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The A-X Band System of C2D2: Vibration-Rotation Constants for the 1Au State

par Huet, Thérèse ;Herman, Michel
Référence Journal of Molecular Spectroscopy, 137, 2, page (396-419)
Publication Publié, 1989

Article révisé par les pairs

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Résumé :

The analysis of data arising from high-resolution absorption spectra of the A ̃- X ̃ band system in C2D2 leads to assignment of 130 out of 135 bands observed between 41 500 and 47 900 cm-1. New or improved results are obtained for 24 vibrational levels in the A ̃1Au electronic state. For the first time rotational constants are presented for the upper state, concerning 19 of those vibrational levels. The analysis of several axis-switching bands is also reported. Perturbations are tentatively assigned in terms of a close-by triplet electronic state.