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topomerization

Also contains definition of: topomers

The identity reaction leading to exchange of the positions of identical ligands. The indistinguishable molecular entities involved are called topomers. For example in the reaction below the two identical ligating atoms Na and Nb are interchanged by rotation about the C-aryl bond but may be identified by NMR spectroscopy. This is a degenerate isomerization.
T06396
Source:
PAC, 1996, 68, 2193 (Basic terminology of stereochemistry (IUPAC Recommendations 1996)) on page 2220
InChI=1/C5H4N2O/c8-4-5-6-2-1-3-7-5/h1-4H
CCOXWRVWKFVFDG-UHFFFAOYAQ
InChI=1/C5H4N2O/c8-4-5-6-2-1-3-7-5/h1-4H
CCOXWRVWKFVFDG-UHFFFAOYAQ
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IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8. doi:10.1351/goldbook.
Last update: 2014-02-24; version: 2.3.3.
DOI of this term: doi:10.1351/goldbook.T06396.
Original PDF version: http://www.iupac.org/goldbook/T06396.pdf. The PDF version is out of date and is provided for reference purposes only. For some entries, the PDF version may be unavailable.
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