0181513 - UFCH-W 20020253 RIV US eng J - Journal Article
Müller, H. S. P. - Pracna, Petr - Hornemam, V. M.
The .nu.(10)= 1 Level of Propyne, H3C-C=CH, and Its Interactions with .nu.(9)=1 and .nu.(10)=2.
Journal of Molecular Spectroscopy. Roč. 216, - (2002), s. 397-407. ISSN 0022-2852. E-ISSN 1096-083X
R&D Projects: GA ČR GA203/01/1274; GA MŠMT ME 445
Institutional research plan: CEZ:AV0Z4040901
Keywords : methylacetylene * high resolution * FTIR spectroscopy
Subject RIV: CF - Physical ; Theoretical Chemistry
Impact factor: 1.251, year: 2002

Almost 300 new rotational transitions within the fundamental vibrational level v(10)=1 of propyne have been measured in selected regions between 495 and 925 GHz spanning the quantum numbers 28less than or equal toJless than or equal to54 and 0less than or equal toKless than or equal to16. The accuracies are mostly between 10 and 20 kHz. In addition, the J"=4 and 5 transitions near 85 and 103 GHz have been remeasured. Simultaneous analyses with refined rovibrational data have been performed, showing that even this lowest and seemingly isolated vibrational level needs a global treatment when high K transitions are involved. The global model with the v(10)=1 level coupled to the next higher cluster of levels, v(10)=2/v(9)=1, by Fermi and Coriolis resonances is necessary for a quantitative reproduction of both the rovibrational and rotational data within their experimental uncertainties.
Permanent Link: http://hdl.handle.net/11104/0078071