🥼organic chemistry review

Angle strain

Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025

Definition

Angle strain occurs when the bond angles in a molecule, especially in cycloalkanes, deviate from their ideal values, leading to increased instability and reactivity. It is a type of strain energy that affects the stability of cyclic compounds by forcing the bond angles to be either larger or smaller than what is energetically favorable.