Journal article
Structures of the xylose–water complex: Energetics, transitions between conformers and spectroscopy
Department of Chemistry, University of California, Irvine, CA 92697-2025, USA1
Department of Chemistry, Physical and Theoretical Chemistry Laboratory, South Parks Road, Oxford OX1 3QZ, UK2
Institute of Chemistry and The Fritz Haber Research Center, The Hebrew University, Jerusalem 91904, Israel3
Structure optimization, ab initio molecular dynamics (AIMD) simulation of transitions between structures, vibrational self-consistent field (VSCF) calculations of vibrational spectra and infrared ion dip (IRID) experiments have been used to explore the potential energy landscape of isomeric xylose·H2O (and D2O).
The VSCF predictions are in close correspondence with the experimental data but the spectra associated with their two low energy isomers are too similar to permit an unequivocal structural assignment. At cryogenic temperatures several low energy isomers could be ‘frozen in’ but at 300K the AIMD simulations predict rapid transitions between them and in consequence, a highly fluxional system.
Language: | English |
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Year: | 2011 |
Pages: | 49-54 |
ISSN: | 18734448 and 00092614 |
Types: | Journal article |
DOI: | 10.1016/j.cplett.2011.11.008 |