Erica Farnetti

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Iron complexes with nitrogen bidentate ligands as green catalysts for alcohol oxidation

Jennifer E. Chàvez, Corrado Crotti, Ennio Zangrando, Erica Farnetti

Journal of Molecular Catalysis A: Chemical > 2016 > 421 > C > 189-195

The iron(II) complexes [Fe(N-N)₃](OTf)₂ (N-N=2,2′- bipyridine, 1,10-phenanthroline and substituted derivatives) were employed as catalyst precursors for the oxidation of primary and secondary alcohols, including glycerol. The single-crystal structure of [Fe(bipy)₃](OTf)₂ was determined by X-ray crystallography.The catalytic reactions were performed using either H₂O₂ or tert-butilhydroperoxide (TBHP)...

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3D supramolecular networks of Mn(II)-5-sulfosalicylate assembled with 4,4′-dipyridyl N,N′-dioxide and 4,4′-dipyridyl: Structure, photoluminescence and DFT calculations

Soumen Mistri, Ennio Zangrando, Erica Farnetti, Subal Chandra Manna

Polyhedron > 2015 > 89 > Complete > 250-259

The supramolecular complexes {[Mn ₂ (HSsal) ₂ (dpyo) ₃ (H ₂ O) ₆ ]·2(H ₂ O)} (1) and {[Mn(4,4′-bipy)(H ₂ O) ₄ ]·(HSsal)·(H ₂ O)} _n (2) [dpyo=4,4′-dipyridyl N,N′-dioxide; 4,4′-bipy=4,4′-bipyridine and HSsal=5-sulfosalicylate dianion] have been synthesized and structurally characterized. Complex 1 is a rare Mn dinuclear...

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Selective oxidation of glycerol catalyzed by iron complexes

Corrado Crotti, Erica Farnetti

Journal of Molecular Catalysis A: Chemical > 2015 > 396 > C > 353-359

Iron complexes with the polydentate ligand bis(2-pyridinylmethyl)amine (BPA) were employed as catalysts for the oxidation of glycerol using hydrogen peroxide as oxidant. The only observed reaction products were dihydroxyacetone (DHA) and formic acid. Although the overall conversion was in all cases lower than 50%, by accurate choice of the experimental conditions selectivities in DHA up to 100% were...

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Iridium-catalyzed N-alkylation of diamines with glycerol

Corrado Crotti, Erica Farnetti, Sabina Licen, Pierluigi Barbieri, more

Journal of Molecular Catalysis. A, Chemical > 2014 > 382 > Complete > 64-70

•We report a novel glycerol valorization route which proceeds via iridium-catalyzed dehydrogenation.•Reaction of glycerol with 1,2-diaminocyclohexanes gives N-heterocyclic products.•The process is catalyzed by [Cp*IrCl ₂ ] ₂ and K ₂ CO ₃ in water at 100°C.•Evidence for hydrogen-borrowing mechanism is obtained by reaction of the diamine with a glycerol acetal.

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Directing iridium-catalyzed C–C bond formation by selection of the ancillary ligands: Polymerization and cyclotrimerization of alkynes

Erica Farnetti, Serena Filipuzzi

Inorganica Chimica Acta > 2010 > 363 > 3 > 467-473

The ability of organoiridium derivatives of catalyzing oligomerization and polymerization of terminal alkynes is markedly influenced by the nature of non-participative ligands coordinated to the metal. The dimeric species [Ir(cod)Cl] ₂ and [Ir(cod)(OMe)] ₂ (cod=1,5-cyclooctadiene) as well as the phosphine complexes HIr(cod)(PR ₃ ) ₂ (PR ₃ =PPh ₃ , P(p-MeOC...

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Organoiridium compounds with substituted phenantrolines as alkynes polymerization catalysts

Serena Filipuzzi, Erica Farnetti

Journal of Molecular Catalysis. A, Chemical > 2005 > 238 > 1-2 > 111-118

The iridium derivatives [Ir(diene)(N-N)X] (diene=1,5-cyclooctadiene, 1,5-hexadiene; N-N=1,10-phenantroline, 4,7-dimethyl-1,10-phenantroline, 3,4,7,8-tetramethyl-1,10-phenantroline, 4,7-diphenyl-1,10-phenantroline; X=Cl, Br, I) catalyze the polymerization of phenylacetylene. The reaction is highly stereoselective with formation of 100% trans-polyphenylacetylene. The catalytic activity has a pronounced...

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Donor Properties of Diphosphine Ligands in Tungsten Carbonyl Complexes: Synchrotron Radiation XPS Measurements and DFT Calculations

Corrado Crotti, Erica Farnetti, Teresa Celestino, Mauro Stener, more

Organometallics > 2004 > 23 > 22 > 5219 - 5225

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Organoiridium compounds with bidentate phosphines as highly regioselective catalysts for alkynes cyclotrimerization

Matteo Fabbian, Nazario Marsich, Erica Farnetti

Inorganica Chimica Acta > 2004 > 357 > 10 > 2881-2888

The iridium derivatives HIr(cod)(L-L) (cod=1,5-cyclooctadiene; L-L=Ph ₂ PCH ₂ PPh ₂ (dppm); Ph ₂ P(CH ₂ ) ₂ PPh ₂ (dppe); Ph ₂ P(CH ₂ ) ₃ PPh ₂ (dppp); Ph ₂ P(CH ₂ ) ₄ PPh ₂ (dppb); o-C ₆ H ₄ (PPh ₂ ) ₂ ; Cy ₂ P(CH ₂ ) ₂ PCy...

