title: 6-Methyl-2-p-tolyl-4-[3-(trifluoro-meth-yl)phen-yl]pyridazin-3(2H)-one.
abstract: In the title mol-ecule, C(19)H(15)F(3)N(2)O, the benzene rings of the tolyl and trifluoro-methyl-phenyl groups form dihedral angles of 64.1 (2) and 38.5 (2)°, respectively, with the pyridazine ring. The CF(3) group is disordered over two orientations, with site-occupancy factors of ca 0.56 and 0.44.
authors.affiliation: State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, People's Republic of China.
authors.forename: Zi-Xia
authors.initials: ZX
authors.lastname: Niu
authors.forename: You-Quan
authors.initials: YQ
authors.lastname: Zhu
authors.forename: Fang-Zhong
authors.initials: FZ
authors.lastname: Hu
authors.forename: Xu-Hong
authors.initials: XH
authors.lastname: Hu
authors.forename: Hua-Zheng
authors.initials: HZ
authors.lastname: Yang