| η6—芳烃希土有机配合物的合成、结构及性能研究——Ⅰ. Sm(η6—C6H6)(AlCl4)3的合成及晶体结构 |
| STUDY ON THE SYNTHESIS, STRUCTURE AND CHEMISTRY OF η6-ARENE ORGANOLANTHANOID COMPOUNDS Ⅰ. SYNTHESIS AND X-RAY STRUCTURE OF |
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| 摘要: 经过铝粉加热活化的AlCl3与SmCl3在苯中反应,得到了Sm(η6—C6H6)(AlCl4)3·C6H6单晶.其晶体属于三斜晶系,P1空间群,晶胞参数a=9.456(2)Å,b=9.765(3)Å,c=16.776(4)Å,α=96.00(2)°,β=93.76(2)°,γ=111.66(2)°,V=1422.55Å3,Z=2.晶体结构是采用Patterson和Fourier合成法解出的,所有非氢原子的坐标及各向异性热振动参数经块矩阵最小二乘法修正,最后偏离因子R=0.031,Rω=0.035.分子结构中,中心离子Sm(Ⅲ)与六个Cl原子及一个苯环上的六个C原子成键.Sm-C键平均距离2.92Å,Sm-Cl平均距离2.83Å.与希土相连的六个Cl原子,其中之五构成平面五边形,整个分子呈大致的五角双锥形. |
| 关键词: 镧系元素 η6—芳烃配合物 晶体结构 |
| 基金项目: 国家自然科学基金资助项目 |
| Abstract: A new organolanthanoid compound with η6-arene ligand, Sm(η6-C6H6)(AlCl4)3·C6H6 has been prepared by the reaction of activated A1Cl3, aluminum powder and SmCl3 in benzene and its structure has been established by X-ray crystallography. Crystal data: triclinic, space group P1, a=9.456(2)Å, b=9.765(3)Å, c=16.776(4)Å, α=96.00(2)Å, β=93.76(2), γ=111.66(2), V=1422.55Å3, Z=2. The structure was solved by Rant method and block martrix least-square techniques followed by Fourier synthesis for 5008 reflections with I> 3δ(I), R=0.031, Rω=0.053. The central metal atom Sm(Ⅲ)bonds to six chlorine atoms and six carbon atoms in the benzene ring. The average Sm-C distance and Sm-Cl distance arc 2.92Å and 2.83Å, respectively. The coordination polyhedron is a distorted pentagonal bipyrimid with a chlorine atom on an apical position and the benzene ring on the other apical position. |
| Keywords: lanthanoid η6-arene complex crystal structure |
| 投稿时间：1988-05-23 |
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| 范宝臣,沈琪,林永华.η6—芳烃希土有机配合物的合成、结构及性能研究——Ⅰ. Sm(η6—C6H6)(AlCl4)3的合成及晶体结构[J].无机化学学报,1991,7(2):143-147. |
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