title: 2,2'-[1-(2,4,6-Trichlorophenyl)-1H-1,2,4-triazole-3,5-diyl]diphenol.
abstract: The title compound, C(20)H(12)Cl(3)N(3)O(2), was synthesized by the reaction of 2-(2-hydroxy-phen-yl)benz[e][1,3]oxazin-4-one with 2,4,6-trichloro-phenyl-hydrazine in ethanol. The trichloro-phenyl ring is nearly perpendicular to the triazole plane [dihedral angle 80.56 (8)°], whereas the two hydroxy-phenyl rings are approximately coplanar with the triazole ring [dihedral angles of 2.79 (12) and 8.00 (14)°]. Intra-molecular O-H⋯N hydrogen bonding is observed between the hydroxy-phenyl and triazole rings.
authors.forename: Zhong-Shu
authors.initials: ZS
authors.lastname: Li
authors.forename: Xiu-Bing
authors.initials: XB
authors.lastname: Li
authors.forename: Bai-Wang
authors.initials: BW
authors.lastname: Sun