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作 者:石智强[1] 季宁宁[2] 何国芳[1] 韩银锋[2]
机构地区:[1]泰山学院材料与化学工程系,泰安271021 [2]泰山学院化学与环境科学系,泰安271021
出 处:《无机化学学报》2011年第8期1507-1512,共6页Chinese Journal of Inorganic Chemistry
基 金:山东省中青年科学家科研奖励基金(No.BS2009CL048);泰安市科技发展计划(No.20081009)资助项目
摘 要:以醋酸铜、邻氯苯甲酸(o-CBA)和2,2′-联吡啶(2,2′-bipy)为原料在甲醇水介质中通过水热反应,合成了1个新的五配位的双核铜髤配合物[Cu(o-CBA)2(2,2′-bipy)]2,用元素分析、红外光谱和热重分析对配合物进行了表征。X-射线单晶衍射表明,配合物属正交晶系,空间群Pbca,晶胞参数:a=2.0460(4)nm,b=1.0065(2)nm,c=2.1601(4)nm,V=4.4483(15)nm3,Z=4,Dc=1.585 g.cm-3,R1(I>2σ(I))=0.038 6,wR2(I>2σ(I))=0.080 2。配合物中2个铜髤离子通过2个桥连邻氯苯甲酸配体形成了1个双核结构,Cu(1)…Cu(1A)距离为0.343 27(8)nm。配合物中每个铜髤离子均分别与来自1个2,2′-bipy的2个氮原子和3个邻氯苯甲酸根的3个氧原子配位,形成变形的四方锥结构。该配合物通过分子间弱的C-H…O氢键和C-H…π作用形成了一维链状结构。对配合物中[Cu(o-CBA)2(2,2′-bipy)]结构单元进行了量子化学计算。A new binuclear copper(Ⅱ) complex [Cu(o-CBA) 2(2,2′-bipy)] 2(o-CBA=o-chlorobenzoic acid,2,2′-bipy= 2,2′-bipyridine) was hydrothermally synthesized by the reaction of cupric acetate monohydrate with o-CBA and 2,2′-bipy in the solvent mixture of methanol and water.The tiltle complex was characterized by elemental analysis,IR spectra and TG.Its crystal structure was determined by X-ray single crystal diffraction study.The crystal belongs to orthorhombic with space group Pbca,a=2.046 0(4) nm,b=1.006 5(2) nm,c=2.160 1(4) nm,V= 4.448 3(15) nm 3,Z=4,D c =1.585 g·cm-3,R 1(I2σ(I))=0.038 6 and wR 2(I2σ(I))=0.080 2.The crystal structure shows that two neighboring copper(Ⅱ) ions are linked together by two bridging o-chlorobenzoic acid,forming a binuclear structure.The Cu(1)…Cu(1A) bond distance is 0.343 27(8) nm.Each copper(Ⅱ) ion is coordinated with two nitrogen atoms from one 2,2′-bipy and three oxygen atoms from three o-CBA,forming a distorted square-pyramidal configuration.Weak intermolecular C-H … O hydrogen bonds and C-H … π interactions link the complex into one-dimensional chain.The quantum chemistry calculation on the [Cu(o-CBA) 2(2,2′-bipy)] has been performed by means of G03W package and taking 6-31G basis set.
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