Theoretical study of the vibronic structure of the 11Π ←X1Σ+electronic transition in HCN and DCN

Abstract
The vibronic structure of the 1 1Π ← X Σ+ electronic transition in HCN and DCN is studied by means of ab initio methods. The positions and intensities of corresponding spectral bands are predicted and the results of these calculations lead to a new interpretation of experimental findings concerning the CX and DX spectra of HCN and DCN.