par Mellouki, Abdeloihid 
;Vander Auwera, Jean ;Herman, Michel
Référence Journal of Molecular Spectroscopy, 193, 1, page (195-203)
Publication Publié, 1999
;Vander Auwera, Jean ;Herman, Michel Référence Journal of Molecular Spectroscopy, 193, 1, page (195-203)
Publication Publié, 1999
Article révisé par les pairs
| Résumé : | We have recorded the infrared absorption spectrum of pyrrole at 0.005 cm-1 spectral resolution using a Fourier transform interferometer. The rotational analysis of the symmetric out-of-plane C-H bend 220 1 fundamental band at 722.132993(5) cm-1 was performed, allowing 6760 lines to be assigned. These lines were fitted simultaneously to literature data on ν1 [A. Mellouki, R. Georges, M. Herman, D. L. Snavely, and S. Leytner, Chem. Phys. 220, 311-322 (1997)] and microwave lines [G. Wlodarczak, L. Martinache, J. Demaison, and B. P. Van Eijck, J. Mol. Spectrosc. 127, 200-208 (1988)]. A set of rotation parameters was determined for the ground state in Ir and IIIr representations, together with vibration-rotation constants for the ν1 = 1 and ν22 = 1 vibrational states. The fine structure in the strongest of the hot bands in that range was highlighted by division, from the experimental data, of the spectrum of the 220 1 band, computed using the vibration-rotation parameters. The rotational assignment of 930 lines in the strongest hot band was performed. The 220 1241 1 vibrational assignment is proposed, leading to x22,24 = 1.90 cm-1. The transition dipole matrix element for the 220 1 band is estimated to |
