Quapp W, Bofill JM. Comment on "Exploring Potential Energy Surface with External Forces".
J Chem Theory Comput 2020;
16:811-815. [PMID:
31725299 DOI:
10.1021/acs.jctc.9b00736]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Recently, a work (Wolinski, K., J. Chem. Theory Comput. 2018, 14, 6306, 10.1021/acs.jctc.8b00885 ) was published in which the SEGO method (standard and enforced geometry optimization) was proposed to find new minimums on potential energy surfaces. We study this important method from a theoretical point of view. Up to now, the understanding of the proposer does not take into account the barrier breakdown point on a SEGO path being usually half of the path, which is searched for. However, a better understanding of the method allows us to follow along the reaction pathway from a minimum to a saddle point or vice versa. We discuss the well-known two-dimensional MB test surface where we calculate full SEGO pathways. If one has special SEGO curves at hand, one can also detect some weaknesses of the ansatz.
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