torsional stereoisomers

https://doi.org/10.1351/goldbook.T06404
@S05984@ that can be interconverted (actually or conceptually) by torsion about a bond axis. This includes E,Z-isomers of @A00224@, @A00511@ and @R05407@.
Source:
PAC, 1996, 68, 2193. (Basic terminology of stereochemistry (IUPAC Recommendations 1996)) on page 2221 [Terms] [Paper]