Rotaxanes Incorporating Two Different Coordinating Units in Their Thread: Synthesis and Electrochemically and Photochemically Induced Molecular Motions
作者:Nicola Armaroli、Vincenzo Balzani、Jean-Paul Collin、Pablo Gaviña、Jean-Pierre Sauvage、Barbara Ventura
DOI:10.1021/ja984051w
日期:1999.5.1
to a real rotaxane. As in the case of a disymmetrical copper [2]-catenane, large reversible molecular motions have been induced both electrochemically and photochemically. The driving force of the rearrangement processes is the high stability of two markedly different coordination environments for the copper(I) and copper(II) ions. In the copper(I) state, two phenanthroline units (one of the ring, on
利用铜(I)的三维模板效应合成了三种不同的多组分分子体系。这些系统包含一个配位环(含 2,9-二苯基-1,10-菲咯啉的 30 元环)和一个由两个不同配位位点(2,9-二取代-1,10-菲咯啉和5,5''-二取代-2,2':6',2''-三联吡啶单元)。字符串的每一端都可以通过一个小组或一个庞大的塞子(三(对叔丁基苯基)(4-羟基苯基)甲烷)进行功能分析,导致未塞子的化合物、半轮烷或真正的轮烷。与不对称铜 [2]-链烯的情况一样,大的可逆分子运动已被电化学和光化学诱导。重排过程的驱动力是铜(I)和铜(II)离子的两种明显不同的配位环境的高稳定性。在铜(I)状态下,两个菲咯啉单元(一个环,在...