title: Terahertz vibration-rotation-tunneling spectroscopy of the ammonia dimer. II. A-E states of an out-of-plane vibration and an in-plane vibration.
abstract: 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.
authors.affiliation: Department of Chemistry, University of California, Berkeley, California 94720-1460, USA.
authors.forename: Wei
authors.initials: W
authors.lastname: Lin
authors.forename: Jia-Xiang
authors.initials: JX
authors.lastname: Han
authors.forename: Lynelle K
authors.initials: LK
authors.lastname: Takahashi
authors.forename: Jennifer G
authors.initials: JG
authors.lastname: Loeser
authors.forename: Richard J
authors.initials: RJ
authors.lastname: Saykally