Central-force potentials for interaction of rotationally and vibrationally excited molecules

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Abstract
A general and computationally efficient approach evaluating the central-force potentials for interaction of rotationally and vibrationally excited molecules and molecular ions is presented. Examples of numerical calculations are given for interactions of diatomic systems (H2, N2 and O2) in ground electronic states. The approach can be applied in a straightforward way to interactions of atoms and atomic ions with diatomic molecules in arbitrary rotational-vibrational states.