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Article Dans Une Revue Dalton Transactions Année : 2017

CrIII as an alternative to RuII in metallo-supramolecular chemistry

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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 Cr III 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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hal-01578431 , version 1 (28-06-2018)

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Davood Zare, Benjamin Doistau, Homayoun Nozary, Céline Besnard, Laure Guénée, et al.. CrIII as an alternative to RuII in metallo-supramolecular chemistry. Dalton Transactions, 2017, 46 (28), pp.8992 - 9009. ⟨10.1039/c7dt01747b⟩. ⟨hal-01578431⟩
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