Anitha R, Athimoolam S, Bahadur S Asath, Gunasekaran M
Acta Crystallogr Sect E Struct Rep Online. 2011 Nov;67(Pt 11):o3035. doi: 10.1107/S1600536811041948. Epub 2011 Oct 29.
The title compound, C(6)H(7)N(2)O(2) (+)·Br(-), is isomorphous with 2-nitro-anilinium chloride and contains an characteristic intra-molecular N-H⋯O hydrogen bond, forming an S(6) motif. Inter-molecular N-H⋯Br hydrogen bonds occur in the crystal structure. Two zigzag chains of C(2) (1)(4) motifs extend along the b-axis direction. These primary chain motifs inter-sect like a double helix structure, leading to R(6) (3)(12) ring motifs, which are arranged in tandem along the b axis. Hence, hydro-philic layers are generated at z = 1/4 and 3/4, which are sandwiched between alternate hydro-phobic layers across z = 0 and 1/2.
标题化合物C(6)H(7)N(2)O(2) (+)·Br(-)与2-硝基苯胺氯化物同晶型，含有一个特征性的分子内N-H⋯O氢键，形成S(6) motif。晶体结构中存在分子间N-H⋯Br氢键。两条C(2) (1)(4) motif的锯齿链沿b轴方向延伸。这些主链motif像双螺旋结构一样交叉，形成R(6) (3)(12)环motif，它们沿b轴串联排列。因此，在z = 1/4和3/4处产生亲水层，这些亲水层夹在z = 0和1/2处交替的疏水层之间。
