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均氧配位的双核镁配合物[Mg_2(μ-OH_2)_2(H_2O)_4(OPCy_3)_4]Cl_4(英文) 被引量:1

Homoleptic Oxygen-coordinative Binuclear Magnesium Complex [Mg_2(μ-OH_2)_2(H_2O)_4(OPCy_3)_4]Cl_4
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摘要 氯化镁与三(环己烷基)膦氧在乙醇溶液中反应生成了化合物[Mg2(μ-OH2)2(H2O)4(OPCy3)4]Cl4。单晶X-射线衍射分析表明:其结构是由1个单一均氧配位的双核镁配合物阳离子与4个氯阴离子组成,2对氯离子参与形成了分子间的Cl…O-H氢键,并组成了1个共享的[Mg2O4(μ-O)2]核形成2个相连的高度扭曲立方烷构型,其中每个镁原子与由2个μ-OH2、2个OH2和2个OPCy3中的6个氧原子组成了八面体的配位几何,Mg-O(PCy3),Mg-O(OH)2和Mg-μ-O(OH2)的平均键长分别为1.968(6),2.052(7),2.286(6)。 Abstract: The X-ray diffraction study of the crystals deposited from the solution obtained by the reaction of magnesiumdichloride with tricyclohexylphosphine oxide in ethanol allowed the formulation of the product as [Mg2(μ-OH2)2(H2O)4(OPCy3)4]Cl4(Cy=cyclohexyl).Its structure is built of a homoleptic oxygen-coordinative binuclear magnesium cation complex and four chloride anions. Two pairs of chloride anions participate in intermolecular Cl…O-H bonds, forming two highdistorted cubanes which share a Mg2O4(μ-O)2 core. Each magnesium atom has a coordination oetahedron formed by two μ- OH2, two OH2 and two OPCy3. The average Mg-O(PCy3), Mg-O(OH2) and Mg-μ-O(OH2)bond lengths are 1.968(6), 2.052(7) and 2.286(6) A, respectively.
出处 《安徽工业大学学报(自然科学版)》 CAS 2007年第2期146-149,共4页 Journal of Anhui University of Technology(Natural Science)
基金 安徽省优秀青年科技基金(06046100)
关键词 镁配合物 氧配位 合成 晶体结构 magnesium complex oxygen coordination synthesis crystal structure
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