atropisomers
A subclass of
conformers
which can be isolated as separate
chemical species
and which arise from
restricted rotation
about a single bond, e.g.
ortho
-substituted biphenyl, 1,1,2,2-tetra-
tert
-butylethane.
See:
rotational barrier
Source:
PAC, 1996,
68
, 2193
(Basic terminology of stereochemistry (IUPAC Recommendations 1996))
on page 2200