Synthesis and Crystal Structure of Bis(cyclopentadienyl) Ytterbium Complex Supported by β-Diketiminate  

作　　者：XUE Ming-Qiang YAO Ying-Ming SHEN Qi YU Kai-Bei 

机构地区：[1]College of Chemistry and Chemical Engineering, Suzhou University, Suzhou 215006, China [2]Chengdu Institute of Organic Chemistry, The Chinese Academy of Sciences, Chengdu 610041, China

出　　处：《Chinese Journal of Structural Chemistry》2006年第2期139-142,共4页结构化学（英文）

基　　金：Supported by the National Natural Science Foundation of China (20072027)

摘　　要：Treatment of the β-diketiminate-supported ytterbium dichloride LYbCl2（THF）2 1 （L = N,N＇-bis（2,6-dimethylphenyl）-2,4-pentanediiminate） with 2 equiv of C5H5Na gave rise to the title complex LYb（C5H5）2 2 （C31H35N2Yb, Mr = 608.65）, and its crystal structure was determined by single-crystal X-ray diffraction. The crystal belongs to monoclinic, space group P2 1/n with a = 14.417（2）, b = 10.432（2）, c = 18.040（4） ,A°, β= 95.73（2）°, V= 2699.6（9） ,A°, Dc = 1.498 g/cm^3, Z = 4, 2（MoKa） = 0.71073 ,A°,μ = 3.485 mm^-1, F（000） = 1220, the final R = 0.0304 and wR = 0.0703 for 3962 observed reflections with I 〉 2σ（I）. In the molecular structure of the title complex, the central metal atom Yb is eight-coordinated by two cyclopentadienyl groups and two nitrogen atoms of ,β- diketiminate group to form a distorted tetrahedral geometry.Treatment of the β-diketiminate-supported ytterbium dichloride LYbCl2（THF）2 1 （L = N,N＇-bis（2,6-dimethylphenyl）-2,4-pentanediiminate） with 2 equiv of C5H5Na gave rise to the title complex LYb（C5H5）2 2 （C31H35N2Yb, Mr = 608.65）, and its crystal structure was determined by single-crystal X-ray diffraction. The crystal belongs to monoclinic, space group P2 1/n with a = 14.417（2）, b = 10.432（2）, c = 18.040（4） ,A°, β= 95.73（2）°, V= 2699.6（9） ,A°, Dc = 1.498 g/cm^3, Z = 4, 2（MoKa） = 0.71073 ,A°,μ = 3.485 mm^-1, F（000） = 1220, the final R = 0.0304 and wR = 0.0703 for 3962 observed reflections with I 〉 2σ（I）. In the molecular structure of the title complex, the central metal atom Yb is eight-coordinated by two cyclopentadienyl groups and two nitrogen atoms of ,β- diketiminate group to form a distorted tetrahedral geometry.

关 键 词：YTTERBIUM β-diketiminate ligand crystal structure synthesis 

分 类 号：O614.346[理学—无机化学] O641.4[理学—化学]