title: Crystal structure of (E)-2-hy-droxy-4'-meth-oxy-aza-stilbene.
abstract: The title aza-stilbene derivative, C14H13NO2 {systematic name: (E)-2-[(4-meth-oxy-benzyl-idene)amino]-phenol}, is a product of the condensation reaction between 4-meth-oxy-benzaldehyde and 2-amino-phenol. The mol-ecule adopts an E conformation with respect to the azomethine C=N bond and is almost planar, the dihedral angle between the two substituted benzene rings being 3.29 (4)°. The meth-oxy group is coplanar with the benzene ring to which it is attached, the Cmeth-yl-O-C-C torsion angle being -1.14 (12)°. There is an intra-molecular O-H⋯N hydrogen bond generating an S(5) ring motif. In the crystal, mol-ecules are linked via C-H⋯O hydrogen bonds, forming zigzag chains along [10-1]. The chains are linked via C-H⋯π inter-actions, forming a three-dimensional structure.
authors.affiliation: Department of Chemistry, Faculty of Science, Prince of Songkla University, Hat-Yai, Songkhla 90112, Thailand.
authors.forename: Suchada
authors.initials: S
authors.lastname: Chantrapromma
authors.affiliation: Department of Chemistry, Faculty of Science, Prince of Songkla University, Hat-Yai, Songkhla 90112, Thailand.
authors.forename: Narissara
authors.initials: N
authors.lastname: Kaewmanee
authors.affiliation: Department of Chemistry, Faculty of Science, Thaksin University, Phapayom, Phatthalung 93110, Thailand.
authors.forename: Nawong
authors.initials: N
authors.lastname: Boonnak
authors.affiliation: Faculty of Science and Technology, Hatyai University, Hat-Yai, Songkhla 90110, Thailand.
authors.forename: Kan
authors.initials: K
authors.lastname: Chantrapromma
authors.affiliation: Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Kingdom of Saudi Arabia.
authors.forename: Hazem A
authors.initials: HA
authors.lastname: Ghabbour
authors.affiliation: Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Kingdom of Saudi Arabia ; X-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia.
authors.forename: Hoong-Kun
authors.initials: HK
authors.lastname: Fun
keywords: anti-oxidant; anti­bacterial; aza­stilbene; crystal structure; hydrogen bonding