eclipsing strain

Synonyms: bond opposition strain, Pitzer strain, torsional strain
https://doi.org/10.1351/goldbook.E01886
@I03130@ @S06037@ present due to @N04183@ between two @E01884@ atoms or groups. It is, for example, one of the interactions responsible for the existence of a @R05408@ and hence @F02520@ 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]