High-resolution infrared spectrum of formaldoxime (CH2NOH) in the 3-μm and OH overtone regions

Details High-resolution infrared spectrum of formaldoxime (CH2NOH) in the 3-μm and OH overtone regions High-resolution infrared spectrum of formaldoxime (CH2NOH) in the 3-μm and OH overtone regions

Dec 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988jmosp.132..393d&link_type=abstract

Journal of Molecular Spectroscopy, Volume 132, Issue 2, p. 393-406.

Astronomy and Astrophysics

Astronomy

5

Scientific paper

The infrared spectrum of the simplest oxime, CH2NOH, was obtained in the gas phase with a resolution of 0.01 cm-1 using the Kitt Peak National Observatory Solar Fourier transform spectrometer. The regions covered were from 1800 to 3700 cm-1, and around 7100 cm-1. The ν1, ν2, and ν3 bands have been analyzed in detail, and a partial analysis of the 2ν1 band has been made. In the ν1, ν2, and ν3 bands several hundred transitions were fitted and accurate band origins and rotational constants were determined. All these bands are found to be hybrid bands, ν1 has a dominant A component, whereas ν2 and ν3 have a dominant B component, rather than being predominantly A type as previously assumed. The main results (in cm-1) for the excited states are:
Bandν0ABC
ν13650.29132.251760.395280.33590
ν23109.72052.254390.394670.33566
ν32973.16822.250880.395120.33559
2ν17131.4 Several local perturbations have been observed in ν2 and ν3. They are presumably caused by overtones and combinations of the low-lying fundamentals, but it has not been possible to make specific assignments to the perturbing levels.
Visiting Scientist, NSO Kitt Peak, National Optical Astronomy Observatories operated by the Association of Universities for Research in Astronomy Inc., under contract with the National Science Foundation.

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