QUADRUPOLE RELAXATION FOR A SPIN I = 3/2: THE F19 N.M.R. SPECTRA OF BF3 AND ClO3F

Abstract
An expression is derived for the broadening of the components of the quartet obtained for the n.m.r. spectrum of nuclei coupled to a nucleus of spin 3/2 undergoing electric quadrupole relaxation. It is shown that the F19 spectra of BF3 and ClO3F at various temperatures may be satisfactorily interpreted by means of this expression. Activation energies for molecular reorientation of 1.4 kcal/mole for BF3 and 1.0 kcal/mole for ClO3F are obtained.