López-Vidal Eva M, García Marcos D, Peinador Carlos, Quintela José M
Centro de Investigaciones Científicas Avanzadas (CICA) and Departamento de Química Fundamental, Universidade da Coruña, Facultad de Ciencias, Rúa da Fraga 10, 15071A Coruña (Spain).
Chemistry. 2015 Jan 26;21(5):2259-67. doi: 10.1002/chem.201405297. Epub 2014 Dec 8.
On the attempted synthesis of a series of homo- and heterotrimetallic [2]catenanes by the self-assembly of a 2-(pyridin-4-ylmethyl)-2,7-diazapyrenium ligand, (ethylenediamine)palladium(II) or platinum(II) nitrate, and a dioxoaryl bis(N-monoalkyl-4,4'-bipyridinium) salt as building blocks, both the one-pot direct self-assembly of the components and the so called "magic ring" approach fail to produce the expected trinuclear [2]catenanes under thermodynamically driven conditions. However, one of the target supramolecules is obtained by following a stepwise protocol, consisting of the threading of a dinuclear Pt(II) metallacycle and the dioxoaryl bis(N-monoalkyl-4,4'-bipyridinium) axle, followed by kinetically controlled Pt(II) -directed cyclization of the corresponding pseudorotaxane.
通过2-(吡啶-4-基甲基)-2,7-二氮杂芘配体、(乙二胺)钯(II)或硝酸铂(II)以及二氧芳基双(N-单烷基-4,4'-联吡啶鎓)盐作为构建单元自组装来尝试合成一系列同核和异核三金属[2]连环烷时，在热力学驱动条件下，各组分的一锅直接自组装以及所谓的“魔环”方法均未能生成预期的三核[2]连环烷。然而，通过遵循逐步方案可获得一种目标超分子，该方案包括将双核Pt(II)金属环和二氧芳基双(N-单烷基-4,4'-联吡啶鎓)轴进行穿线，然后对相应的准轮烷进行动力学控制的Pt(II)导向环化。
