“…For instance, the shape of the A 1 Σ + ub 3 Π u and B 1 Π u -b 3 Π u SO coupling functions as well as b 3 Π u SO splitting functions corresponding to the second dissociation limit (see figures 1a,b and 2a) looks like the inharmonic interatomic potential with the minimum which is approximately 2/3 of the relevant atomic value. The similar behavior of the A − b, B − b and b − b matrix elements is observed for heteronuclear alkali diatomics [23,24,25,26] as well. At the same time, the single configuration properties of the 2 1,3 Π u and 1 1,3 ∆ u states of Cs 2 converging to the third dissociation limit are confirmed by the almost R-independent behavior of the relevant SO matrix elements closed to their asymptotic atomic value ξ 5 2 D Cs (see figure 3a).…”