Table : The rotationally averaged traceless cartesian polarizabilities (atomic units) of the linear acetonitrile molecule, MeCN, calculated using MP2/aug-cc-pVDZ. The rotational averages of the components of the polarizabilities over the z axis are obtained using the expressions similar to Eq. 12. All moments defined with respect to the center of mass. The double index ij runs over xx, xy, xz, yy, yz, zz.