Theoretical study of the effects of vibrational-rotational interactions on the Raman spectrum of N2

Abstract
A systematic study of the polarizability and polarizability derivatives of N2 is undertaken as a function of basis set and level of correlation treatment. The value obtained for the ratio of derivatives (re β′ee) of the polarizability anisotropy β=α−α is 3.15±0.2, which is larger than the two experimental estimates of 2.63±0.29 and 2.22±0.44.