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Rotational Spectrum of Hydrazine in the Submillimeter Range

✍ Scribed by Marek Krȩglewski; Jean Cosléou; Georges Wlodarczak

Publisher
Elsevier Science
Year
2002
Tongue
English
Weight
117 KB
Volume
216
Category
Article
ISSN
0022-2852

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✦ Synopsis

In the submillimeter range, from 345 to 410 GHz, 472 new rotational transitions in the vibrational ground state of hydrazine have been measured. The majority of recorded lines form eight K = 2 ← 1 Q-branches with J ≤ 30, each branch being split due to internal rotation in hydrazine. New rotational transitions together with 443 known earlier have been fitted to an effective grouptheoretical Hamiltonian originally developed by Hougen (J. T. Hougen, J. Mol. Spectrosc. 89, 296-327 (1981)). A reasonable fit was obtained using several K = 0, ±1, ±2, and ±4 matrix elements. For all 915 rotational transitions an overall standard deviation of the fit of 0.59 MHz was obtained using 32 parameters. These were 14 asymmetric rotor constants, 16 NH 2 inversion parameters, and 2 internal rotation parameters.

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