期刊
JOURNAL OF MOLECULAR SPECTROSCOPY
卷 249, 期 2, 页码 78-85出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jms.2008.02.008
关键词
formic acid dimer; FAD; proton transfer; proton tunneling; Raman spectra; diabatic representation
The recent reaction surface Hamiltonian model for the double proton tunneling in formic acid dimer of Barnes et al. [G.L. Barnes, S.M. Squires, E.L. Sibert, J. Phys. Chem. B. 112 (2008) 595.] has been applied to the calculation of the symmetric OH stretching Raman spectra. We interpret the full Raman spectra obtained through use of a simplified, single minimum spectrum. Extensive state mixing is found, leading to broad spectral features. Results compare well with the experimental measurements of Bertie et al. [J.E. Bertie, K.H. Michaelian. H.H. Eysel, D. Hager, J. Chem. Phys. 85 (9) (1986) 4779]. We also report improvements upon our previous approach and present ground state and fundamental frequencies as well as tunneling splittings obtained with our new method. (C) 2008 Elsevier Inc. All rights reserved.
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