2,3-Dihydro-1H-pyrrolizin-1-one

Abstract

There are two nearly identical mol­ecules in the asymmetric unit of the title compound, C7H7NO. The mol­ecules are nearly planar (r.m.s. deviations of 0.025 and 0.017 Å) and oriented at a dihedral angle of 28.98 (3)°. The two mol­ecules are linked by a C—H⋯O hydrogen bond. In the crystal, weak inter­molecular C—H⋯O hydrogen bonds link the mol­ecules into zigzag chains along the c axis.