title: Crystal structure of 2-{(E)-[(2-hy-droxy-phen-yl)iminium-yl]meth-yl}-4-methyl-phenolate.
abstract: The title compound, C14H13NO2, exists as a zwitterion in the solid state, with the H atom of the phenol group transferred to the imine N atom. The dihedral angle between the planes of the benzene rings is 10.13 (9)°. Intra-molecular N-H⋯O hydrogen bond generate S(6) and S(5) loops. In the crystal, mol-ecules are connected by O-H⋯O hydrogen bonds, generating C(9) chains propagating in the [010] direction.
authors.affiliation: Chemistry Research Centre (Affiliated to Kuvempu University), SSMRV Degree College, Jayanagar 4th T Block, Bangalore 560 041, Karnataka, India.
authors.forename: Suresh
authors.initials: S
authors.lastname: Shalini
authors.affiliation: Govt. Science College, Nrupatunga Road, Ambedkar Veedhi, Sampangi Rama Nagar, Bengaluru 560 001, Karnataka, India.
authors.forename: C R
authors.initials: CR
authors.lastname: Girija
authors.affiliation: Department of Physics, Bhavans Sheth R. A. College of Science, Khanpur, Ahmedabad 380 001, Gujarat, India.
authors.forename: Mukesh M
authors.initials: MM
authors.lastname: Jotani
authors.affiliation: Department of Chemistry, PESIT, BSK III Stage, Bangalore 560 085, India.
authors.forename: C D
authors.initials: CD
authors.lastname: Sathish
authors.affiliation: Department of Chemistry, Jnana Sahyadri, Kuvempu University, Shankaragatta 577 451, India.
authors.forename: T V
authors.initials: TV
authors.lastname: Venkatesha
keywords: N-(salicyl­idene)aniline; Schiff base; crystal structure; hydrogen bonding; zwitterion