title: 1,1'-[o-Phenyl-enebis(nitrilo-methyl-idyne)]di-2-naphthol ethanol hemisolvate.
abstract: The asymmetric unit of the title compound, C(28)H(20)N(2)O(2)·0.5C(2)H(5)OH, contains two independent mol-ecules of 1,1'-[o-phenyl-enebis(nitrilo-methyl-idyne)]di-2-naphthol, denoted A and B, and one ethanol solvent mol-ecule. The hydr-oxy groups are involved in intra-molecular O-H⋯N hydrogen bonds influencing the mol-ecular conformations, which are slightly different in mol-ecules A and B, where the two bicyclic systems form dihedral angles of 51.93 (9) and 58.52 (9)°, respectively. In the crystal structure, a number of short inter-molecular C⋯C contacts with distances of less than 3.5 Å suggest the existence of π-π inter-actions, which contribute to the stability of the crystal packing.
authors.forename: Tuan-Jie
authors.initials: TJ
authors.lastname: Meng
authors.forename: Xiao-Qiang
authors.initials: XQ
authors.lastname: Qin
authors.forename: Wen-Xian
authors.initials: WX
authors.lastname: Zhao
authors.forename: Xian-Qiang
authors.initials: XQ
authors.lastname: Huang
authors.forename: Guo-Dong
authors.initials: GD
authors.lastname: Wei