Studies on conformationally strained puckered ring of four membered saturated heterocycle 2-(p-bromophenyl)-N-(p-toluenesulfonyl)azetidine gives deep insight on the nonplanarity of central azetidine ring. Data indicates the ring is puckered and puckering angle is 5.28° from the plane. The stereochemical preferences of the substituents attached to the azetidine ring are also affected by non-planarity. The intermolecular CH…π interactions are responsible for tightly packed crystal lattice in the solid state