title: 2,4-Dichloro-6-nitro-benzoic acid.
abstract: The title compound, C(7)H(3)Cl(2)NO(4), was prepared by the reaction of 2,4-dichloro-6-nitro-toluene with 20% HNO(3) solution at 430 K. The carboxyl and nitro groups are twisted by 82.82 (12) and 11.9 (2)°, respectively, with respect to the benzene ring. The crystal structure is stabilized by O-H⋯O hydrogen bonding between carboxyl groups and weak C-H⋯O hydrogen bonding between the nitro group and the benzene ring of an adjacent mol-ecule.
authors.affiliation: Department of Chemistry, Zhejiang University, Hangzhou 310027, People's Republic of China.
authors.forename: Hai-Lian
authors.initials: HL
authors.lastname: Liu
authors.forename: Zhi-Qiang
authors.initials: ZQ
authors.lastname: Du