# 10 $\mu m$ INFRARED SPECTRUM OF TETRAHYDROFURAN: QUENCHING OF CORIOLIS INTERACTIONS IN THE VIBRATIONALLY EXCITED STATE

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 dc.creator Andrews, Anne M. en_US dc.creator Pate, Brooks H. en_US dc.creator Miller, C. Cameron en_US dc.creator Ainetschian, A. en_US dc.creator Fraser, G. T. en_US dc.date.accessioned 2006-06-15T15:19:07Z dc.date.available 2006-06-15T15:19:07Z dc.date.issued 1994 en_US dc.identifier 1994-FC-10 en_US dc.identifier.uri http://hdl.handle.net/1811/13019 dc.description Author Institution: Molecular Physics Division, National Institute of Standards and Technology; Department of Chemistry, University of Virginia; Department of Chemistry, Cornell University; Abteilung chemische Physik, Universit\""{a}t Ulm; Molecular Physics Division, National Institute of Standards and Technology en_US dc.description.abstract The 2 MHz resolution infrared spectrum of the asymmetric C-O stretching band of tetrahydrofuran (THF) at $1087 cm^{-1}$ has been observed using a microwave-sideband $CO_{2}$-laser electric-resonance optothermal spectrometer. Transitions arising from ground state levels up to $V=3$ in the pseudorotation quantum number have been measured; definitive band assignments have been made for $V=0 \rightarrow V=0, V=0 \rightarrow V=1, V=1 \rightarrow V=0$ and $V=1 \rightarrow V=1$ transitions. Two additional bands are observed at higher energy which are associated with higher pseudorotation levels; although the J assignments for these bands are definitive, the excited state V assignments are not. All assignments are confirmed by microwave-infrared double resonance or precise ground-state combination differences. For all four bands, the upper-state term values are found to fit to a Watson Hamiltonian to better than 10 MHz, with a few levels not included in the fits perturbed by $> 100$ MHz. Precise microwave $\Delta V$ gaps give equally precise $\Delta V$ gaps for the C-O stretching vibration. In the absence of a third perturbing state, these measurements will furnish information on the vibrational dependence of the pseudorotation portential. en_US dc.format.extent 149746 bytes dc.format.mimetype image/jpeg dc.language.iso English en_US dc.publisher Ohio State University en_US dc.title 10 $\mu m$ INFRARED SPECTRUM OF TETRAHYDROFURAN: QUENCHING OF CORIOLIS INTERACTIONS IN THE VIBRATIONALLY EXCITED STATE en_US dc.type article en_US