Yu Chua-Hua
Orderd Matter Science Research Center, Southeast University, Nanjing 211189, People's Republic of China.
Acta Crystallogr Sect E Struct Rep Online. 2012 Jul 1;68(Pt 7):o1989. doi: 10.1107/S1600536812023914. Epub 2012 Jun 2.
The asymmetric unit of the title compound, C(5)H(5)NO·C(8)H(6)O(4), contains one o-phthalate acid mol-ecule and one pyridin-2-ol mol-ecule, which exists in a zwitterionic form. In the o-phthalate acid mol-ecule, the carboxyl-ate groups are twisted from the benzene ring by dihedral angles of 13.6 (1)° and 73.1 (1)°; the hy-droxy H atom in the latter group is disordered over two positons in a 1:1 ratio. In the crystal, O-H⋯O and N-H⋯O hydrogen bonds link the mol-ecules into zigzag chains in [-101].
标题化合物C(5)H(5)NO·C(8)H(6)O(4)的不对称单元包含一个邻苯二甲酸分子和一个呈两性离子形式存在的吡啶-2-醇分子。在邻苯二甲酸分子中,羧酸根基团与苯环的扭转角分别为13.6 (1)°和73.1 (1)°;后一个基团中的羟基H原子在两个位置上无序分布,比例为1:1。在晶体中,O—H⋯O和N—H⋯O氢键将分子连接成[-101]方向的锯齿链。