Synthesis and structure of aminobis(η1-cyclopentadienyl)boranes and related compounds
作者:Holger Braunschweig、Carsten von Koblinski、Melanie Neugebauer、Ulli Englert、Xiaolai Zheng
DOI:10.1016/s0022-328x(00)00742-7
日期:2001.1
Amino(diorganyl)boranes of the type R2NB(η1-CxHy)2 R=various ligands, CxHy=C5H5 (cyclopentadienyl), C9H7 (indenyl), C13H9 (fluorenyl) were recently reported as ligands in corresponding [1]borametallocenophanes of the Group IV metals Ti, Zr, and Hf. Several of those ligands including bis(cyclopentadienyl)boranes, cyclopentadienyl(indenyl)boranes, and difluorenylboranes such as iPr2NB(η1-C5H5)2 (7),
氨基(二有机)所述类型R的硼烷2 NB(η 1 -C X ħ Ý)2 R =各种配体,C X ħ Ŷ = C 5 H ^ 5(环戊二烯基),C 9 H ^ 7(茚基),C 13 H ^最近报道了9(芴基)作为IV族金属Ti,Zr和Hf的相应[1]硼金属茂中的配体。几个那些配体,包括双(环戊二烯基)硼烷,环戊二烯基(茚基)硼烷和difluorenylboranes如我镨2 NB(η 1 -C 5 ħ5)2(7),我镨2 NB(η 1 -C 5 ħ 5)(η 1 -C 9 ħ 7)(12),和Me 2 NB(η 1 -C 13 ħ 9)2(13)获得了非常高的收率,并具有完整的特征。除13以外的所有化合物均显示出不同结构异构体的预期存在。选择化合物7作为代表性实例,以通过NMR方法分配所有异构体。12的结构通过X射线衍射法测定了1种异构体(一种异构体)和13种固态。