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J. Orphal, A. Frenzel, H. Grothe, B. Redlich, D. Scheffler, H. Willner, C. Zetzsch:
"High-Resolution Infrared Fourier-Transform-Spectroscopy and Rotational Constants of the ν₄ Band of BrNO₂";
Journal of Molecular Spectroscopy, 191 (1998), 88 - 92.

For the first time, high-resolution infrared gas-phase absorption spectra of the BrNO₂ molecule were recorded using a Fourier-transform spectrometer. In this paper, the ν₄ bands of the ⁷⁹BrNO₂ and ⁸¹BrNO₂ isotopomers around 1670 cm⁻¹ are investigated. Although the spectra are highly congested, rotational and centrifugal distortion constants for the ground and ν₄=1 states of ⁷⁹BrNO₂ and ⁸¹BrNO₂ were determined. The results show that BrNO₂ is a planar molecule of C_2v symmetry and confirm predictions from a recent ab initio study.

http://dx.doi.org/10.1006/jmsp.1998.7641

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