P. T. Brain, D. Rankin, H. Robertson
Jun 1, 1994
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0
Influential Citations
7
Citations
Journal
Inorganic Chemistry
Abstract
The structure of gaseous 1-(difluoroboryl)pentaborane(9), 1-(F 2 B)B 5 H 8 , has been determined by electron diffraction. The results confirm that the molecule consists of a pentaborane(9) cage substituted at the apical boron atom, B(1), by a difluoroboryl group; the BF 2 moiety is free to rotate about the exo B-B bond. Salient structural parameters (r a ) are r(B-B)(base-base)=181.2(6), r(B-B)(base-apex)=170.6(4), r(B-B)(apex-exo)=167.6(7), r(B-F)= 132.2(3), r(B-H t )=1 19.5(13), and r(B-Hb)=138.9(11) pm; FBF=1 15.4(6) o , B-H t «rise» (above basal plane) =1.9(33) o , and B-Hb «dip» (below basal plane)=67.7(29) o