Interaction of the NO 3pπ Rydberg state with Ar: Potential energy surfaces and spectroscopy

Interaction of the NO 3pπ (C (2)Π) Rydberg state with RG (RG = Ne, Kr, and Xe): potential energy surfaces and spectroscopy

We present new potential energy surfaces for the interaction of NO(C (2)Π) with each of Ne, Kr, and Xe. The potential energy surfaces have been calculated using second order Møller-Plesset perturbation theory, exploiting a procedure to converge the reference Hartree-Fock wavefunction for the excited states: the maximum overlap method. The bound rovibrational states obtained from the surfaces are used to simulate the electronic spectra and their appearance is in good agreement with available (2+1) REMPI spectra. We discuss the assignment and appearance of these spectra, comparing to that of NO-Ar.

Modelling excited states of weakly bound complexes with density functional theory

Different dispersion correction parameters are required to describe the interaction when the molecule is in an excited Rydberg state.