An accurate quartic force field for formaldehyde
- 8 January 1996
- journal article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 104 (2), 480-487
- https://doi.org/10.1063/1.471531
Abstract
An accurate quartic force field for formaldehyde is obtained by refining the ab initio quartic force field of Martin, Lee, and Taylor [J. Mol. Spectrosc. 160, 105 (1993)]. The refinement was achieved by iteratively fitting a subset of the coefficients of a Taylor‐series expansion of the potential‐energy surface to 138 of the observed transition frequencies, many of which were obtained by Bouwens et al. [J. Chem. Phys. 104, 460 (1994)] using dispersed fluorescence spectroscopy. We fit the vibrational energies (≤7600 cm−1) for 138 states with an absolute mean deviation of 1.5 cm−1.Keywords
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