MOLECULAR MAGNETIC SUSCEPTIBILITY TENSOR IN SULFUR DIOXIDE

The diagonal elements in the magnetic susceptibility tensor in the principal molecule-fixed inertial axis system in SO2 have been determined by observing the molecular rotational Zeeman effect with a high-resolution microwave spectrometer. The signs of gaa, g bb, gcc have been found to be negative from theoretical considerations. The principal values of the magnetic susceptibility tensor, paramagnetic susceptibility tensor, and diamagnetic susceptibility tensor are, respectively: χaa= -14.4±1.2, x= -19.6±0.5, χM= -20.6 ± 0.6; χaav =38.9±0.3, χxp= 129.3 ±1.4, χcp=139.5±1.2; χaad=-53.3±1.2, χbb d=-148.9±1.5, χccd= -160.1 ± 1.3 (all in units of 10-6 erg/G2 ̇ mole). The ground-state averages of the sum of the squares of the electronic coordinates, and approximate values of the diagonal components of the quadrupole moment tensor have also been determined.