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Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-3459

Pieniazek, P A; VandeVondele, J; Jungwirth, P; Krylov, A I; Bradforth, S E (2008). Electronic structure of the water dimer cation. Journal of Physical Chemistry. A, 112(27):6159-6170.

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The spectroscopic signatures of proton transfer in the water dimer cation were investigated. The six lowest electronic states were characterized along the reaction coordinate using the equation-of-motion coupled-Cluster with single and double substitutions method for ionized systems. The nature of the dimer states was explained in. terms of the monomer states using a qualitative molecular orbital framework. We found that proton transfer induces significant changes in the electronic spectrum, thus Suggesting that time-resolved electronic femtosecond spectroscopy is an effective strategy to monitor the dynamics following ionization. The electronic spectra at vertical and proton-transferred configurations include both local exitations (features C similar to those of the monomers) and charge-transfer bands. Ab initio calculations were used to test the performance of a self-interaction correction for density functional theory (DFT). The corrected DFT/BLYP method is capable of quantitatively reproducing the proper energetic ordering of the (H2O)(2)(+) isomers and thus is a reasonable approach for calculations of larger systems.


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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Department of Chemistry
Dewey Decimal Classification:540 Chemistry
Date:June 2008
Deposited On:07 Oct 2008 10:09
Last Modified:05 Apr 2016 12:27
Publisher:American Chemical Society
Publisher DOI:10.1021/jp802140c

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