Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.21/2235
Título: Ruthenium(II) Arene Complexes Bearing Tris(pyrazolyl)methanesulfonate Capping Ligands.Electrochemistry, Spectroscopic, and X-ray Structural Characterization
Autor: Marchetti, Fabio
Pettinari, Claudio
Pettinari, Riccardo
Cerquetella, Adele
Martins, Luísa Margarida D. R. S.
Guedes da Silva, M. Fátima C.
Silva, Telma F. S.
Pombeiro, Armando J. L.
Palavras-chave: Coordination Chemistry
1,3,5-Triaza-7-Phosphaadamantane PTA
Peroxidative Oxidation
Ferrocene Derivatives
Catalyst Precursors
Crystal-Structures
Rhenium Complexes
Electron-Transfer
Anticancer Drugs
Redox Potentials
Data: 28-Nov-2011
Editora: Amer Chemical SOC
Citação: MARCHETTI, Fabio; PETTINARI, Claudio; PETTINARI, Riccardo; CERQUETELLA, Adele; MARTINS, Luísa M. D. R. S.; SILVA, M. Fátima C. Guedes da; SILVA, Telma F. S.; POMBEIRO, Armando J. L. - Ruthenium(II) Arene Complexes Bearing Tris(pyrazolyl)methanesulfonate Capping Ligands.Electrochemistry, Spectroscopic, and X-ray Structural Characterization. Organometallics. ISSN 0276-7333. Vol. 30, n.º 22 (2011) p. 6180-6188.
Resumo: Novel [Ru(L)(Tpms)]Cl and [Ru(L)(Tpms(Ph))]Cl complexes (L = p-cymene, benzene, or hexamethylbenzene, Tpms = tris(pyrazolyl)-methanesulfonate, Tpms(Ph) = tris(3-phenylpyrazoly)methanesulfonate) have been prepared by reaction of [Ru(L)(mu-Cl)(2)](2) with Li[Tpms] and Li[Tpms(Ph)], respectively. [Ru(p-cymene)(Tpms)]BF4 has been synthesized through a metathetic reaction of [Ru(p-cymene)(Tpms)]Cl with AgBF4. [RuCl(cod)(Tpms)] (cod = 1,5-cyclooctadiene) and [RuCl(cod)(Tpms(Ph))] are also reported, being obtained by reaction of [RuCl2(cod)(MeCN)(2)] with Li[Tpms] and Li[Tpms(Ph)], respectively. The structures of the complexes and the coordination modes of the ligands have been established by IR, NMR, and single-crystal X-ray diffraction (for [RuL(Tpms)]X (L = p-cymene or HMB, X = Cl; L = p-cymene, X = BF4)) studies. Electrochemical studies showed that each complex undergoes a single-electron R-II -> R-III oxidation at a potential measured by cyclic voltammetry, allowing to compare the electron-donor characters of the tris(pyrazolyl)methanesulfonate and arene ligands, and to estimate, for the first time, the values of the Lever E-L ligand parameter for Tmps(Ph), HMB, and cod.
Peer review: yes
URI: http://hdl.handle.net/10400.21/2235
ISSN: 0276-7333
Aparece nas colecções:ISEL - Eng. Quim. Biol. - Artigos



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