Rotational magnetic moment spectrum of SF6

Abstract

The rotational magnetic moment spectrum of SF6 has been studied by the molecular beam magnetic resonance method. The transitions observed involve the reorientation of the rotational angular momentum relative to an external magnetic field in the high field limit. The magnitude and sign of the rotational g-factor gJ and of the average fluorine spin rotation constant ca have been determined. The results are gJ=−(0.03732±0.00005) nm and ca=−(5.27±0.40) kHz. The applications of these results to the paramagnetic part of the average nuclear shielding constant, to the paramagnetic part of the molecular magnetic susceptibility, to the electronic term in gJ, and to fluorine spin–lattice relaxation experiments in SF6 are discussed.