3-氯-2,4,5-三氟苯甲酸
3-Chloro-2,4,5-trifluoro-benzoic acid.
作者信息
Quan Jing, Sun Hong-Shun
机构信息
Department of Applied Chemistry, Nanjing College of Chemical Technology, Geguan Road No. 265 Nanjing, Nanjing 210048, People's Republic of China.
出版信息
Acta Crystallogr Sect E Struct Rep Online. 2013 Jan 1;69(Pt 1):o30. doi: 10.1107/S1600536812049446. Epub 2012 Dec 8.
The title compound, C7H2ClF3O2, was prepared by the chlorination of 3-amino-2,4,5-trifluoro-benzoic acid. The carboxyl group is twisted relative to the benzene ring by 6.8 (1)°. In the crystal, pairs of O-H⋯O hydrogen bonds link mol-ecules into typical centrosymmetric carb-oxy-lic acid dimers. These dimers are arranged into sheets parallel to (-103).
标题化合物C₇H₂ClF₃O₂是通过3-氨基-2,4,5-三氟苯甲酸的氯化反应制备的。羧基相对于苯环扭转了6.8 (1)°。在晶体中，O-H⋯O氢键对将分子连接成典型的中心对称羧酸二聚体。这些二聚体排列成平行于(-103)的片层。
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