MICROWAVE SPECTRA AND STRUCTURES OF H$_2$O$\cdots$AgF
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Date
2011
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Publisher
Ohio State University
Abstract
A Balle-Flygare FT-MW spectrometer coupled to a laser ablation source has been used to measure the pure rotational spectra of H$_{2}$O$\cdots$AgF. Generation is via laser ablation (532 nm) of a silver rod in the presence of SF$_{6}$, argon, a low partial pressure of H$_{2}$O and the molecules are stabilized by supersonic expansion. The spectra of eight isotopologues have been measured. Rotational constants, $\it{B}_{\rm{0}}$ and $\it{C}_{\rm{0}}$, and the centrifugal distortion constant, \Delta $_\it{J}$ have been determined. Isotopic substitutions are available at the silver, oxygen and hydrogen atoms. The spectra are consistent with a linear arrangement of oxygen, silver and fluorine atoms and the structure is either $\it{C}_{\rm{2v}}$ planar at equilibrium or $\it{C}_{\rm{S}}$ pyramidal but with a low potential-energy barrier to planarity such that the v = 0 and 1 states associated with the motion that inverts the configuration at the O atom are well separated.
Description
Author Institution: School of Chemistry, University of Bristol, Bristol, BS8 1TS, U.K