Journal article

Publication year: 1995

Pages: 365-378

Journal: Journal of Molecular Spectroscopy

Volume number: 174

Issue number: 2

ISSN: 0022-2852

DOI Link: https://doi.org/10.1006/jmsp.1995.0008

Publisher: Elsevier

Abstract: 

The electric dipole transition moments and vibration-rotation constants of the CN stretching bands of (HCN)-C-12-N-14 and six other isotopomers are reported. Hot-band measurements show the vibrational dependence of the constants. Infrared absorption spectra were measured with a Fourier transform interferometer and a multipass absorption cell with a path length of up to 240 m. The transition wavenumber measurements were used to derive vibration-rotation constants, and the intensities of individual lines were used to determine the transition dipoles and Herman-Wallis factors. The unusually small transition dipole coupled with the large dipole moment of HCN (2.98 D) results in very large values for the first Herman-Wallis factor A(1) and distorts the shape of the intensity envelope of the band. These measurements show how changes in the masses of the heavy atoms in the molecule have a systematic effect on the transition dipole and on the intensity pattern of the CN stretching band.

Harvard Citation style: Maki, A., Quapp, W., Klee, S., Mellau, G. and Albert, S. (1995) The CN Mode of HCN: A Comparative Study of the Variation of the Transition Dipole and Herman–Wallis Constants for Seven Isotopomers and the Influence of Vibration–Rotation Interaction, Journal of Molecular Spectroscopy, 174(2), pp. 365-378. https://doi.org/10.1006/jmsp.1995.0008

APA Citation style: Maki, A., Quapp, W., Klee, S., Mellau, G., & Albert, S. (1995). The CN Mode of HCN: A Comparative Study of the Variation of the Transition Dipole and Herman–Wallis Constants for Seven Isotopomers and the Influence of Vibration–Rotation Interaction. Journal of Molecular Spectroscopy. 174(2), 365-378. https://doi.org/10.1006/jmsp.1995.0008