Terahertz Vibration−Rotation−Tunneling Spectroscopy of the Ammonia Dimer. II. A − E States of an Out-of-Plane Vibration and an In-Plane Vibration

Terahertz vibration−rotation−tunneling transitions have been measured between ca. 78.5 and 91.9 cm-1, and assigned to A − E (ortho−para) combinations of NH3 monomer states. The spectrum is complicated by inversion splittings that correlate to E symmetry monomer rovibronic states. Twenty progressions...

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Bibliographic Details
Published in:The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory Molecules, spectroscopy, kinetics, environment, & general theory, 2007-10, Vol.111 (39), p.9680-9687
Main Authors: Lin, Wei, Han, Jia-xiang, Takahashi, Lynelle K, Loeser, Jennifer G, Saykally, Richard J
Format: Article
Language:English
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Summary:Terahertz vibration−rotation−tunneling transitions have been measured between ca. 78.5 and 91.9 cm-1, and assigned to A − E (ortho−para) combinations of NH3 monomer states. The spectrum is complicated by inversion splittings that correlate to E symmetry monomer rovibronic states. Twenty progressions have been assigned to six excited states involving an out-of-plane vibration and an in-plane intermolecular vibration. The quality of the fit was affected by strong Coriolis interactions among these states and possibly an additional K = 2 state that was not explicitly observed in the data.
ISSN:1089-5639
1520-5215
DOI:10.1021/jp0725836