The Fourier transform and diode laser spectrum of the ν2 band of diazomethane |
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| Authors: | Jürgen Vogt Manfred Winnewisser Koichi Yamada Gisberg Winnewisser |
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| Institution: | Physikalisch-Chemisches Institut, Justus-Liebig-Universität Giessen, Heinrich-Buff-Ring 58, D-6300 Giessen, West Germany;1. Physikalisches Institut, Universität zu Köln, Universitätsstrasse 14, D-5000 Cologne 41, West Germany |
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| Abstract: | The infrared spectrum of the ν2 band (NN stretching) of gaseous diazomethane at 2100 cm?1 has been measured by means of an interferometer and a tunable diode laser spectrometer. For the first time the rotational J and Ka structure of this A-type parallel band has been resolved. Since the spectrum was found to be perturbed it was not possible to fit the upper state levels to an overall hamiltonian. Nine subbands have been analysed with the support of millimeter wave data for the ground vibrational state. Term values for the ν2 = 1 vibrational state with Ka up to 5 have been obtained and subband origins, effective rotational constants B and centrifugal distortion constants D and H were determined for each Ka substate. |
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