MICROWAVE SPECTRUM STRUCTURE BORON QUADRUPOLE COUPLING CONSTANTS AND DIPOLE MOMENT OF DIFLUOROBORANE

The microwave spectra of H10BF2, H 11BF2, D10BF2, and D 11BF2 have been assigned. Rotational constants are 74494.82, 10496.74, and 9181.67 Me/sec for H11BF2; 77 244.25, 10 495.35, and 9221.49 Me/sec for H10BF2; 52896.09, 10498.29, and 8740.46 Me/sec for D11BF2; and 54 081.82, 10 496.89, and 8771.57 Me/sec for D10BF2. The structural parameters obtained from these constants and their estimated uncertainties are rBH=1.311±0.005 Å, r BH=1.189±.010 Å, and ∠FBF=118.3°±1°. The quadrupole coupling constants have been obtained. The dipole moment is 0.971±0.010 D. Copyright © 1968 by the American Institute of Physics.