@prefix prodottidellaricerca: . @prefix istituto: . @prefix prodotto: . istituto:CDS063 prodottidellaricerca:prodotto prodotto:ID39495 . @prefix pubblicazioni: . @prefix unitaDiPersonaleInterno: . unitaDiPersonaleInterno:MATRICOLA16931 pubblicazioni:autoreCNRDi prodotto:ID39495 . @prefix modulo: . modulo:ID2684 prodottidellaricerca:prodotto prodotto:ID39495 . unitaDiPersonaleInterno:MATRICOLA14788 pubblicazioni:autoreCNRDi prodotto:ID39495 . @prefix rdf: . prodotto:ID39495 rdf:type prodotto:TIPO1101 . @prefix retescientifica: . prodotto:ID39495 rdf:type retescientifica:ProdottoDellaRicerca . @prefix rdfs: . prodotto:ID39495 rdfs:label "Homobimetallic anthracene-bridged h5-cyclopentadienyl derivatives of rhodium(I) and iridium(I): large molecules or supramolecular species? (Articolo in rivista)"@en . @prefix xsd: . prodotto:ID39495 pubblicazioni:anno "2004-01-01T00:00:00+01:00"^^xsd:gYear . @prefix skos: . prodotto:ID39495 skos:altLabel "
Francesca Cicogna a, Benedetta Gaddi a, Giovanni Ingrosso a,*, Massimo Marcaccio b,\nFabio Marchetti a, Demis Paolucci b, Francesco Paolucci b, Calogero Pinzino c,\nRiccardo Viglione a (2004)
Homobimetallic anthracene-bridged h5-cyclopentadienyl derivatives of rhodium(I) and iridium(I): large molecules or supramolecular species?
in Inorganica Chimica Acta (Testo stamp.)
"^^rdf:HTML ; pubblicazioni:autori "Francesca Cicogna a, Benedetta Gaddi a, Giovanni Ingrosso a,*, Massimo Marcaccio b,\nFabio Marchetti a, Demis Paolucci b, Francesco Paolucci b, Calogero Pinzino c,\nRiccardo Viglione a"^^xsd:string ; pubblicazioni:paginaInizio "2915"^^xsd:string ; pubblicazioni:paginaFine "2932"^^xsd:string ; pubblicazioni:numeroVolume "357"^^xsd:string . @prefix ns11: . prodotto:ID39495 pubblicazioni:rivista ns11:ID394634 ; skos:note "ISI Web of Science (WOS)"^^xsd:string ; pubblicazioni:affiliazioni "a Dipartimento di Chimica e Chimica Industriale, Universit\u00E0 di Pisa, Via Risorgimento 35, 56126 Pisa, Italy\nb Dipartimento di Chimica 'G. Ciamician', Universit\u00E0 di Bologna, Via Selmi 2, 40126 Bologna, Italy\nc Istituto per i Processi Chimico-Fisici del C.N.R., Area della Ricerca di Pisa, Via G. Moruzzi 1, 56124 Pisa, Italy"^^xsd:string ; pubblicazioni:titolo "Homobimetallic anthracene-bridged h5-cyclopentadienyl derivatives of rhodium(I) and iridium(I): large molecules or supramolecular species?"^^xsd:string ; prodottidellaricerca:abstract "The reaction of 9,10-bis[(cyclopentadienylmethyl)thallium(I)]anthracene (2), obtained from 9,10-bis(cyclopentadienylmethyl)\nanthracene (1), with the chloro derivatives of rhodium(I) of formula [RhClL2]2 (L=g2-C8H14 or L2 =g4-C8H12) leads to the\ncorresponding bimetallic complexes [L2Rh{C5H4CH2(9,10-anthrylene)CH2C5H4}RhL2] 3 (L=g2-C8H14) and 4 (L2 =g4-C8H12),\nin 22.8% and 15.0% yields, respectively. Analogously, by reacting 2 with [IrClL2]2 (L=g2-C8H14 or L2 =g4-C8H12), the corresponding\nbimetallic iridium(I) complexes [L2Ir{C5H4CH2(9,10-anthrylene)CH2C5H4}IrL2] 5 (L=g2-C8H14) and 6 (L2 =g4-C8H12)\nwere obtained, in 24.5% and 43.0% yields, respectively. All complexes have been characterised by elemental analysis, mass spectrometry,\nand 1H NMR. The structure of 4 was elucidated also by single crystal X-ray diffraction: it crystallises in the P21=c space\ngroup with a = 19:932(11), b = 6:4417(4), c = 12:377(2) A; a = 90\u00B0, b = 100.90(4)\u00B0, c = 90\u00B0. V = 1560.5(9) A3. Z = 2,\nDcalc = 1.606 g cm-1, R1 = 0.0449 [I > r(I)], wR2 = 0.1121. The UV\u0096Vis spectra (280\u0096530 nm) of 3\u00966 are indicative of the existence\nof strong electronic interactions among the 9,10-anthrylene chromophore and the two cyclopentadienylML2 moieties. When excited\nat ca. 370 nm, 1 results to be an efficient light-emitting molecule, while the fluorescence emission of the 9,10-anthrylene chromophore\nis almost completely quenched in complexes 3\u00966. The study of the electrochemical behaviour of 3\u00966 in strictly aprotic conditions\nallows a satisfactory interpretation of the observed electrode processes and gives information about the location of the redox sites\nalong with the thermodynamic characterisation of the corresponding redox processes. These data show that the occurrence of an\nintramolecular charge-transfer process between the photo-excited 9,10-anthrylene group and the cyclopentadienylML2 moiety is a\npossible route for the observed quenching of emission in the compounds 3\u00966. The one-electron oxidation of compounds 3\u00966 by\nthallium(III) trifluoroacetate leads to the formation of the corresponding cation radicals. Three of them, i.e., 3+, 5+ and 6+, give rise\nto good X-band EPR spectra that were fully interpreted by computer simulation as well as by semi-empirical calculations (PM3\nlevel) of the spin density distribution."@en ; prodottidellaricerca:prodottoDi istituto:CDS063 , modulo:ID2684 ; pubblicazioni:autoreCNR unitaDiPersonaleInterno:MATRICOLA16931 , unitaDiPersonaleInterno:MATRICOLA14788 . @prefix parolechiave: . prodotto:ID39495 parolechiave:insiemeDiParoleChiave . ns11:ID394634 pubblicazioni:rivistaDi prodotto:ID39495 . parolechiave:insiemeDiParoleChiaveDi prodotto:ID39495 .