STERIC EFFECTS IN HETEROBORANES .5. 1-PH-2-ME(3)SI-1,2-CLOSO-C2B10H10

被引：12
|
作者：
MCGRATH, TD [1 ]
WELCH, AJ [1 ]
机构：
[1] HERIOT WATT UNIV,DEPT CHEM,EDINBURGH EH14 4AS,MIDLOTHIAN,SCOTLAND
来源：
ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS | 1995年 / 51卷
关键词：
D O I：
10.1107/S010827019400908X
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The structure of 1-phenyl-2-trimethylsilyl-1,2-dicarba-closo-dodecaborane(12), C11H24B10Si, has been determined crystallographically. The C-cage-C-cage distance is 1.708 (4) Angstrom, only slightly longer than in the 2-methyl analogue. However, in contrast to the 2-methyl and 2-bromo analogues, relief from steric congestion is afforded by a mutual 'bend back' of both the phenyl and trimethylsilyl groups, the latter involving deformation of valency angles both at Si and the C-cage atom to which it is attached.
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页码：651 / 654
页数：4
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