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The High-Resolution Infrared Spectrum of 1,2,4-Triazine Vapor between 550 and 1700 cm−1

✍ Scribed by D. Thastum Bach; F. Hegelund; J.A. Beukes; F.M. Nicolaisen; M.H. Palmer

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
352 KB
Volume
198
Category
Article
ISSN
0022-2852

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✦ Synopsis

The Fourier transform gas-phase IR spectrum of 1,2,4-triazine between 550 and 1700 cm Ϫ1 was measured with a resolution of ca. 0.003 cm Ϫ1 . Comparing with the liquid-phase IR and Raman spectra and using ab initio predictions, most of the fundamental bands of 1,2,4-triazine below 1600 cm Ϫ1 were assigned. From the high-resolution gas-phase spectra, 12 of the fundamental bands were analyzed by the Watson Hamiltonian model to yield upper state spectroscopic constants. A number of local resonances were identified and explained. From a simultaneous ground state combination difference analysis of four of the bands, a set of ground state rotational and centrifugal distortion constants were obtained.

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