两个由双咪唑基配体构筑的镉配合物的合成、晶体结构及理论计算 |
Syntheses, Crystal Structures and Theoretical Calculation of Two Cadmium(Ⅱ) Complexes Assembled by Bis(imidazol) Ligands |
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摘要: 通过水热法合成了2个新的金属-有机配位聚合物[Cd(nba)2(mbix)]2(1)和[Cd((bib)2Br2]n(2)(Hnba=4-硝基苯甲酸,mbix=1,3-双(咪唑基-1-基)苯,bib=1,4-双(咪唑基-1-基)丁烷),并对其进行了元素分析、红外光谱、荧光光谱、单晶和粉末X射线衍射测定。配合物1为零维结构,并通过π-π堆积形成了三维超分子结构;配合物2为具有(4,4)拓扑的二维网状结构。此外,还用高斯03程序PBE0/LANL2DZ方法对配合物1和2进行了自然键轨道(NBO)分析,计算结果表明配位原子与Cd(Ⅱ)离子之间存在着共价作用。 |
关键词: 水热合成 晶体结构 镉配合物 自然键轨道 |
基金项目: 吉林省科技发展计划(No.2015052006JH)资助项目 |
Abstract: Two new complexes[Cd(nba)2(mbix)]2 (1) and[Cd((bib)2Br2]n (2) (Hnba=4-nitrobenzoic acid, mbix=1,3-bis(imidazol-1-ylmethyl)benzene, bib=1,4-bis(imidazol-1-yl)-butane) have been hydrothermally synthesized and structurally characterized by elemental analysis, IR spectrum, fluorescence spectrum, single-crystal and powder X-ray diffraction. Complex 1 exhibits zero-dimensional framework and display three-dimensional supramolecular network via π-π stacking interactions. Complex 2 shows 2D network with (4,4) topology. Moreover, we analyzed natural bond orbital (NBO) of 1 and 2 by the PBE0/LANL2DZ method built in Gaussian 03 Program. The calculation results show the obvious covalent interaction between the coordinated atoms and Cd(Ⅱ) ions. |
Keywords: hydrothermal synthesis crystal structure cadmium complex natural bond orbital |
投稿时间:2019-01-16 修订日期:2019-04-24 |
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李秀梅,潘亚茹,刘博,周实.两个由双咪唑基配体构筑的镉配合物的合成、晶体结构及理论计算[J].无机化学学报,2019,35(7):1275-1282. |
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