三氯化镨、三氯化钐与15-冠-5配合物的晶体结构

摘要/Abstract

摘要： 用X射线单晶衍射方法测定了PrCl₃·C₁₀H₂₀O₅和SmCl₁₃·C₁₀H₂₀O₅的晶体结构。二者均属单斜晶系,P2_1/c空间群。a=8.167(2)[8.129(7)],b=14.225(3)[14.176(7)],c=14.208(4)[14.117(5)]Å,β=104.78(2)[104.62(5)]°,Z=4。稀土离子的一侧与三个氯,另一侧与五个冠醚氧键合,形成不规则的八配位多面体。Ln-O平均键长为2.606[2.566]Å,Lu-Cl为2.714[2.666]Å,都比配位数高的相应键长短。

Abstract: The crystal structures of PrCl₃·C₁₀H₂₀O₅ and SmCl₃·C₁₀H₂₀O₅ have been determined by X-ray diffraction analysis. The complexes are isomorph, and monoclinic with space group P2_1/c and lattice parameters: a=8.167 (2) [8.129(7)], b=14.225(3) [14.176(7)],c=14.208(4) [14. 117(5)]Å, β=104.78(2)[104.62(5)]°and Z=4.The rare earth ion is bonded to the three chlorine atoms on one side and to five oxygen atoms of the crown ether on the opposite side forming an irregular 8-coordinate polyhedron. Mean bond lengths of Ln-O 2.606[2.566]Å,of Ln-Cl, 2.714[2.666]Å, they are shorter than those in higher coordinate complexes.

胡宁海, 李振祥, 周清廉, 杨秉呼, 金钟声, 倪嘉缵. 三氯化镨、三氯化钐与15-冠-5配合物的晶体结构[J]. 应用化学, 1987, 0(6): 22-26.

Hu Ninghai, Li Zhenxiang, Zhou Qinglian, Yang Binghu, Jin Zhongsheng, Ni Jiazuan. CRYSTAL STRUCTURES OF PrCl₃AND SmCl₃ COMPLEXES WITH 15-CROWN-5[J]. Chinese Journal of Applied Chemistry, 1987, 0(6): 22-26.