5-(3-Fluoro­phen­yl)-1-phenyl­pyrazolidin-3-one

In the mol­ecule of the title compound, C(15)H(13)FN(2)O, the phenyl and fluorophenyl rings are oriented at a dihedral angle of 77.92 (3)°. The pyrazolidine ring adopts an envelope conformation. An intra­molecular C—H⋯N hydrogen bond results in the formation of a five-membered ring adopting an envelope conformation. In the crystal structure, inter­molecular N—H⋯O and C—H⋯O hydrogen bonds link the mol­ecules. There are C—H⋯π contacts between between aromatic H atoms and the phenyl and fluorophenyl rings. A π–π contact between phenyl rings [centroid–centroid distance = 3.926 (1) Å] is also observed.