[Cp_2ErCl(THF)]_2的晶体结构 |
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引用本文: | 金玑洙 金钟声. [Cp_2ErCl(THF)]_2的晶体结构[J]. 结构化学, 1992, 11(3): 204-207 |
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作者姓名: | 金玑洙 金钟声 |
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作者单位: | 中国科学院长春应用化学研究所,中国科学院长春应用化学研究所,中国科学院长春应用化学研究所 长春 130022,长春 130022,长春 130022 |
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摘 要: | 本文报导了(Cp_2ErCl(THF)]_2的晶体结构,晶体属单斜晶系,P2_1/c空间群。晶胞参数为a=8.141(2),b=21.218(6),c=8.597(2),β=107.77(2)°;V=1414.1(6) ~3;Z=2,D_c=1.90g/cm~3,F(000)=780,μ_c=66.3cm~(-1)(MoK_a)。最终的偏离因子R=0.047,R_(to)=0.048。结构分析表明,该配合物是以两个氯离子与金属离子桥联的二聚体形式存在。四氢呋喃中的氧原子同金属离子键合,Er—O键长为2.490(6),两个环戊二烯中的所有碳原子同金属离子间的平均键长为2.649,Er-Cl=2.666(3),Er—Cl-a=2.797(3),Er-Er_a=4.42,Cl-Er-Cl_a键角为72.2°。
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关 键 词: | Cp 氯 二聚体 晶体结构 THF 铒 |
Crystal Structure of [Cp_2ErCl(THF)]_2 |
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Abstract: | The crystal and molecular structure of [Cp2ErCl(THF)]2 is reported herein. The complex crystallized in the monoclinic space group P21/c with 0 = 8. 141(2), 6 = 21. 218(6), c=8. 597 (2)(?), β= 107. 77(2)°; V = 1414. 1(6)(?)3; Z = 2, Dc= 1. 90g/cm3, F(000) = 780, μc= 63. 2cm-1. The final factors R = 0. 047 and Rw = 0. 048. The structure revealed that the complex is dimer. The atom O of THF is bonded to Er3+, and the bond length of Er -O is 2. 490(6) (?). All carbon atoms of cyclopentadienyl are bonded to Er3+ , the average bond length of Er -C is 2. 649(?) The bond lengths of Er -Cl and Er -Gla are 2. 666(3) and 2. 797(3) (?) . respectively. The distance of Er -Era is 4. 42(?). the bond angle of Cl-Er -Cla is 72. 2°. |
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