5-tetrachloro-3-iodobenzene (C6HICl4) and each of three isosteric bipyridines is reported. Even though C6HICl4 is capable of forming both halogen and hydrogen bonds the donor is found to form co-crystals with only I⋯N halogen bonds when the initial ratio of the molecular components is 2 : 1. Molecules of C6HICl4 stack in a homogeneous and face-to-face configuration which aligns the bipyridine-based acceptor molecule
据报道,
1,2,4,5-四氯-3-碘苯 (C 6 HICl 4 ) 与三种等排联
吡啶中的每一种之间形成了一系列同构三组分共晶。尽管 C 6 HICl 4能够形成卤素键和氢键,但当分子组分的初始比例为 2 : 1 时,发现供体形成仅具有 I⋯N 卤素键的共晶。C 6 HICl 4的分子以均匀且面对面的构型堆叠,将基于联
吡啶的受体分子以类似的π堆叠方向排列。结果,含有反式的共晶-1,2-双(4-
吡啶基)
乙烯在固态下发生几乎定量的[2+2]环加成反应。