'All-in-one'strategy for metalla[3]catenanes and ring-in-ring complex

• 作 者: Xian-He Bu
• 机 构: School of Materials Science and Engineering,National Institute for Advanced Materials, Nankai Univer
• 出 处: 国家科学评论（英文版）
• 发表日期: 2021年5期

Research into mechanically interlocked molecules, such as catenanes, rotaxanes and molecular knots, has been gaining momentum in recent decades, not onlybecause of their intriguing structures and topological importance, but also because of their important applications as molecular machines and nanoscale devices [1,2].In addition to traditional organic macrocycles based on covalent bonds, organometallic macrocycles or rectangles based on coordination self-assembly are promising alternative buildingblocks for the construction of molecular interlocked structures [3].Some complicated interlocked molecules based on a reversible coordination bond have been realized by one-step processes.Obviously, the realization of this comprehensive protocol requires careful selection and elaborate design of the precursor and ligand.Despite extensive research and several stunning breakthroughs in thesynthesis of interlocked molecular species, linear [3] catenanes and the ring-in-ring complex are exceedingly rare, and their targeted synthesis remains a formidable challenge [4].