Open AccessPyrimidine, an Intermediate State Molecule?
Author(s) -
W. Leo Meerts,
W. A. Majewski
Publication year - 1986
Publication title -
laser chemistry
Language(s) - English
Resource type - Journals
eISSN - 1026-8014
pISSN - 0278-6273
DOI - 10.1155/lc.5.339
Subject(s) - chemistry , excited state , atomic physics , collimated light , pyrazine , spectral line , laser , molecule , fluorescence , radiation , resolution (logic) , molecular physics , physics , optics , quantum mechanics , stereochemistry , organic chemistry , artificial intelligence , computer science
The S 1 ( 1 B 1 ) ← S 0 ( 1 A 1 ) transition in pyrazine has beeninvestigated. High resolution laser induced fluorescencespectra were obtained by crossing a well collimatedmolecular beam with UV radiation of an intra-cavityfrequency doubled ring laser. The extreme resolutionenabled us to observe the molecular eigenstates of theelectronically excited state. Most of the spectralfeatures of the S 1 state could be interpreted in termsof a slightly perturbed axis switched rotor spectrum.The perturbations show up both in the energy levels ofthe S 1 and in the intensities of the observed transitions.
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