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- W2323493080 abstract "A common approach to approximating the full electronic energy of a molecular system is to first divide the system into nonoverlapping (disjoint) fragments and then compute the two-body or three-body fragment-fragment interactions using a many-body expansion. In this paper, we demonstrate that, by using a set of fragments which overlap with each other, a many-body expansion converges much faster than using nonoverlapping fragments. A new hierarchical fragmentation scheme is therefore proposed which generalizes the many-body expansion expressions and describes a simple procedure for generating the set of overlapping monomers. This method is referred to as the many-overlapping-body (MOB) expansion and is evaluated with two example systems: four dendritic isomers of C29H60 and 10 conformational isomers of a polypeptide molecule. In both examples, the MOB methodology significantly improves the two-body corrected energies." @default.
- W2323493080 created "2016-06-24" @default.
- W2323493080 creator A5011183754 @default.
- W2323493080 creator A5078991971 @default.
- W2323493080 date "2012-07-06" @default.
- W2323493080 modified "2023-10-08" @default.
- W2323493080 title "Many-Overlapping-Body (MOB) Expansion: A Generalized Many Body Expansion for Nondisjoint Monomers in Molecular Fragmentation Calculations of Covalent Molecules" @default.
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- W2323493080 doi "https://doi.org/10.1021/ct300366e" @default.
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- W2323493080 hasPublicationYear "2012" @default.
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