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Lowest Overtone and Combination Levels of DCCI: The Fermi Resonancev3= 1/v5= 2

✍ Scribed by H. Sarkkinen; A.-M. Ahonen; S. Alanko

Publisher: Elsevier Science
Year: 1999
Tongue: English
Weight: 154 KB
Volume: 193
Category: Article
ISSN: 0022-2852
DOI: 10.1006/jmsp.1998.7745

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✦ Synopsis

The infrared spectrum of deuterated monoiodoacetylene DCCI in the region of 220-550 cm-1 has been studied at a resolution of 0.0020 cm-1. The hot bands nu3 <-- nu15 and 2nu0,25 <-- nu15 have been analyzed by considering especially the Fermi resonance v3 = 1/v5 = 2. In the next layer of the hot bands (nu3 + nu5)1 <-- nu3, (nu3 + nu5)1 <-- 2nu0,25 and 3nu1,35 <-- 2nu25 the same Fermi resonance appears between v3 = v5 = 1 and v5 = 3. In addition, various l resonances at the overtone levels have been considered. As a result, the vibrational and rotational constants for the level systems v3 = 1/v5 = 2 and v3 = v5 = 1/v5 = 3 together with the resonance parameters have been obtained. Copyright 1999 Academic Press.

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