ABSTRACT Inherent movement of a macrocycle comprising a multi-site hydrogen-bonding Hamilton-type receptor in a series of [2]rotaxanes was investigated by dynamic and VT NMR. In these rotaxanes, the varying nature and number of hydrogen-bond motifs and stations on the molecular axles influenced ring dynamics. Triazole stations interact selectively by hydrogen bonding with the isophthalamide amide bonds present in the Hamilton macrocycle and fast shuttling (72 kHz at 25°C) was observed in a two-station variant. Graphical abstract

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[2]轮烷中大环汉密尔顿受体穿梭动力学

摘要 通过动态和 VT NMR 研究了包含一系列 [2] 轮烷中的多位点氢键汉密尔顿型受体的大环的固有运动。在这些轮烷中，分子轴上氢键基序和站点的不同性质和数量影响了环动力学。三唑站通过氢键与汉密尔顿大环中存在的间苯二甲酰胺键选择性地相互作用，并在两站变体中观察到快速穿梭（25°C 时为 72 kHz）。图形概要