Planar, Three-Coordinate Boron Monohydrides Ligated by Bis(3-methylindolyl)methanes
收藏NIAID Data Ecosystem2026-03-09 收录
下载链接：
https://figshare.com/articles/dataset/Planar_Three_Coordinate_Boron_Monohydrides_Ligated_by_Bis_3_methylindolyl_methanes/2564524
下载链接
链接失效反馈官方服务：
资源简介：
Reactions of tris(3-methylindolyl)methane, bis(3-methylindolyl)-2-methoxyphenylmethane,
and bis(3-methylindolyl)phenylmethane with THF·BH3 result in hydrogen elimination and yield the corresponding boron
monohydride complexes (3-CH3C8H4NH)HC(3-CH3C8H4N)2BH (6), (2-CH3OC6H4)HC(3-CH3C8H4N)2BH (7), and
PhHC(3-CH3C8H4N)2BH (8), respectively. Compositions and structures were confirmed
by NMR (1H, 11B, 13C) and IR spectroscopy,
elemental analysis, and X-ray crystallography. The molecular structures
of 6–8 each possess a trigonal-planar
boron atom which resides in the plane of a bidentate diindolylmethane
ligand. This planarity, the lack of Lewis acid–base complexation
in the presence of THF, and the short B–N distances suggest
significant N→B π donation. Thermolysis of 6 did not produce the three-coordinate, pyramidal borane HC(3-CH3C8H4N)3B or a tripodal, four-coordinate
acid–base complex, presumably due to the significant B–N
π bonding in 6. The planarity of 6–8 and the isoelectronic relationship of BH to
C: suggest that diindolylmethanes may be useful platforms for the
preparation of a new family of N-heterocyclic carbenes.
创建时间：
2016-02-22
