Invited for this month's cover picture is the group of Professor David Bryce at the University of Ottawa. The cover picture shows a stylized depiction of the mechanochemical halogen‐bond induced cocrystallization of 3‐iodoethynylpyridine with tetraphenylphosphonium bromide. Read the full text of their Full Paper at 10.1002/open.201900194.

中文翻译：

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基于3-碘乙炔基吡啶和3-碘乙炔基苯甲酸的阴离子配位结构的机械化学制备。

受邀拍摄本月封面图片的是渥太华大学大卫·布莱斯教授的团队。封面图片显示了机械化学卤素键诱导 3-碘乙炔基吡啶与四苯基溴化鏻共结晶的程式化描述。请阅读其全文： 10.1002/open.201900194。