Walking on potential energy surfaces

Jack Simons, Poul Jørgensen, Hugh Taylor, Judy Ozment

Research output: Contribution to journalArticle

383 Citations (Scopus)

Abstract

By combining a local quadratic approximation to the potential energy surface with the concept of a trust radius within which this quadratic approximation is accurate, and a scaling of one active coordinate, we have developed an automated surface walking algorithm. This algorithm allows one to walk from geometries characteristic of equilibrium molecular structures, uphill along stream beds, through transition-state geometries, and onward to product-molecule equilibrium geometries. The method has been applied to model and ab initio test cases with encouraging results. The success of using the algorithm in connection with approximate Hessian matrices formed via so-called update techniques, which require only local force information, is especially encouraging in light of the high cost of ab initio analytical evaluation of the Hessian.

Original languageEnglish (US)
Pages (from-to)2745-2753
Number of pages9
JournalJournal of physical chemistry
Volume87
Issue number15
DOIs
StatePublished - Jan 1 1983

Fingerprint

Potential energy surfaces
walking
potential energy
Geometry
geometry
Hessian matrices
approximation
Molecular structure
beds
molecular structure
costs
scaling
Molecules
radii
evaluation
products
Costs
molecules

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physical and Theoretical Chemistry

Cite this

Simons, Jack ; Jørgensen, Poul ; Taylor, Hugh ; Ozment, Judy. / Walking on potential energy surfaces. In: Journal of physical chemistry. 1983 ; Vol. 87, No. 15. pp. 2745-2753.
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Simons, J, Jørgensen, P, Taylor, H & Ozment, J 1983, 'Walking on potential energy surfaces', Journal of physical chemistry, vol. 87, no. 15, pp. 2745-2753. https://doi.org/10.1021/j100238a013

Walking on potential energy surfaces. / Simons, Jack; Jørgensen, Poul; Taylor, Hugh; Ozment, Judy.

In: Journal of physical chemistry, Vol. 87, No. 15, 01.01.1983, p. 2745-2753.

Research output: Contribution to journalArticle

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