aromatic polycarboxylate can provide versatile coordination mode and the non-coplanar structure of the carboxylate groups and the benzene rings, a lot of efforts in this field have been particularly directed to the preparation of aromatic polycarboxylate (such as phthalate, tere- phthalate and isophthal…
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关 键 词: | cobalt(Ⅱ) complex o-phthalate complex synthesis crystal structure coordination polymer |
Synthesis and Structural Characterization of Co(Ⅱ) Coordination Polymer [Co(-phth)(imi)_2]_n |
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Abstract: | A new cobalt(Ⅱ) complex Co(-phth)(imi)2]n (phth = o-phthalato, imi = imidazole) has been synthesized by the reaction of CoCl2 with disodium o-phthalate and imidazole. The crystal structure of the compound has been determined by single-crystal X-ray diffraction. The crystal is of monoclinic system, space group Pn with a = 8.405(1), b = 9.995(1), c = 9.996(2) ? b = 104.479(2), V = 813.0(2) ?, Dc = 1.467 g/cm3, C14H12N4O4Co, Mr = 359.21, F(000) = 366, m = 1.079 mm-1, Z = 2, R = 0.0483 and wR = 0.1209 for 1583 observed reflections (I > 2s(I)). In the title complex, the Co(Ⅱ) ions are bridged by o-phthalate ligands in a bidentate mode, producing a zigzag infinite chain structure. Each four-coordinated cobalt(Ⅱ) center was coordinated by two oxygen atoms and two nitrogen atoms to give a distorted tetrahedral geometry. The chains are linked by hydrogen bonds between oxygen atoms belonging to carboxylate groups and hydrogen atoms of imidazole molecules, forming an unusual two-dimensional coordination polymer. |
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Keywords: | cobalt(Ⅱ) complex o-phthalate complex synthesis crystal structure coordination polymer |
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