Sivaramkumar M S, Velmurugan R, Sekar M, Ramesh P, Ponnuswamy M N
Acta Crystallogr Sect E Struct Rep Online. 2010 Jun 26;66(Pt 7):o1821. doi: 10.1107/S1600536810024220.
In the title compound, C(5)H(7)N(2) (+)·C(6)H(2)N(3)O(7) (-), there are two crystallographically independent cations and anions (A and B) in the asymmetric unit. In both picrate anions, one of the nitro groups lies in the plane of the benzene ring [r.m.s. deviations = 0.014 (2) and 0.014 (2) Å for anions A and B, respectively] and the other two are twisted away by 39.0 (2) and 18.8 (2)° in A, and 18.2 (1) and 2.5 (2)° in B. In the crystal, the cations and anions are linked by inter-molecular N-H⋯O and C-H⋯O hydrogen bonds, forming a two-dimensional network.
在标题化合物C₅H₇N₂⁺·C₆H₂N₃O₇⁻中，不对称单元中有两个晶体学独立的阳离子和阴离子（A和B）。在两个苦味酸盐阴离子中，其中一个硝基位于苯环平面内 [阴离子A和B的均方根偏差分别为0.014 (2) 和0.014 (2) Å]，另外两个在A中扭转了39.0 (2)° 和18.8 (2)°，在B中扭转了18.2 (1)° 和2.5 (2)°。在晶体中，阳离子和阴离子通过分子间N-H⋯O和C-H⋯O氢键相连，形成二维网络。
