title: 2-[(5-Chloro-2-oxidobenzyl-idene)aza-nium-yl]-2-methyl-propane-1,3-diol.
abstract: The title compound, C(11)H(14)ClNO(3), was prepared by the condensation of equimolar quanti-ties of 5-chloro-salicyl-aldehyde and 2-amino-2-methyl-propane-1,3-diol in methanol. In the crystal, it exists in the zwitterionic form, with nominal proton transfer from the phenol group to the imine N atom. This results in the formation of an intra-molecular N-H⋯O hydrogen bond, which generates an S(6) ring. Inter-molecular O-H⋯O hydrogen bonds arise from the hy-droxy groups, forming (001) sheets.
authors.affiliation: Hebei Key Laboratory of Bioinorganic Chemistry, College of Sciences, Agricultural University of Hebei, Baoding 071001,  People's Republic of China.
authors.forename: Dong-Yue
authors.initials: DY
authors.lastname: Wang
authors.forename: Min
authors.initials: M
authors.lastname: Liu
authors.forename: Jing-Jun
authors.initials: JJ
authors.lastname: Ma