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(CH₃C₅H₄)₃Ln·THF（Ln=Sm,Ho,Tb,Yb）与环戊二烯生成（C₅H₅）₃Ln·THF的新反应

A Novel Reaction of （CH₃C₅H₄）₃Ln·THF （Ln=Sm, Ho, Tb, Yb） with Cyclopentadiene Forming （C₅H₅）₃Ln·THF

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【Author】 LIU, Tai-Qi ,a,b DING, Fu-Chen a LIN, Yong-Hua b YU, Jian-Xiang a SHI, Qi-Song a SHEN, Qi c ( a School of Materials and Chemical Engineering, Beijing Institute of Petro-chemical Technology, Beijing 102600) ( b Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022) ( c Department of Chemisty, Suzhou University, Suzhou 215007)

【机构】北京石油化工学院材料与化工系；中国科学院长春应用化学研究所；苏州大学化学系北京102600；中国科学院长春应用化学研究所长春130021；北京102600；长春130021；苏州215007；

【摘要】研究了 (CH3 C5H4 ) 3 Ln·THF (Ln =Sm ,Ho ,Tb ,Yb)与环戊二烯高产率生成 (C5H5) 3 Ln·THF的新反应 .反应产物经过了元素分析、质谱和X射线的表征 .产物 (C5H5) 3 Ln·THF的特征结构参数 ,如五元碳环的碳原子与中心金属的平均距离 ,五元碳环质心与中心金属距离 ,配位的四氢呋喃氧原子与中心金属距离 ,由于“镧系收缩现象” ,随着中心原子序数的增加而减小 .更多还原

【Abstract】 A novel reaction of (CH 3C 5H 4) 3Ln·THF (Ln=Sm, Tb, Ho, Yb) with cyclopentadiene obtained (C 5H 5) 3Ln·THF in high yield. The products were characterized by elemental analyses, MS and X-ray diffraction analysis. The data of selected structure parameters of (C 5H 5) 3Ln·THF, such as the average distance between the penta carbon ring and the central metal, the distance between the penta carbon center or the coordinated THF and the central metal, showed that their values decreased with the increase of atomic number. It suggests that these compounds obey the "lanthanide contract" rule.更多还原