noun
ring inversion; ring flip
In chemistry, the conformational change where a cyclic molecule flips from one chair form to another, interchanging axial and equatorial substituents.
シクロヘキサンの環反転は室温で非常に速い。
The ring inversion of cyclohexane is very fast at room temperature.
配座 (conformation) refers to the spatial arrangement of atoms in a molecule, while 環反転 specifically describes the dynamic process of flipping between conformations.
Compound of 環 (ring) and 反転 (inversion, reversal). The term is a direct calque from English 'ring inversion'.