The structures of the cocrystalline adducts of 3-nitrophenol (3-NP) with 1,3,5,7-tetraazatricyclo[3.3.1.13,7]decane [HMTA, (1)] as the 2:1:1 hydrate, 2C6H5NO3·C6H12N4·H2O, (1a), with 1,3,6,8-tetraazatricyclo[4.3.1.13,8]undecane [TATU (2)] as the 2:1 cocrystal, 2C6H5NO3·C7H14N4, (2a), and with 1,3,6,8-tetraazatricyclo[4.4.1.13,8]dodecane [TATD, (3)] as the 2:1 cocrystal, 2C6H5NO3·C8H16N4, (3a), are reported. In the binary crystals (2a) and (3a), the 3-nitrophenol molecules are linked via O—H...N hydrogen bonds into aminal cage azaadamantanes. In (1a), the structure is stabilized by O—H...N and O—H...O hydrogen bonds, and generates ternary cocrystals. There are C—H...O hydrogen bonds present in all three cocrystals, and in (1a), there are also C—H...O and C—H...π interactions present. The presence of an ethylene bridge in the structures of (2) and (3) defines the formation of a hydrogen-bonded motif in the supramolecular architectures of (2a) and (3a). The differences in the C—N bond lengths of the aminal cage structures, as a result of hyperconjugative interactions and electron delocalization, were analysed. These three cocrystals were obtained by the solvent-free assisted grinding method. Crystals suitable for single-crystal X-ray diffraction were grown by slow evaporation from a mixture of hexanes.
3-nitrophenol (3-NP) 与 1,3,5,7-四氮杂三环[3.3.1.13,7]癸烷 [HMTA, (1)] 的 2:1:1 水合物 2C6H5NO3-C6H12N4-H2O (1a)、与 1,3,6,8- 四氮杂三环[4.3.1.13,8]undecane [TATU, (2)] 的 2:1 共晶体 2C6H5NO3-C7H14N4, (2a),以及与 1,3,6,8-四氮杂三环[4.4.1.13,8]十二烷 [TATD, (3)] 的 2:1 共晶体 2C6H5NO3-C8H16N4, (3a)。在二元晶体(2a)和(3a)中,3-硝基苯酚分子通过 O-H...N氢键连接成氨基笼扎金刚烷。在(1a)中,该结构通过 O-H...N 和 O-H...O 氢键得到稳定,并生成三元共晶体。三种共晶体中都存在 C-H...O 氢键,在 (1a) 中还存在 C-H...O 和 C-H...π 相互作用。(2)和(3)结构中乙烯桥的存在决定了(2a)和(3a)超分子结构中氢键基团的形成。分析了由于超共轭相互作用和电子脱位而导致的氨基笼结构中 C-N 键长度的差异。这三种共晶体是通过无溶剂辅助研磨法获得的。适合进行单晶 X 射线衍射的晶体是从己烷混合物中缓慢蒸发出来的。