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Rovibrational spectroscopy of the Fermi-interacting nu(4)=1 and nu(3) = nu(6)=1 levels of DCF3
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SYSNO ASEP 0341550 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Rovibrational spectroscopy of the Fermi-interacting nu(4)=1 and nu(3) = nu(6)=1 levels of DCF3 Author(s) Pracna, Petr (UFCH-W)
Ceausu-Velcescu, A. (FR)
Predoi-Cross, A. (CA)
Urban, Š. (CZ)Source Title Journal of Molecular Spectroscopy. - : Elsevier - ISSN 0022-2852
Roč. 259, č. 1 (2010), s. 1-10Number of pages 10 s. Language eng - English Country US - United States Keywords deuterated fluoroform ; high resolution IR spectroscopy ; anharmonic and vibration-rotation resonances Subject RIV CF - Physical ; Theoretical Chemistry R&D Projects IAA400400706 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) LC06071 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z40400503 - UFCH-W (2005-2011) UT WOS 000273967300001 DOI 10.1016/j.jms.2009.09.007 Annotation The high-resolution infrared spectrum of deuterated fluoroform (DCF3) Was studied in the 700 and 1200 cm(-1) regions, with the aim of assigning and analyzing the nu(4) CF3 asymmetric stretching vibration. The Fermi-type anharmonic coupling between the nu(4) = 1 and nu(3) = nu(6) = 1 rovibrational levels, already mentioned in an early work of Ruoff et al. [Spectrochimica Acta Part A 31A (1975) 1099-1100], was studied here for the first time under high resolution. Assignments in the nu(3) + nu(6)/nu(4) band system were confirmed and extended by the identification of the nu(3) + nu(6) - nu(6) and nu(4)-nu(6) bands in the 700 cm(-1) region, the latter being enhanced near the Fermi crossings of the studied levels. Data from both the hot and difference bands were included in the analysis. The close separation of the studied vibrational levels of about 14.8 cm(-1) produces a large variety of resonance crossings which involve levels with Delta k = 0,..., 6. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2011
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