Vibronic coupling constant and vibronic coupling density

Abstract

The definition of vibronic coupling is given with empasis on its difference from non-adiabaric coupling. We present one of the methods for calculation of the vibronic coupling constant and vibronic coupling density analysis that enables us to investigate the local properties of vibronic coupling. Some applications of vibronic coupling density are presented. Vibronic couplings in fullerene ions still contain some unresolved problems as targets for the calculations. Studies on vibronic couplings in fullerene ions are reviewed.