Vibration-rotation spectra of 13C containing acetylene: anharmonic resonancesVenuti, E., Di Lonardo, G., Ferracuti, P., Fusina, L. and Mills, I. (1995) Vibration-rotation spectra of 13C containing acetylene: anharmonic resonances. Journal of Chemical Physics, 190 (2-3). pp. 279-290. ISSN 0301-0104 Full text not archived in this repository. It is advisable to refer to the publisher's version if you intend to cite from this work. See Guidance on citing. To link to this item DOI: 10.1016/0301-0104(94)00280-N Abstract/SummaryHigh resolution vibration-rotation spectra of 13C2H2 were recorded in a number of regions from 2000 to 5200 cm−1 at Doppler or pressure limited resolution. In these spectral ranges cold and hot bands involving the bending-stretching combination levels have been analyzed up to high J values. Anharmonic quartic resonances for the combination levels ν1 + mν4 + nν5, ν2 + mν4 + (n + 2) ν5 and ν3 + (m − 1) ν4 + (n + 1) ν5 have been studied, and the l-type resonances within each polyad have been explicitly taken into account in the analysis of the data. The least-squares refinement provides deperturbed values for band origins and rotational constants, obtained by fitting rotation lines only up to J ≈ 20 with root mean square errors of ≈ 0.0003 cm−1. The band origins allowed us to determine a number of the anharmonicity constants xij0.
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