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Improved Rovibrational Constants for the ν3 Infrared Band of HCOOD

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

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
59 KB
Volume
197
Category
Article
ISSN
0022-2852

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✦ Synopsis

Since formic acid (HCOOH) is an important constituent in interstellar space (1), it is worthwhile to study HCOOD to determine rovibrational constants that would provide a reliable calculation of the spectra of HCOOD. The present work provides improved spectroscopic constants for the 3 band of HCOOD near 1770 cm Ϫ1 using the high-resolution FTIR technique. The 3 band has been well investigated at high resolution using laser stark and FTIR spectroscopy (2). The present study provides improved rovibrational constants derived from the high resolution FTIR measurements and analysis of the 3 band of HCOOD.

The measurements of Nemes et al.

(2) yielded 13 rovibrational constants for TABLE 1 Rovibrational and Coupling Constants (in cm ؊1 ) for 3 ‫؍‬ 1 and 5 ؉ 7 ‫؍‬ 1 States of HCOOD (A-Reduction, I r Representation)

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