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Issue 44, 2013
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Multi-pyridine decorated Fe(II) and Ru(II) complexes by Pd(0)-catalysed cross couplings: new building blocks for metallosupramolecular assemblies

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Abstract

Eight metal complexes of the type [M(tpy)2]2+ (tpy = 2,2′:6′,2′′-terpyridine) featuring four pendant pyridine rings are reported and characterised by NMR, MS, absorption spectroscopy and electrochemical methods. Palladium-mediated Suzuki and Sonogashira cross-coupling reactions were performed on both free 4′-(3,5-dibromophenyl)-tpy and its Ru(II) complex in good yields. The ready N-alkylation of the pendant pyridyl units has significant influence on the absorption and electrochemical reduction of the complexes, processes which are localised on the periphery and leaves the [Ru(tpy)2]2+ core essentially unaffected. The binding of metal ions by the free pyridines is also demonstrated as means of assembling larger ordered non-covalent structures.

Graphical abstract: Multi-pyridine decorated Fe(ii) and Ru(ii) complexes by Pd(0)-catalysed cross couplings: new building blocks for metallosupramolecular assemblies

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Publication details

The article was received on 26 Aug 2013, accepted on 01 Sep 2013 and first published on 13 Sep 2013


Article type: Paper
DOI: 10.1039/C3DT52331D
Dalton Trans., 2013,42, 15625-15636

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    Multi-pyridine decorated Fe(II) and Ru(II) complexes by Pd(0)-catalysed cross couplings: new building blocks for metallosupramolecular assemblies

    J. Yang, J. K. Clegg, Q. Jiang, X. Lui, H. Yan, W. Zhong and J. E. Beves, Dalton Trans., 2013, 42, 15625
    DOI: 10.1039/C3DT52331D

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