THE MILLIMETER AND SUBMILLIMETER WAVE SPECTRA OF PROTONATED AND DEUTERATED NITROUS OXIDE
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Date
1987
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Ohio State University
Abstract
A magnetically confined glow discharge has been used to produce protonated and deuterated nitrous oxide in a mixture of $N_{2}O, H_{2}/O_{2}$ and Ar. A total number of 63 rotational lines for $HON^{+}_{2}$ and 89 for $DO N^{+}_{2}$ characterized respectively by $5 \leq J \leq 18, K_{a} \leq 4$ and $0 \leq J \leq 27, K_{a} \leq 7$ have been observed in the 130 - 405 GHz frequency range. These lines belong to a-type $r_{p}$ - branches and to b-type $r_{R} \_ ^{q}_{R} -$ and $r_{p}$ - branches. From the analysis of these two types of spectrum, accurate molecular parameters have been derived which are in good agreement with recent IR experiments on $HON^{+}_{2}$ (1). The values obtained for the A rotational constant: $\begin{array}{lll}A_{o} = 625957.716 (52) MHz for HON^{+}_{2}\\ \quad \qquad and A_{o} = 349107.385 (14) MHz for DON^{+}_{2}\end{array}$ confirm the recent results of ab initio calculations leading to the conclusion that the preferred site of protonation is at the oxygen atom.
Description
(1) T. Amano, Chem. Phys. Lett., 127, 101 (1986).
Author Institution: Laboratoire de Spectroscopie Hertzienne associ\'e au CNRS, Universit\'e de Lille I; Laboratoire de Spectroscopie Hertzienne associ\'e au CNRS, Herzberg Institute of Astrophysics
Author Institution: Laboratoire de Spectroscopie Hertzienne associ\'e au CNRS, Universit\'e de Lille I; Laboratoire de Spectroscopie Hertzienne associ\'e au CNRS, Herzberg Institute of Astrophysics