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<dc:title xml:lang="en">Synthesis and reactivity of metal complexes containing functionalized N-heterocyclic carbene ligands for catalytic applications</dc:title>
<dcterms:alternative xml:lang="fr">Synthèse et réactivité de complexes métalliques contenant des ligands carbéniques N-hétérocycliques et des ligands fonctionnels pour des applications catalytiques</dcterms:alternative>
<dc:subject xml:lang="fr">Carbènes N-hétérocycliques</dc:subject>
<dc:subject xml:lang="fr">Fonctions phosphanyles</dc:subject>
<dc:subject xml:lang="fr">Complexes polynucléaires</dc:subject>
<dc:subject xml:lang="fr">Liaisons métal-métal</dc:subject>
<dc:subject xml:lang="fr">Interactions d10-d10</dc:subject>
<dc:subject xml:lang="fr">Interaction aurophiles</dc:subject>
<dc:subject xml:lang="fr">Luminescence</dc:subject>
<dc:subject xml:lang="fr">Oligomérisation catalytique de l'éthylène</dc:subject>
<dc:subject xml:lang="en">N-heterocyclic carbenes</dc:subject>
<dc:subject xml:lang="en">Phophanyl-functionalization</dc:subject>
<dc:subject xml:lang="en">Polynuclear complexes</dc:subject>
<dc:subject xml:lang="en">Metal-metal bonds</dc:subject>
<dc:subject xml:lang="en">D10-d10 interactions</dc:subject>
<dc:subject xml:lang="en">Aurophilic interactions</dc:subject>
<dc:subject xml:lang="en">Luminescence</dc:subject>
<dc:subject xml:lang="en">Catalyc ethylene oligomerization</dc:subject>
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<tef:elementdEntree autoriteExterne="167466356" autoriteSource="Sudoc">Carbènes N-hétérocycliques</tef:elementdEntree>
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<dcterms:abstract xml:lang="fr">L’objectif de ce travail fut la synthèse de ligands fonctionnels de type N,N'-diphosphanyl-NHC (NHC = carbènes N-hétérocycliques) et l’étude de leur chimie de coordination. La synthèse du nouveau ligand tridentate, stable et rigide, N,N'-diphosphanyl-imidazol-2-ylidene a permis des études expérimentales et théoriques et l’accès à des complexes mono-, di-, tri-, penta-, et hexanucléaires des métaux du groupe 11 (Cu, Ag et Au) originaux et aux propriétés structurales uniques. Les complexes mono- et dinucléaires avec un ou deux atomes de phosphore libres ont permis d’accéder à des complexes hétérotrinucléaires à interactions d10-d10 qui sont luminescents. La transmétallation partielle ou totale des complexes homotrinucléaires de Cu ou d’Ag avec des réactifs contenant du Pd(0) ont conduit à des complexes hétérotrinucléaires à interactions d10-d10. En plus de son comportement pontant, ce ligand peut se agir en chélate dans des complexes du palladium et du chrome. Dans le cas du Cr(III), ils montrent une activité catalytique en oligomérisation de l’éthylène supérieure à celle des complexes du Cr(II) et conduisent principalement à des oligomères.</dcterms:abstract>
<dcterms:abstract xml:lang="en">The purpose of this work was the synthesis of N,N'-diphosphanyl-functionalized NHC ligands andtheir coordination chemistry. The novel stable and rigid tridentate N,N'-diphosphanyl-imidazol-2-ylidene was synthesized and experimental and computational information on its stability weregained. It served as a unique platform for the synthesis of novel mono-, di-, tri-, penta-, hexanuclear complexes with the coinage metals (Cu, Ag and Au), exhibiting rare structural features. The mono- and dinuclear complexes with one or two dangling P-donors provided rational access to heterotrinuclear complexes. All these coinage metal complexes have short metal-metalseparations, indicating the presence of d10-d10 interactions, and display excellent luminescentproperties. Partial or complete transmetallation of the homotrinuclear Cu or Ag complexes withPd(0) precursors led to hetero-trinuclear complexes with d10-d10 interactions. In addition to itsbridging behavior, this ligand also showed its chelating behavior in Pd or Cr(III) complexes. Thelatter displayed superior performance in ethylene oligomerization than the Cr(II) complexes andgave mostly oligomers.</dcterms:abstract>
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