title: meso-4,5-Diphenyl-imidazolidin-2-one.
abstract: The crystal structure determination of the title compound, C(15)H(14)N(2)O, confirms the cis relationship between the phenyl groups at the 4- and 5-positions on the imidazolidine ring. The dihedral angle between the two phenyl rings is 48.14 (6)°. In the crystal structure, inter-molecular N-H⋯O hydrogen bonds link mol-ecules into centrosymmetric dimers. These dimers are, in turn, linked into a two-dimensional network via weak N-H⋯π(arene) inter-actions and π-π stacking inter-actions with centroid-centroid distances of 3.6937 (11) Å.
authors.forename: Henry
authors.initials: H
authors.lastname: Galas
authors.forename: Russell D
authors.initials: RD
authors.lastname: Viirre
authors.forename: Alan J
authors.initials: AJ
authors.lastname: Lough