Y-Al双金属稀土配合物的合成和晶体结构  

SYNTHESIS AND CRYSTAL STRUCTURE OF BIMETALLIC YTTRIUM COMPLEX

作　　者：金鹰泰[1] 林永华[1] 金松春[1] 胡刚[1] 李振祥[1] 张喜田[1] 

机构地区：[1]中国科学院长春应用化学研究所稀土物理化学实验室

出　　处：《应用化学》1989年第6期67-70,共4页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金

摘　　要：稀土化合物和烷基铝反应的研究,不仅对揭示f轨道的本质且对阐明稀土配位催化聚合烯烃的催化剂结构都有重要意义。Grcco等曾报道C₈H₈Ce（μ-O-i-C₃H₇）₂Al（C₂H₅）₂配合物,但尚未见晶体结构数据。 本文介绍了一种新的Y-Al双金属配合物的合成和培养晶体的方法。用四圆衍射仪确定了它的晶体结构,并用¹H NMR、ESCA等方法研究了配合物中钇的价态。The synthesis and growth of crystal of a new bimetallic yttrium complex are presentedin this is paper. The crystal structure of the complex, [(CF_3CO_2)_3YA1(C_2H-5)_2.2THF]_2,was determined by a four circlc diffractometer. The erystals belong to monoclinic systemwith space group P2_(1/n),a=10.173 A,b=18.713 A,c=14.704 A,β=102.318°,V=2734.43 A.Least square refinement has led to a final R of 0.070,R_w=0.064. The Y--O(PF_3CO_2) (THF)average distance 2.323(2.451) A. The Al--O(CF_3CO_2) and Al--C(C_2H_5) distances average1.840,1.998 A respectively. The valence state of the yttrium is discussed based on the dataof ~1H-NMR and ESCA results. The Y-Y bond length indicated that the complex likelybelongs to a cluster compound.

关 键 词：钇-铝配合物 稀土配合物 晶体结构 

分 类 号：O614.33[理学—无机化学]