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The High-Resolution Infrared Spectrum of the ν5Band of Deuterated Formic Acid (DCOOH)

✍ Scribed by K.L Goh; P.P Ong; T.L Tan; W.F Wang; H.H Teo

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
127 KB
Volume
190
Category
Article
ISSN
0022-2852

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✦ Synopsis

The Fourier transform infrared spectrum of the n 5 band of deuterated formic acid (DCOOH) has been measured with a resolution of 0.004 cm 01 in the frequency range of 1090-1180 cm 01 . Using a Watson's A-reduced Hamiltonian in the I r representation, a total of 1731 assigned unperturbed transitions have been analyzed to provide rovibrational constants for the upper state (£ 5 Å 1) with a standard deviation of 0.000363 cm 01 . The band is A type with an unperturbed band center at 1142.31075 { 0.00002 cm 01 . The band is expected to be perturbed by a nearby n 4 band through a Fermi resonance term and possibly a Coriolis term. The resonance is particularly noticeable for K a Å 10, and 11, at high J values. About 215 perturbed lines were identified but they were not included in the final fit.

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