K. Iijima, S. Shibata
Jul 1, 1980
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0
Influential Citations
24
Citations
Journal
Bulletin of the Chemical Society of Japan
Abstract
The molecular structures of trimethylamine-boron trichloride (CH3)3N·BCl3 and trimethylamine-boron tribromide (CH3)3N·BBr3 were determined from gas electron diffraction and vibrational-spectroscopic data. The molecular parameters and their uncertainties for (CH3)3N·BCl3 were rg(B–Cl)=1.836±0.002 A, rg(N–B)=1.652±0.009 A, rg(C–N)=1.497±0.003 A, rg(C–H)=1.107±0.005 A, ∠ClBCl=110.9±0.2°, ∠CNC=108.1±0.3°, while those for (CH3)3N·BBr3 were rg(B–Br)=2.001±0.003 A, rg(N–B)=1.663±0.013 A, rg(C–N)=1.500±0.005 A, rg(C–H)=1.095±0.007 A, ∠BrBBr=110.3±0.3°, ∠CNC=107.8±0.5°. The potential barriers around the N–B bonds in (CH3)3N·BCl3 and (CH3)3N·BBr3 were also estimated to be higher than 18 kcal mol−1 and about 12 kcal mol−1 respectively.