macrocycles are described, containing either chloro or iodoimidazolium heterocycles. Crystal structure determinations of these macrocycles as their bromide salts are reported, as well as of the nitrate salt of the analogous bis-bromoimidazolium macrocycle. In all structures, short halogen bonds are observed in the solid state, with the nitrate complex of the bis-bromoimidazolium macrocycle containing a particularly
描述了两个新的双卤代
咪唑鎓大环,它们含有
氯或
碘咪唑鎓杂环。报道了这些大环的
溴化物盐以及类似的双
溴咪唑鎓大环
硝酸盐的晶体结构测定。在所有结构中,均会观察到处于固态的短卤素键,双
溴咪唑鎓大环的
硝酸盐络合物包含特别短的C-Br⋯O卤素键。在剑桥结构数据库中对观察到的卤素键与相关结构的比较表明,一个
氧阴离子上的一个卤素键比硝化
溴咪唑鎓
硝酸盐络合物中的一个短,这是来自
溴供体的最短的卤素键。