title: 2,2'-[Imidazolidine-1,3-diylbis(methyl-ene)]diphenol.
abstract: In the title mol-ecule, C(17)H(20)N(2)O(2), the imidazolidine ring adopts a twist conformation. The mean plane through the five atoms of the imidazolidine ring makes dihedral angles of 70.18 (4) and 74.14 (4)° with the planes of the two aromatic rings. The dihedral angle between the benzene rings is 53.11 (5)°. Both phenol -OH groups form intra-molecular hydrogen bonds to the N atoms, with graph-set motif S(6). In the crystal, pairs of O-H⋯O hydrogen bonds link the mol-ecules into dimers with R(4) (4)(18) ring motifs. The crystal packing is further stabilized by C-H⋯O and weak C-H⋯π inter-actions.
authors.forename: Augusto
authors.initials: A
authors.lastname: Rivera
authors.forename: Luz Stella
authors.initials: LS
authors.lastname: Nerio
authors.forename: Jaime
authors.initials: J
authors.lastname: Ríos-Motta
authors.forename: Karla
authors.initials: K
authors.lastname: Fejfarová
authors.forename: Michal
authors.initials: M
authors.lastname: Dušek