Multi-state Approach to Chemical Reactivity in Fragment Based Quantum Chemistry Calculations

Multi-state Approach to Chemical Reactivity in Fragment Based Quantum Chemistry Calculations

We introduce a multistate framework for Fragment Molecular Orbital (FMO) quantum mechanical calculations and implement it in the context of protonated water clusters. The purpose of the framework is to address issues of nonuniqueness and dynamic fragmentation in FMO as well as other related fragment...

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Veröffentlicht in:Journal of chemical theory and computation 2013-09, Vol.9 (9), p.4018-4025
Hauptverfasser: Lange, Adrian W, Voth, Gregory A
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creator Lange, Adrian W
Voth, Gregory A
description We introduce a multistate framework for Fragment Molecular Orbital (FMO) quantum mechanical calculations and implement it in the context of protonated water clusters. The purpose of the framework is to address issues of nonuniqueness and dynamic fragmentation in FMO as well as other related fragment methods. We demonstrate that our new approach, Fragment Molecular Orbital Multistate Reactive Molecular Dynamics (FMO-MS-RMD), can improve energetic accuracy and yield stable molecular dynamics for small protonated water clusters undergoing proton transfer reactions.
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