Oxygen atom transfer reactions in inorganic analogues of the active site of dimethyl sulfoxide reductase; a DFT and ONIOM (DFT:PM3) study

Jonathan P. McNamara, Matthias Mohr, Hong Wang, Ian H. Hillier

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Both density functional theory (DFT) and dual level (ONIOM) calculations have been used to explore the electronic structure and reactivity of dithiolene complexes of molybdenum and tungsten involved in oxygen transfer reactions in which dimethyl sulfoxide is reduced to dimethyl sulfide. The DFT calculations predict both a reaction profile and the effect of substituents on the axial phenyl ligand in line with experiment. ONIOM calculations in which the axial phenyl group is described at the PM3 level are also successful in describing these features, although the PM3 method is unsuitable for describing the reaction without reparameterization. It is shown that new molybdenum parameters can be developed by calibration against experimental and theoretical data for the photoionization of species containing the [MoOS4]1- centre. © 2005 Taylor & Francis Group Ltd.
    Original languageEnglish
    Pages (from-to)2465-2475
    Number of pages10
    JournalMOLECULAR PHYSICS
    Volume103
    Issue number18
    DOIs
    Publication statusPublished - 20 Sept 2005

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