4-氨基-2-氯苯甲酸
4-Amino-2-chloro-benzoic acid.
作者信息
Khan Muneeb Hayat, Khan Islam Ullah, Akkurt Mehmet
出版信息
Acta Crystallogr Sect E Struct Rep Online. 2011 Sep 1;67(Pt 9):o2247. doi: 10.1107/S1600536811030728. Epub 2011 Aug 6.
The title compound, C(7)H(6)ClNO(2), crystallizes with two roughly planar mol-ecules in the asymmetric unit (r.m.s. deviations = 0.073 and 0.074 Å). The amine H atoms of the two mol-ecules have opposite orientations. In the crystal, mol-ecules are linked into dimers by pairs of O-H⋯O hydrogen bonds, generating R(2) (2)(8) loops. N-H⋯N and N-H⋯Cl hydrogen bonds link the dimers into a three-dimensional network. The crystal studied was found to be a racemic twin.
标题化合物C₇H₆ClNO₂在不对称单元中以两个大致平面的分子结晶（均方根偏差分别为0.073和0.074 Å）。两个分子的胺氢原子具有相反的取向。在晶体中，分子通过O—H⋯O氢键对连接成二聚体，形成R₂²(8)环。N—H⋯N和N—H⋯Cl氢键将二聚体连接成三维网络。所研究的晶体被发现是一种外消旋孪晶。
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