Angular dependence of the long-range interaction between CH and S in the three lower electronic states. Points are the CASSCF(aV5Z) energies (in cm⁻¹) as a function of the Jacobi angle 9 (defined in the text) for r_CH = 1.1199 Å and R = 10, 15, 20 and 30 Å, as indicated in each panel, for the 1²A″, 1²A′, and 2²A″ states. Lines correspond to the long-range analytical fit of Eq. (2) taken from Zeimen et al. (2003).