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ERIC Number: EJ826728
Record Type: Journal
Publication Date: 2008-May
Pages: 8
Abstractor: As Provided
Reference Count: 29
ISSN: ISSN-0021-9584
Concomitant Ordering and Symmetry Lowering
Boo, William O. J.; Mattern, Daniell L.
Journal of Chemical Education, v85 n5 p710-717 May 2008
Examples of concomitant ordering include magnetic ordering, Jahn-Teller cooperative ordering, electronic ordering, ionic ordering, and ordering of partially-filled sites. Concomitant ordering sets in when a crystal is cooled and always lowers the degree of symmetry of the crystal. Concomitant ordering concepts can also be productively applied to many molecules, ions, and clusters. As an educational aid, the 17 plane groups may be generated by imposing concomitant patterns on designs belonging to p4mm and p6mm, and ornamental designs may be created by applying concomitant patterns on the regular tilings. (Contains 7 figures.)
Division of Chemical Education of the American Chemical Society. Subscription Department, P.O. Box 1267, Bellmawr, NJ 08099-1267. Tel: 800-691-9846; Tel: 856-931-5825; Fax: 856-931-4115; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A