Torsional splitting in the ν9 band of nitric acid

C. D. Paulse; L. H. Coudert; T. M. Goyette; R. L. Crownover; P. Helminger; F. C. De Lucia

doi:10.1006/jmsp.1996.0111

Torsional splitting in the ν₉ band of nitric acid

C. D. Paulse, L. H. Coudert, T. M. Goyette, R. L. Crownover, P. Helminger, F. C. De Lucia

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20 Scopus citations

Abstract

A wide variety of microwave transitions within the υ₉ = 1 vibrational state of nitric acid have been measured in the millimeter/submillimeter region. Torsional splittings on the order of 2.5 MHz have been observed and are due to the fact that the ν₉ mode is a large amplitude torsional-type motion. Using an internal-axis-method-like formalism, an approach was developed to account for the effects of this large amplitude motion and was afterward applied to the analysis of the microwave frequencies. The model fits the data to within experimental accuracy, and provides quantitative predictions of relative transition intensities.

Original language	English (US)
Pages (from-to)	9-18
Number of pages	10
Journal	Journal of Molecular Spectroscopy
Volume	177
Issue number	1
DOIs	https://doi.org/10.1006/jmsp.1996.0111
State	Published - May 1996
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Spectroscopy
Physical and Theoretical Chemistry

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10.1006/jmsp.1996.0111

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abstract = "A wide variety of microwave transitions within the υ9 = 1 vibrational state of nitric acid have been measured in the millimeter/submillimeter region. Torsional splittings on the order of 2.5 MHz have been observed and are due to the fact that the ν9 mode is a large amplitude torsional-type motion. Using an internal-axis-method-like formalism, an approach was developed to account for the effects of this large amplitude motion and was afterward applied to the analysis of the microwave frequencies. The model fits the data to within experimental accuracy, and provides quantitative predictions of relative transition intensities.",

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AU - Paulse, C. D.

AU - Coudert, L. H.

AU - Goyette, T. M.

AU - Crownover, R. L.

AU - Helminger, P.

AU - De Lucia, F. C.

PY - 1996/5

Y1 - 1996/5

N2 - A wide variety of microwave transitions within the υ9 = 1 vibrational state of nitric acid have been measured in the millimeter/submillimeter region. Torsional splittings on the order of 2.5 MHz have been observed and are due to the fact that the ν9 mode is a large amplitude torsional-type motion. Using an internal-axis-method-like formalism, an approach was developed to account for the effects of this large amplitude motion and was afterward applied to the analysis of the microwave frequencies. The model fits the data to within experimental accuracy, and provides quantitative predictions of relative transition intensities.

AB - A wide variety of microwave transitions within the υ9 = 1 vibrational state of nitric acid have been measured in the millimeter/submillimeter region. Torsional splittings on the order of 2.5 MHz have been observed and are due to the fact that the ν9 mode is a large amplitude torsional-type motion. Using an internal-axis-method-like formalism, an approach was developed to account for the effects of this large amplitude motion and was afterward applied to the analysis of the microwave frequencies. The model fits the data to within experimental accuracy, and provides quantitative predictions of relative transition intensities.

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Torsional splitting in the ν₉ band of nitric acid

Abstract

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