ring reversal (ring inversion)
The interconversion by rotation about single bonds (coupled with angle
deformation in the transition state
) of cyclic conformers having equivalent ring shapes (e.g.
though not necessarily equivalent spatial positions of substituents (e.g.
PAC, 1996, 68, 2193
(Basic terminology of stereochemistry (IUPAC Recommendations 1996))
on page 2217