We have simulated the HOONO vibrational overtone spectrum with use of a local mode Hamiltonian that includes the OH-stretching, OOH-bending, and NOOH-torsional modes and coupling between all three modes. The local mode parameters and the dipole moment function are calculated with coupled-cluster ab initio theory and an augmented Dunning-type triple-zeta basis set. We investigate the accuracy of the local mode parameters obtained from two different potential-energy fitting routines, as well as the sensitivity of these parameters to the basis set employed. We compare our simulated spectra to previously published action spectra in the first and second OH-stretching overtone regions. In addition we have recorded the spectrum in the OH-stretch and OOH-bend combination region around and we also compare to this. Our simulated spectrum is in qualitative agreement with experiment in the first and second OH-stretching overtone and in the stretch-bend regions.
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1 October 2005
Research Article|
October 05 2005
The OH-stretching and OOH-bending overtone spectrum of HOONO
J. Chem. Phys. 123, 134318 (2005)
Article history
Received:
July 07 2005
Accepted:
August 09 2005
Citation
Daniel P. SchofieldHenrik G. KjaergaardJamie MatthewsAmitabha Sinha; The OH-stretching and OOH-bending overtone spectrum of HOONO. J. Chem. Phys. 1 October 2005; 123 (13): 134318. https://doi.org/10.1063/1.2047574
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