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化学学报
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化学学报 ›› 1989, Vol. 47 ›› Issue (12): 1191-1196. 上一篇    下一篇

研究论文

稀土-锂双金属橄合物的研究(LaCl)DMECu~2-Cl)~5(u~3)Cl(La,DME)Li(THF)~2的合成及其晶体结构

李祥高;刘静芝;胡宁海;金钟声;刘国智   

  1. 中国科学院长春应用化学研究所
  • 发布日期:1989-12-15

Study of bimetallic complexes of rare earth-lithium synthesis and crystal structure of the (LaCl)DME(u2-Cl)5(u3-Cl)(La.DME)Li(THF)~2

LI XIANGGAO;LIU JINGZHI;HU NINGHAI;JIN ZHONGSHENG;LIU GUOZHI   

  • Published:1989-12-15

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本文合成了组成为(LaCl)DME(u~2-Cl)~5(u~3-Cl)(La.DME)-Li(THF)~2的新型桥式链状配合物, 并测定了晶体结构。

关键词: 晶体结构测定, 环戊二烯 P, 四氢呋喃, 稀土金属络合物, 双核络合物, 桥环化合物, 锂络合物, 乙二醇甲醚 P

The reaction between LaCl3 and LiCl in THF at room temperature, with hexane as precipitant and glycol di-Me ether (DME) as complexing agent, gave LaCl(DME)(m2-Cl)5(m3-Cl)(La.DME)Li(THF)2. Its structure was studied by single crystal x-ray diffraction technique. The complex belongs to the triclinic space group P1 with a 11.123(3), b 16.564(5), c 8.653(3)8 ? a 95.16(3)8 b 95.63(3), g 74.71(2)? Z = 2, R = 0.0303. The mol. presumes to have a chain conformation in which the La3+ ions are linked by m2- and m3-bridged Cl atoms alternatively. The average bond lengths of La-Cl in m3-chloro-bridge bond and m2-chloro-bridge bond are 2.972 and 2.886 ? resp. The average bond lengths of La-O and Li-O are 2.611 and 1.927 ? resp.

Key words: CRYSTAL STRUCTURE DETERMINATION, CYCLOPENTADIENE P, TETRAHYDROFURAN, RARE EARTH METAL COMPLEX, DINUCLEAR COMPLEX, BRIDGE COMPOUNDS, LITHIUM COMPLEX, ETHYLENE ALCOHOL METHYL ETHER P

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