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Model for cage formation in colloidal suspension of laponite
In this paper we investigate glass transition in aqueous suspension of synthetic hectorite clay, laponite. We believe that upon dispersing laponite clay in water, the system comprises of clusters (agg...

Mode-specific tunneling dynamics in the ground electronic state of tropolone

J. Chem. Phys. 127, 081101 (2007); doi:10.1063/1.2771142

Published 28 August 2007

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Daniel Murdock, Lori A. Burns, and Patrick H. Vaccaro
Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520-8107, USA
The mode specificity of proton-transfer dynamics in the ground electronic state (X-tilde   1A1) of tropolone has been explored at near-rotational resolution by implementing a fully coherent variant of stimulated emission pumping within the framework of two-color resonant four-wave mixing spectroscopy. Three low-lying (Evib[approximate]550–750  cm−1) vibrational features, assigned to nu30(a1), nu32(b2), and nu31nu38(a1), have been interrogated under ambient, bulk-gas conditions, with term energies determined for the symmetric and antisymmetric (tunneling) components of each enabling the attendant tunneling-induced bifurcations of 1.070(9), 0.61(3), and 0.07(2)  cm−1 to be extracted. The dependence of tunneling rate (or hydron migration efficiency) on vibrational motion is discussed in terms of corresponding atomic displacements and permutation-inversion symmetries for the tropolone skeleton. ©2007 American Institute of Physics
History: Received 3 July 2007; accepted 20 July 2007; published 28 August 2007
Permalink: http://link.aip.org/link/?JCPSA6/127/081101/1
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KEYWORDS and PACS

Keywords
PACS
  • 33.80.Be
    Molecular level crossing and optical pumping
  • 33.80.Wz
    Other multiphoton processes in molecules
  • 31.50.Bc
    Potential energy surfaces for ground electronic states (atoms and molecules)
  • 33.20.Tp
    Vibrational analysis (molecular spectra)
  • 34.30.+h
    Intramolecular energy transfer; intramolecular dynamics; dynamics of van der Waals molecules
  • YEAR: 2007

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PUBLICATION DATA

ISSN:
0021-9606 (print)   1089-7690 (online)
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