CRYSTAL-STRUCTURE AND MAGNETIC-PROPERTIES OF DICYCLOPENTADIENYLHOLMIUM CHLORIDE [(C5H5)2HOCL]2

被引：8
|
作者：
WU, ZZ [1 ]
XU, Z [1 ]
YOU, XZ [1 ]
WANG, HQ [1 ]
ZHOU, XG [1 ]
机构：
[1] ANHUI NORMAL UNIV,INST ORGAN CHEM,WUHU 241000,PEOPLES R CHINA
来源：
POLYHEDRON | 1993年 / 12卷 / 06期
关键词：
D O I：
10.1016/S0277-5387(00)84985-2
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Single crystals of (CP2HoCl)2 (CP = C5H5) were grown from CH2Cl2 solution and studied by X-ray crystallography. The molecule of the title compound is a centrosymmetric dimer with two chloride atoms bridging. The holmium atom is coordinated by two Cp ring centroids and two chloride atoms to form a distorted tetrahedral geometry. The average Ho-Cl and Ho-C(Cp) bond distances are 2.674(5) and 2.60(2) angstrom, respectively. A comparison of some significant structural parameters along the structural series Cp2MCl2 (M = Sc, Ho, Er and Yb) with metal ionic radii was made. The magnetic susceptibility of the title compound has been measured in the range 74-300 K and shows linear Curie-Weiss behaviour with C = 14.3, theta = 1.2 K and mu(eff) = 10.77 B.M. There is no evidence of any magnetic interaction between metal centres.
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页码：677 / 681
页数：5
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