Organometallic boxes built from 5,10,15,20-tetra(4-pyridyl)porphyrin panels and hydroxyquinonato-bridged diruthenium clips
Graphical abstract
Self-assembly of 5,10,15,20-tetra(4-pyridyl)porphyrin tetradentate panels with dinuclear arene ruthenium clips [Ru2(η6-arene)2(dhbq)Cl2] (arene = C6H5Me, p-PriC6H4Me, C6Me6; dhbq = 2,5-dihydroxy-1,4-benzoquinonato) affords the cationic organometallic boxes of the general formula [Ru8(η6-arene)8(tpp-H2)2(dhbq)4]8+. These cationic cages are isolated as their triflate salts and characterised by mass spectrometry, NMR and IR spectroscopy. The molecular structure was deduced by one and two-dimensional NMR experiments.
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Acknowledgements
We are grateful to the Fonds National Suisse de la Recherche Scientifique (Grant 200020-119760). A generous loan of ruthenium chloride hydrate from the Johnson Matthey Technology Centre is gratefully acknowledged.
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