Bis(imidazolin-2-iminato) Rare Earth Metal Complexes: Synthesis, Structural Characterization, and Catalytic Application
作者:Alexandra G. Trambitas、Daniel Melcher、Larissa Hartenstein、Peter W. Roesky、Constantin Daniliuc、Peter G. Jones、Matthias Tamm
DOI:10.1021/ic300407u
日期:2012.6.18
Sc, Y, Lu). The molecular structures of all three compounds were established by single-crystal X-ray diffraction analyses. The coordination spheres around the pentacoordinate metal atoms are best described as trigonal bipyramids. Reaction of YbI2 with 2 equiv of LiCH2SiMe3 and 2 equiv of the imino ligand ImDippNH in tetrahydrofuran did not result in a divalent complex, but instead the Yb(III) complex
无水稀土金属卤化物MCl 3与2当量的1,3-双(2,6-二异丙基苯基)咪唑啉-2-亚胺(Im Dipp NH)和2当量的三甲基甲硅烷基甲基锂(Me 3 SiCH 2 Li)在THF中的反应提供了配合物[(Im Dipp N)2 MCl(THF)n ](M = Sc,Y,Lu)。通过单晶X射线衍射分析确定了所有三种化合物的分子结构。最好将五配位金属原子周围的配位球描述为三角双锥。YbI 2与2当量的LiCH 2 SiMe 3和2当量的亚氨基配体Im Dipp反应四氢呋喃中的NH不会生成二价络合物,而是获得了Yb(III)络合物[(Im Dipp N)2 YbI(THF)2 ]并进行了结构表征。用1当量的LiCH 2 SiMe 3处理[(Im Dipp N)2 MCl(THF)n ]导致形成[[Im Dipp N)2 M(CH 2 SiMe 3)(THF)n]。这些化合物在固态金属原子上的配