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CrIII as an alternative to RuII in metallo-supramolecular chemistry

Authors
Suffren, Yan
Pelé, Anne-Laure
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Published in Dalton Transactions. 2017, vol. 46, no. 28, p. 8992-9009
Abstract Compared to divalent ruthenium coordination complexes, which are widely exploited as parts of multi-component photonic devices, optically active trivalent chromium complexes are under-represented in multi-metallic supramolecular architectures performing energy conversion mainly because of the tricky preparation of stable heteroleptic CrIII building blocks. We herein propose some improvements with the synthesis of a novel family of kinetically inert heteroleptic bis-terdentate mononuclear complexes, which can be incorporated into dinuclear rod-like dyads as a proof-of-concept. The mechanism and magnitude of intermetallic Cr⋯Cr communication have been unraveled by a combination of magnetic, photophysical and thermodynamic investigations. Alternated aromatic/alkyne connectors provided by Sonogashira coupling reactions emerge as the most efficient wires for long-distance communication between two chromium centres bridged by Janus-type back-to-back bis-terdentate receptors.
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Other version: http://xlink.rsc.org/?DOI=C7DT01747B
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Research group Groupe Piguet
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ZARE, Davood et al. CrIII as an alternative to RuII in metallo-supramolecular chemistry. In: Dalton Transactions, 2017, vol. 46, n° 28, p. 8992-9009. https://archive-ouverte.unige.ch/unige:95682

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Deposited on : 2017-07-26

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