A single crystal X-ray structural study of a diprotonated bis(1,7-diaza-12-crown-4), crystallised from a methanolic solution, reveals that a methanol molecule is bound to each protonated crown via both [O–H ⋯ N] and [N+-H ⋯ O] hydrogen bonds.
                                    对从
甲醇溶液中结晶出来的双质子化双(1,7-二氮杂-
12-冠-4)进行的单晶 X 射线结构研究发现,一个
甲醇分子通过 [O-H ⋯ N] 和 [N+-H ⋯ O] 氢键与每个质子化冠结合。