Constitutionally equivalent atoms or groups of a molecule which are not symmetry related.
Replacement of one of two diastereotopic atoms or groups results in the formation
of one of a pair of
diastereoisomers. In the example below the two hydrogen atoms of the
methylene group C-3 are diastereotopic.
Source:
PAC, 1996, 68, 2193
(Basic terminology of stereochemistry (IUPAC Recommendations 1996))
on page 2206
InChI=1/C4H10O/c1-3-4(2)5/h4-5H,3H2,1-2H3
InChI=1/C4H9FO/c1-3(5)4(2)6/h3-4,6H,1-2H3
InChI=1/C4H9FO/c1-3(5)4(2)6/h3-4,6H,1-2H3
BTANRVKWQNVYAZ-UHFFFAOYAZ
KUOMEPXVIPTJJX-UHFFFAOYAJ
KUOMEPXVIPTJJX-UHFFFAOYAJ
Cite as:
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.
https://doi.org/10.1351/goldbook.
