Magnetic-Susceptibility Anisotropy of CO and CS

Abstract

The asymmetric frequency shifts in the Zeeman splittings of the first rotational lines of CO and CS have been measured. The magnetic anisotropy evaluated from these shifts is ( − 8.2 ± 0.9) × 10⁻⁶ for CO and ( − 24 ± 3) × 10⁻⁶ for CS, both in ergs/gauss²·mole. The molecular quadrupole moments are estimated from the anisotropies, and the $g$ factor of CS is shown to be negative.