McWilliam S A, Skakle J M, Low J N, Wardell J L, Garden S J, Pinto A C, Torres J C, Glidewell C
Department of Chemistry, University of Aberdeen, Meston Walk, Old Aberdeen AB24 3UE, Scotland.
Acta Crystallogr C. 2001 Aug;57(Pt 8):942-5. doi: 10.1107/s0108270101007053. Epub 2001 Aug 9.
In the triclinic polymorph of 2-iodo-4-nitroaniline, C(6)H(5)IN(2)O(2), space group P-1, the molecules are linked by paired N-H...O hydrogen bonds into C(8)[R(2)(2)(6)] chains of rings. These chains are linked into sheets by nitro...I interactions, and the sheets are pairwise linked by aromatic pi-pi-stacking interactions. In the orthorhombic polymorph, space group Pbca, the molecules are linked by single N-H...O hydrogen bonds into spiral C(8) chains; the chains are linked by nitro...O interactions into sheets, each of which is linked to its two immediate neighbours by aromatic pi-pi-stacking interactions, so producing a continuous three-dimensional structure.
在2-碘-4-硝基苯胺（C₆H₅IN₂O₂）的三斜晶系多晶型物中，空间群为P-1，分子通过成对的N-H...O氢键连接成C₈[R₂²(6)]环链。这些链通过硝基...碘相互作用连接成片层，且片层通过芳香π-π堆积相互作用两两相连。在正交晶系多晶型物中，空间群为Pbca，分子通过单个N-H...O氢键连接成螺旋状C₈链；这些链通过硝基...氧相互作用连接成片层，每个片层通过芳香π-π堆积相互作用与其两个紧邻片层相连，从而形成连续的三维结构。
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