Symmetry Properties of Molecules (1982) (Lecture Notes in Chemistry #28)

Synopsis

The aIm of the present article is to give a critical exposition of the theory of the symmetry properties of rigid and nonrigid molecules. Despite the fact that several accounts of the subject, both technical and didactic, are now available, and despite the extensive discussion of nonrigid molecule symmetry that has been going on since the classic papers of Hougen and Longuet-Higgins, there remains a need for a unifying survey of the problem. Previous treatments have tended to emphasize one or the other particular viewpoint at the expense of a broader view. Renewed interest in the details of the symmetry classification of rotation­ vibration states of highly symmetric (octahedral) molecules has led to a reexam­ ination of the relation between conventional point group operations and permutations of identical nuclei in rigid molecules, together with a clarification of the fundamental role of the Eckart constraints and associated Eckart frame. As is shown below, analogous insights can also be obtained in the case of nonrigid molecule symmetry, where the Eckart-Sayvetz conditions provide a natural generalization of the Eckart constraints. The importance of particular definitions of the 'molecule-fixed' frame in the theory of molecular symmetry can be better appreciated by examining their dynamical origin. Chapter 1 is therefore devoted to a description of the derivation of the usual Wilson-Howard-Watson form of the molecular Hamiltonian, together with its generalization to nonrigid molecules. Particular attention is given to the intro­ duction of molecular models and use of the Eckart and Eckart-Sayvetz constraints.

Copyright:

1982

Book Details

Book Quality:

Publisher Quality

ISBN-13:

9783642931970

Related ISBNs:

9783540111849

Publisher:

Springer Berlin Heidelberg

Date of Addition:

08/15/22

Copyrighted By:

N/A

Adult content:

No

Language:

English

Has Image Descriptions:

No

Categories:

Nonfiction, Science

Submitted By:

Bookshare Staff

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This is a copyrighted book.