title: (E)-2-[(2-Ethyl-phen-yl)iminiometh-yl]-6-hydroxy-phenolate.
abstract: The mol-ecule of the title compound, C(15)H(15)NO(2), crystallizes in a zwitterionic form, and displays an E configuration about the C=N bond. The dihedral angle between the two aromatic rings is 5.59 (6)°. An intra-molecular N-H⋯O hydrogen bond generates an S(6) ring motif. In the crystal structure, pairs of mol-ecules are linked into centrosymmetric R(2) (2)(10) dimers by pairs of O-H⋯O hydrogen bonds. Aromatic π-π inter-actions are observed between the benzene rings of adjacent dimers [centroid-centroid distance = 3.4808 (7) Å].
authors.forename: Serap
authors.initials: S
authors.lastname: Yazıcı
authors.forename: Ciğdem
authors.initials: C
authors.lastname: Albayrak
authors.forename: Ismail
authors.initials: I
authors.lastname: Gümrükçüoğlu
authors.forename: Ismet
authors.initials: I
authors.lastname: Senel
authors.forename: Orhan
authors.initials: O
authors.lastname: Büyükgüngör