title: (E)-2-(5,5-Dimethyl-hexa-hydro-pyrimidin-2-yl)-4-(phenyl-diazen-yl)phenol.
abstract: In the title Schiff base, C(18)H(22)N(4)O, the hexa-hydro-pyrimidinyl ring adopts a chair conformation. The dihedral angle between the aromatic rings of the 4-(2-phenyl-diazen-yl)phenol unit is 15.7 (1)°. There is an intra-molecular O-H⋯N hydrogen bond between the hydroxyl group and an N atom of the hexa-hydro-pyimidinyl unit. Inter-molecular N-H⋯O and N-H⋯N hydrogen bonds give rise to a layer structure.
authors.forename: Iran
authors.initials: I
authors.lastname: Sheikhshoaie
authors.forename: Niaz
authors.initials: N
authors.lastname: Monadi
authors.forename: Alireza
authors.initials: A
authors.lastname: Abbasi