New data on the high resolution spectra of vibronic bands of the aniline-neon van der Waals complex with excess vibrational energy up to 1000 cm(-1) above the S-1 origin have been obtained. The rotationally resolved structure of the 12(0)(1) and 6a(0)(2) bands of both Ne-20-aniline and Ne-22-aniline isotopomers reveal: (1) a dynamical contribution to the linewidth of the molecular eigenstates, (2) the existence of an accidental perturbation responsible for a local increase of the relaxation rate. The results are interpreted in terms of the competition between intramolecular vibrational redistribution and direct vibrational pre-dissociation processes.
Dynamics of vibronically excited states of the aniline-neon van der Waals complex: vibrational predissociation versus intramolecular vibrational redistribution / M. BECUCCI; G. PIETRAPERZIA; E. CASTELLUCCI; P. BRECHIGNAC. - In: CHEMICAL PHYSICS LETTERS. - ISSN 0009-2614. - STAMPA. - 390:(2004), pp. 29-34. [10.1016/j.cplett.2004.03.138]
Dynamics of vibronically excited states of the aniline-neon van der Waals complex: vibrational predissociation versus intramolecular vibrational redistribution
BECUCCI, MAURIZIO;PIETRAPERZIA, GIANGAETANO;CASTELLUCCI, EMILIO MARIO;
2004
Abstract
New data on the high resolution spectra of vibronic bands of the aniline-neon van der Waals complex with excess vibrational energy up to 1000 cm(-1) above the S-1 origin have been obtained. The rotationally resolved structure of the 12(0)(1) and 6a(0)(2) bands of both Ne-20-aniline and Ne-22-aniline isotopomers reveal: (1) a dynamical contribution to the linewidth of the molecular eigenstates, (2) the existence of an accidental perturbation responsible for a local increase of the relaxation rate. The results are interpreted in terms of the competition between intramolecular vibrational redistribution and direct vibrational pre-dissociation processes.
I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
