Microwave Spectrum, Barrier to Internal Rotation, Dipole Moment, and Structure of Trifluoromethylphosphine
作者:Irene Y. M. Wang、Chester O. Britt、Alan H. Cowley、James E. Boggs
DOI:10.1063/1.1668716
日期:1968.1.15
The microwave spectra of CF3PH2, CF3PHD, and CF3PD2 have been observed and analyzed. The barrier to internal rotation is 2360 ± 80 cal/mole, approximately 400 cal/mole higher than the barrier in CH3PH2. The dipole-moment components are μa = 1.77 ± 0.01 D, μc = 0.74 ± 0.03 D, and μtotal = 1.92 ± 0.02 D. The structural parameters are rC−P = 1.900 ± 0.006 Å, rP−H = 1.43 ± 0.08 Å, ∠FCF = 108.0 ± 0.4°, ∠CPH 91.9 ± 1.9°, and ∠HPH = 96.7 ± 1.8°. Compared with CH3PH2, the C-P bond is significantly longer, ∠CPH is smaller, and ∠HPH is larger.