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Mechanical Conformers of Keyring Catenanes

机译:键环连烷的机械塑造器

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摘要

Interlocked molecules exhibit structural isomerization that is different from that of molecules whose connectedness is solely through covalent bonds. A mechanical bond, or the interlocking of components, provides a rich conformational landscape. The ability of synthetic chemists to design directional motion between these mechanical conformers suggests mechanical bonds as building blocks in the design of synthetic molecular motors and machines. Here we examine the complexity of mechanical conformers of radial catenanes with n anisotropically repulsive rings (coined "keyrings") threaded onto a single central ring for n = 10. For a given number of rings, n, the ratio of the key length to the main ring radius, lambda, determines the mechanical conformer. We show that this system displays symmetrical in-plane conformers for short keys and co-conformers of lower symmetry where the keys lie out of the plane for longer keys.
机译:互锁分子表现出结构异构化,其不同于其关联性仅通过共价键的分子。 机械键或部件的互锁,提供丰富的构象景观。 合成化学家在这些机械整形器之间设计方向运动的能力表明了在合成分子电机和机器设计中的建筑块的机械键。 在这里,我们研究径向粘面烷的机械整体器的复杂性与N个各向异性的排斥环(被卷曲的“键控”)螺纹上螺纹到N& = 10的单个中心环上。对于给定数量的环,n,键长的比率 到主环半径,Lambda确定机械符合特。 我们表明该系统对于短键和较低对称的短键和共符合子的相互形式表示,键位于平面以进行更长的键。

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