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Issue 7, 2013
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Neutral bis-macrocyclic nickel(ii) and copper(ii) complexes as π-donor receptors

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Abstract

A new type of hetero- and homo-polynuclear complexes of copper(II) and nickel(II) containing 1,2,3-triazole groups in polymethylene chains have been synthesized and characterized using NMR and electrochemical methods. The triazole link facilitates the synthesis of hetero-dinuclear macrocyclic complexes. Introducing the triazole unit into the complex structure can lead to increased stability of the bis-macrocyclic system and to obtain electroactive receptors for electron-deficient molecules. Intermolecular interactions between new bis-macrocyclic donors and a chosen acceptor – 7,7,8,8-tetracyanoquinodimethane (TCNQ) have been studied by voltammetry. Normal pulse voltammetry with varying initial potentials, Ei, was found to be a convenient tool to follow subtle changes of the electrochemical behavior of the redox centers due to interactions between the π-donor, bis-macrocyclic complex, and the acceptor, TCNQ molecule. The copper(II) bis-macrocyclic compound functions as a receptor able to accommodate the small organic compound in the macrocyclic cavity. This brings together transition metal ions and organic substrates within the same supramolecular structure.

Graphical abstract: Neutral bis-macrocyclic nickel(ii) and copper(ii) complexes as π-donor receptors

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Publication details

The article was received on 08 Oct 2012, accepted on 13 Nov 2012 and first published on 13 Nov 2012


Article type: Paper
DOI: 10.1039/C2DT32386A
Dalton Trans., 2013,42, 2382-2391

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    Neutral bis-macrocyclic nickel(II) and copper(II) complexes as π-donor receptors

    I. Mames, U. E. Wawrzyniak, M. Woźny, R. Bilewicz and B. Korybut-Daszkiewicz, Dalton Trans., 2013, 42, 2382
    DOI: 10.1039/C2DT32386A

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