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    Author(s): Thomas Elder; Laura Berstis; Nele Sophie Zwirchmayr; Gregg T. Beckham; Michael F. Crowley
    Date: 2017
    Source: In:Proceedings of the 19th International Symposium on Wood, Fibre and Pulping Chemistry
    Publication Series: Scientific Journal (JRNL)
    Station: Southern Research Station
    PDF: Download Publication  (270.0 KB)


    Computational chemical methods have become an important technique in the examination of the structure and reactivity of lignin. The calculations can be based either on classical or quantum mechanics, with concomitant differences in computational intensity and size restrictions. The current paper will concentrate on results developed from the latter type of calculations for lignin model compounds. These methods can provide information on molecular geometry, thermodynamic properties, kinetics and electronic structure. Using density functional theory, the energies associated with bond dissociation and radical oxidation have been determined for β-O-4 dimers and trimers, pinoresinols, dibenzodioxocins, catecholalcohol based dimers, spirodienones, and combinations with tricin, catechins and epicatechins. Ongoing work is concerned with homo-coupled ferulates and cross-coupled lignin-ferulates. Exhaustive examinations of stereochemistry reveals the existence of thermodynamic differences with configuration.

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    Elder, Thomas; Berstis, Laura; Zwirchmayr, Nele Sophie; Beckham, Gregg T.; Crowley, Michael F. 2017. The application of computational chemistry to lignin. In:Proceedings of the 19th International Symposium on Wood, Fibre and Pulping Chemistry, Aug. 30 – Sept. 1, 2017. Porto Seguro, BA, Brazil. 2017. 3 pages


    lignin, density functional theory, bond dissociation energy

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