NMR-Based Structure Determination of an Intertwined Coordination Cage Resembling a Double Trefoil Knot

被引：77

作者：

Engelhard, David M. ^{[1
]}

Freye, Sabrina ^{[1
]}

Grohe, Kristof ^{[1
]}

John, Michael ^{[1
]}

Clever, Guido H. ^{[1
]}

机构：

[1] Univ Gottingen, Inst Anorgan Chem, D-37077 Gottingen, Germany

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2012年 / 51卷 / 19期

关键词：

host-guest systems; self-assembly; structure elucidation; supramolecular chemistry; trefoil knots; ENCAPSULATION; COPPER(I); PALLADIUM(II); COMPLEX; MOLECULES; TOPOLOGY; LIGANDS; GUESTS; RINGS;

D O I：

10.1002/anie.201200611

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A knot that ties itself! The entanglement of six ligands coordinated to three Pd II ions results in the quantitative formation of a walnut-shaped supramolecular cage. Each of the two hemispheres resembles a trefoil knot. The solution-state structure was elucidated using a combination of NMR experiments and calculated model structures. The final structure was selected from several models by topological analyses and encapsulation of chiral camphorsulfonate ions. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：4747 / 4750

页数：4