puckered conformation

In chemistry, a conformation refers to any of the many possible spatial arrangements of atoms within a molecule that can be achieved by rotating around single covalent bonds. These arrangements are not fixed; molecules can change their shape through this rotation.1

The stability of a molecule is influenced by its conformation. Different conformations can have different energy levels due to attractive or repulsive forces between atoms. Molecules tend to favor lower-energy, more stable conformations.1

In cyclic molecules, like those with rings of carbon atoms, strain can occur if the bond angles deviate significantly from their ideal values. For instance, a three-membered ring like cyclopropane has bond angles of 60°, which is much smaller than the ideal 109.5°, leading to significant strain. However, larger rings, such as cyclohexane, can adopt non-planar, puckered conformations (like the chair or boat forms) to relieve this strain and become more stable.23