Synonyms: bond opposition strain, Pitzer strain, torsional strain
https://doi.org/10.1351/goldbook.E01886
Intramolecular
strain
present due to
nonbonded interactions
between two
eclipsed
atoms or groups. It is, for example, one of the interactions responsible for the existence of a
rotational barrier
and hence
restricted rotation
about the C–C bond in ethane. It has also been called Pitzer strain, torsional strain and bond opposition strain.
Source:
PAC, 1996, 68, 2193. (Basic terminology of stereochemistry (IUPAC Recommendations 1996)) on page 2206 [Terms] [Paper]