11Boron Quadrupole Hyperfine Structure in the Rotational Spectrum of Hydroxydifluoroborane

Abstract

Abstract The 11B quadrupole hyperfine structure in the rotational spectra of three isotopic species of hydroxydifluoroborane, BF2OH, BF2OD, and BF2 18OH has been investigated and the quadrupole coupling constants of these species have been determined. Using the variation of the 11B quadrupole coupling constants with isotopic substitution, it has been possible to evaluate the complete quadrupole coupling tensor, including the off-diagonal element %ab, for each isotopic species.