J. Ondracek et al., STRUCTURE OF O-(SALICYLIDENEAMINO)PHENOL HYDROCHLORIDE, Acta crystallographica. Section C, Crystal structure communications, 49, 1993, pp. 1948-1949
The cation [C13H12NO2](+) [(2-hydroxyphenyl)(salicylidene)ammonium] is
nearly planar with an angle of 7.3 (1)degrees between planes C2-C7 an
d C10-C15 of the phenyl rings. The molecules are linked together by O1
-HO1...Cl...HO16-O16 planar hydrogen bonds between the hydroxyl groups
.