Balasubramani Kasthuri, Fun Hoong-Kun
X-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia.
Acta Crystallogr Sect E Struct Rep Online. 2009 Jun 6;65(Pt 7):o1519. doi: 10.1107/S1600536809021011.
In the title compound, C(5)H(8)N(3) (+)·C(7)H(5)O(2) (-), the pyridine N atom is protonated. The carboxyl-ate group of the benzoate anion is twisted away from the attached ring by 10.91 (9)°. In the crystal structure, N-H⋯O hydrogen bonds between 2,3-diamino-pyridinium cations and benzoate anions, and π-π inter-actions between the pyridinium rings [centroid-centroid distance = 3.6467 (9) Å] form a two-dimensional network parallel to (001). In the network, N-H⋯O hydrogen bonds form R(2) (2)(8) and R(2) (1)(7) ring motifs.
在标题化合物C(5)H(8)N(3) (+)·C(7)H(5)O(2) (-)中，吡啶氮原子被质子化。苯甲酸根阴离子的羧酸根基团与相连的环扭转了10.91 (9)°。在晶体结构中，2,3 - 二氨基吡啶鎓阳离子与苯甲酸根阴离子之间的N - H⋯O氢键，以及吡啶鎓环之间的π - π相互作用[质心 - 质心距离 = 3.6467 (9) Å]形成了平行于(001)的二维网络。在该网络中，N - H⋯O氢键形成了R(2) (2)(8)和R(2) (1)(7)环模式。