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Regioselective cyclotrimerization of phenylacetylenes to 1,2,4-triarylbenzenes catalyzed by iridium-diphosphine complexes

Erica Farnetti, Nazario Marsich

Journal of Organometallic Chemistry > 2004 > 689 > 1 > 14-17

The organoiridium derivatives HIr(cod)(P-P) (cod=1,5-cyclooctadiene; P-P=dppm (bis(diphenylphosphino)methane), dppe (1,2-bis(diphenylphosphino)ethane), dppp (1,3-bis(diphenylphosphino)propane), dppb (1,4-bis(diphenylphosphino)butane)) catalyze the regioselective cyclotrimerization of phenylacetylene as well as of its derivatives p-CH ₃ OC ₆ H ₄ C CH and p-CF ₃ C ...

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Iridium-catalyzed formation of trans-polyphenylacetylene by alkyne polymerization

Mauro Marigo, Dunja Millos, Nazario Marsich, Erica Farnetti

Journal of Molecular Catalysis. A, Chemical > 2003 > 206 > 1-2 > 319-329

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Preparation of solid-state samples of a transition metal coordination compound for synchrotron radiation photoemission studies

Corrado Crotti, Erica Farnetti, Teresa Celestino, Stefano Fontana

Journal of Electron Spectroscopy and Related Phenomena > 2003 > 128 > 2-3 > 141-157

The aim of this research was to identify a sample preparation method suitable for the study of transition metal complexes by photoemission spectroscopy with synchrotron radiation as the X-ray source, even in the case where the compound is not evaporable. Solid-phase samples of W(CO) ₄ (dppe) [dppe=1,2-bis(diphenylphosphino)ethane] were prepared according to different methods and their synchrotron...

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Polymerization of phenylacetylene catalyzed by organoiridium compounds

Mauro Marigo, Nazario Marsich, Erica Farnetti

Journal of Molecular Catalysis. A, Chemical > 2002 > 187 > 2 > 169-177

The compounds [Ir(cod)X] ₂ (cod=1,5-cyclooctadiene; X=Cl, OMe) catalyze the polymerization of phenylacetylene, with negligible formation of oligomeric products. At variance, the monoolefin analogue [Ir(cot) ₂ Cl] ₂ (cot=cyclooctene) only promotes alkyne cyclotrimerization. The polymerization reaction proceeds in various solvents such as tetrahydrofuran (THF), chloroform and...

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Stereoselective living polymerization of phenylacetylene promoted by rhodium catalysts with bidentate phosphines

Michele Falcon, Erica Farnetti, Nazario Marsich

Journal of Organometallic Chemistry > 2001 > 629 > 1-2 > 187 - 193

Polymerization of phenylacetylene to give highly stereoregular cis-transoid polyphenylacetylene is accomplished by use of [Rh(nbd)(OMe)] ₂ (nbd=norbornadiene) and Ph ₂ P(CH ₂ ) _x PPh ₂ (x=2, dppe; x=3, dppp; x=4, dppb). The catalytic system employing the ligand dppb promotes formation of polymer products with low polydispersities. The polymerization is of living...

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Asymmetric hydrogen-transfer reduction of prochiral and α,β-unsaturated ketones by iridium complexes containing optically pure aminodiphosphine ligands

Claudio Bianchini, Lionel Glendenning, Fabrizio Zanobini, Erica Farnetti, more

Journal of Molecular Catalysis. A, Chemical > 1998 > 132 > 1 > 13-19

This work reports the catalytic reduction, via hydrogen-transfer from propan-2-ol, of various α,β-unsaturated ketones or unsymmetrical ketones in the presence of [Ir(COD)(OMe)] ₂ and the chiral aminodiphosphine ligands (R)-PhC ^* H(Me)N(CH ₂ CH ₂ PR ₂ ) ₂ (R=Ph, Cy) and (R)-(Et)C ^* H(Me)N(CH ₂ CH ₂ PPh ₂ ) ₂ . In...

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Search results for: Erica Farnetti

Iron complexes with nitrogen bidentate ligands as green catalysts for alcohol oxidation

3D supramolecular networks of Mn(II)-5-sulfosalicylate assembled with 4,4′-dipyridyl N,N′-dioxide and 4,4′-dipyridyl: Structure, photoluminescence and DFT calculations

Selective oxidation of glycerol catalyzed by iron complexes

Iridium-catalyzed N-alkylation of diamines with glycerol

Directing iridium-catalyzed C–C bond formation by selection of the ancillary ligands: Polymerization and cyclotrimerization of alkynes

Organoiridium compounds with substituted phenantrolines as alkynes polymerization catalysts

Donor Properties of Diphosphine Ligands in Tungsten Carbonyl Complexes: Synchrotron Radiation XPS Measurements and DFT Calculations

Organoiridium compounds with bidentate phosphines as highly regioselective catalysts for alkynes cyclotrimerization

Regioselective cyclotrimerization of phenylacetylenes to 1,2,4-triarylbenzenes catalyzed by iridium-diphosphine complexes

Iridium-catalyzed formation of trans-polyphenylacetylene by alkyne polymerization

Preparation of solid-state samples of a transition metal coordination compound for synchrotron radiation photoemission studies

Polymerization of phenylacetylene catalyzed by organoiridium compounds

Stereoselective living polymerization of phenylacetylene promoted by rhodium catalysts with bidentate phosphines

Asymmetric hydrogen-transfer reduction of prochiral and α,β-unsaturated ketones by iridium complexes containing optically pure aminodiphosphine ligands

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