orbital symmetry

orbital symmetry

[′ȯr·bəd·əl ′sim·ə·trē]
(physical chemistry)
The property of certain molecular orbitals of being carried into themselves or into the negative of themselves by certain geometrical operations, such as a rotation of 180° about an axis in the plane of the molecule, or reflection through this plane.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Carbonyl chemistry, carboxylic acid derivatives, and carbohydrates are discussed before concluding with special topics in biochemistry, orbital symmetry, and intramolecular reactions.
If the [S.sub.1] state of benzene is involved, only the meta-addition mode is allowed to occur in a concerted fashion (i.e., synchronous formation of two single bonds) according to molecular orbital symmetry rules [3, 4].
Bryce-Smith, "Orbital symmetry relationships for thermal and photochemical concerted cyclo additions to the benzene ring," Journal of the Chemical Society D, no.
If the state of benzene is involved, only meta addition is allowed to occur in a concerted fashion according to molecular orbital symmetry rules [11, 12].