Issue 5, 2015

A heterometallic macrocycle as a redox-controlled molecular hinge

Abstract

The ability to modify the structure of nanoscopic assemblies in a controlled fashion is an important prerequisite for the creation of functional supramolecular systems. Here, we describe a heterometallic Pt2Cu2-macrocycle which behaves as a molecular hinge. A square-planar Pt(II) complex with pendent 2-formylpyridine groups was synthesized and structurally characterized. Condensation of the complex with benzylamine followed by reaction with Cu(MeCN)4BF4 resulted in the formation of a rectangular Pt2Cu2-macrocycle. Upon chemical oxidation of the Cu centers, the macrocycle folds up to adopt a butterfly-like geometry in which the Pt centers approach each other. This process can be reversed by chemical reduction.

Graphical abstract: A heterometallic macrocycle as a redox-controlled molecular hinge

Supplementary files

Article information

Article type
Paper
Submitted
29 Oct 2014
Accepted
09 Dec 2014
First published
18 Dec 2014

Dalton Trans., 2015,44, 2252-2258

Author version available

A heterometallic macrocycle as a redox-controlled molecular hinge

C. Schouwey, M. Papmeyer, R. Scopelliti and K. Severin, Dalton Trans., 2015, 44, 2252 DOI: 10.1039/C4DT03331K

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