title: 4,4'-(1,1,1,3,3,3-Hexafluoro-propane-2,2-diyl)dibenzoic acid.
abstract: In the title compound, C(17)H(10)F(6)O(4), the two benzene rings are twisted with respect to each other, making a dihedral angle of 67.43 (12)°. In the crystal, adjacent mol-ecules are linked by O-H⋯O and C-H⋯F hydrogen bonding, forming a wave-like layered supra-molecular structure.
authors.affiliation: Department of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Reaction Engineering, Yan'an University, Shaanxi 716000, People's Republic of China.
authors.forename: Long
authors.initials: L
authors.lastname: Tang
authors.forename: Ya-Pan
authors.initials: YP
authors.lastname: Wu
authors.forename: Feng
authors.initials: F
authors.lastname: Fu
authors.forename: Zhu-Lian
authors.initials: ZL
authors.lastname: Zhang
authors.forename: Dan
authors.initials: D
authors.lastname: Zheng