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Issue 20, 2009
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Synthesis of asymmetric supramolecular compounds using a Ni(0) catalysed homo-coupling approach

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Abstract

The synthesis and characterisation of a series of dinuclear ruthenium and osmium polypyridyl metal complexes based on the bridging ligands [5-(5′-bipyridin-2′,2″-yl)-3-(pyridin-2-yl)]-1,2,4-triazole (Hpytr-bipy), 2,2′-bis(pyridin-2″yl)-5,5′-bis(pyridin-3″-yl) (bipy-bipy) and 5,5′-bis(pyridin-2″-yl)-3,3′-bis(1,2,4-triazole) (Hpytr-Hpytr) are reported. The dinuclear complexes have been synthesised via a Ni(0) catalysed cross-coupling reaction from brominated precursors. With this approach a mixture of three products is obtained, which are separated by chromatographic methods. The compounds obtained are characterised by elemental analysis, 1H NMR, absorption and emission spectroscopy. The synthetic approach developed offers a new route to asymmetric multinuclear supramolecular structures that is complimentary to the complexes as ligands/complexes as metal approaches.

Graphical abstract: Synthesis of asymmetric supramolecular compounds using a Ni(0) catalysed homo-coupling approach

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Article information


Submitted
13 Oct 2008
Accepted
04 Dec 2008
First published
11 Feb 2009

Dalton Trans., 2009, 3923-3928
Article type
Paper

Synthesis of asymmetric supramolecular compounds using a Ni(0) catalysed homo-coupling approach

L. Cassidy, S. Horn, L. Cleary, Y. Halpin, W. R. Browne and J. G. Vos, Dalton Trans., 2009, 3923
DOI: 10.1039/B817896H

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