Volume 20, Issue S8 pp. 1-47
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Development of a flexible intra- and intermolecular empirical potential function for large molecular systems

Tetsuro Oie

Tetsuro Oie

Departments of Chemistry and Biochemistry, University of Kansas, Lawrence, Kansas 66045, U.S.A.

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Gerald M. Maggiora

Corresponding Author

Gerald M. Maggiora

Departments of Chemistry and Biochemistry, University of Kansas, Lawrence, Kansas 66045, U.S.A.

Departments of Chemistry and Biochemistry, University of Kansas, Lawrence, Kansas 66045, U.S.A.Search for more papers by this author
Ralph E. Christoffersen

Ralph E. Christoffersen

Departments of Chemistry and Biochemistry, University of Kansas, Lawrence, Kansas 66045, U.S.A.

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David J. Duchamp

David J. Duchamp

The Upjohn Company, Kalamazoo, Michigan 49001, U.S.A.

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First published: 5/7 March 1981
Citations: 90

Abstract

The development of a flexible intra- and intermolecular empirical potential function is described, which is designed for investigating the geometric structure of large molecular systems. The intramolecular components in the potential consist of harmonic bond stretching and angle bending terms, out-of-plane deformation terms, and torsional terms; intermolecular components include nonbonding, hydrogen bonding, and electrostatic terms. Bond lengths, angles, and torsional angles are predicted to within 2% of experiment, with most cases being within 1%. The suitability of the intermolecular potential was tested by crystal packing calculations; in all cases the results obtained were in excellent agreement with experiment.

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