Nitrile ligands for controlled synthesis of alkynyl-ruthenium based homo and hetero bimetallic systems |
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Authors: | Jean-Luc Fillaut,Neerja Nagpal Dua,Loï c Toupet |
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Affiliation: | a UMR 6226 CNRS - Université Rennes 1, “Sciences chimiques de Rennes”, Avenue du general Leclerc, Campus de Beaulieu Case postale 1014, 35042 Rennes cedex, France b UMR 6626 CNRS - Université Rennes 1, Laboratoire de Physique de la Matière Condensée, Université de Rennes 1, 35042 Rennes cedex, France c Centre Régional de Mesures Physiques de l’Ouest, Université de Rennes 1, 35042 Rennes cedex, France |
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Abstract: | Wire like mono- and poly-nuclear molecules based on alkynyl ruthenium complexes whose core unit is trans-[Ru(C C-R)(R′C N)(dppe)2][PF6] are readily formed in soft conditions. The electronic dual character of the metallic unit, donor through the acetylide moiety, acceptor versus the nitrile ligand is exemplified through electrochemical studies of a series of ethynylferrocene and cyanoferrocene derivatives. A single crystal X-ray diffraction analysis of the [(dppe)2(PhC C)Ru(N C-C6H4-C N)Ru(C CPh)(dppe)2][2PF6] bimetallic complex 5 shows that the global structure of such complexes consists of wire type dimetallic units. With the availability of this versatile, direct, and simple route, a new class of extended rigid rod systems of nanometric size with multilevel electron transfers is readily accessed. |
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Keywords: | Ruthenium Electron transfer Alkynyl complexes N ligands Donor-acceptor systems |
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