A5005905852- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Metal complexes synthesis and properties
- Metal-Catalyzed Oxygenation Mechanisms
- Crystallography and molecular interactions
- Polyoxometalates: Synthesis and Applications
- Magnetism in coordination complexes
- Organometallic Complex Synthesis and Catalysis
- Asymmetric Hydrogenation and Catalysis
- Electrocatalysts for Energy Conversion
- Metal-Organic Frameworks: Synthesis and Applications
- Synthetic Organic Chemistry Methods
- Lanthanide and Transition Metal Complexes
- Oxidative Organic Chemistry Reactions
- Porphyrin and Phthalocyanine Chemistry
- Boron Compounds in Chemistry
- N-Heterocyclic Carbenes in Organic and Inorganic Chemistry
- Conducting polymers and applications
- Electrochemical Analysis and Applications
- Polymer Nanocomposites and Properties
- Axial and Atropisomeric Chirality Synthesis
- Catalytic Cross-Coupling Reactions
- Nanomaterials for catalytic reactions
- Photodynamic Therapy Research Studies
- Advanced Photocatalysis Techniques
University of Girona
2013-2024
Centre National de la Recherche Scientifique
2002-2014
Université Joseph Fourier
2014
Institut de Chimie Moléculaire de Grenoble
2014
Laboratoire de Chimie
2014
Université Grenoble Alpes
2014
Département de Chimie Moléculaire
2014
Institut Català d'Investigació Química
2004-2009
University of Geneva
2009
Universitat Autònoma de Barcelona
2004-2008
Abstract Water into oxygen : A good catalyst for converting water is seen as an essential part of any sustainable solar‐energy conversion scheme. Some success has been achieved using molecular complexes catalysts and the key factors influencing their performance are discussed. The necessity generating a solid‐state catalytic system presented first attempts to generate supported water‐oxidation analyzed. magnified image During past four years we have witnessed revolution in field catalysis,...
We have prepared three new dinuclear ruthenium complexes having the formulas [Ru2II(bpp)(trpy)2(μ-L)]2+ (L = Cl, 1; L AcO, 2) and [Ru2II(bpp)(trpy)2(H2O)2]3+ (3). The been characterized through usual spectroscopic electrochemical techniques and, in cases of 1 2, X-ray crystal structures solved. In aqueous acidic solution, acetato bridge 2 is replaced by aqua ligands, generating bis(aqua) complex 3 which, upon oxidation to its RuIVRuIV state, has shown catalytically oxidize water molecular...
A thorough characterization of the Ru-Hbpp (in,in-{[Ru(II)(trpy)(H(2)O)](2)(mu-bpp)}(3+) (trpy is 2,2':6',2''-terpyridine, bpp bis(2-pyridyl)-3,5-pyrazolate)) water oxidation catalyst has been carried out employing structural (single crystal X-ray), spectroscopic (UV-vis and NMR), kinetic, electrochemical (cyclic voltammetry) analyses. The latter reveals existence five different states generated by sequential an initial II,II state to ultimate, formal IV,IV state. Each these characterized...
The main objective of this review is to give a general overview the structure, electrochemistry (when available), and catalytic performance Ru complexes, which are capable oxidizing water molecular dioxygen, highlight their more relevant features. description catalysts mainly divided into complexes that contain Ru−O−Ru bridging group those do not. Finally few conclusions drawn from global all presented here, some guidelines for future catalyst design given.
Abstract Wasseroxidation : Ein guter Katalysator für die Umsetzung von Wasser zu Sauerstoff ist nachhaltige Umwandlung Sonnenenergie essenziell. Die Schlüsselfaktoren Leistungsfähigkeit erfolgreicher molekularer Katalysatoren und Notwendigkeit ein katalytisches System auf Festkörperbasis werden erläutert, ersten Versuche, molekulare Trägermaterial herzustellen, analysiert. magnified image In den letzten vier Jahren wurden wir Zeugen einer Revolution dem Gebiet der katalytischen...
The complexes [Cu2(dpt)2Cl2]X2 (dpt = dipropylenetriamine; X Cl, 1; X2 (Cl)(BPh4), 2) have been prepared and their magnetic properties studied. crystal structure of complex 1 has solved. compound belongs to the C2/c space group with Z 4, a 17.201(2) Å, b 10.873(2) c 11.835(2) β 99.720(10)°. geometry about each copper approximates that distorted square pyramid. three N-atoms dpt ligand one Cl bridging ligands form base pyramid while other chloro occupies axial site. two pyramids share...
We have prepared a new family of ruthenium complexes containing the bpea ligand (where stands for N,N-bis(2-pyridyl)ethylamine), with general formula [Ru(bpea)(bpy)(X)](n+) (2, X = Cl(-); 3, H(2)O; 4, OH(-)), and trisaqua complex [Ru(bpea)(H2O)(3)](2+), 6. The been characterized through elemental analyses, UV-vis (1)H NMR spectroscopy, electrochemical studies. For X-ray diffraction structure has also solved. compound belongs to monoclinic P2(1)/m space group, Z 2, 7.9298(6) A, b 18.0226(19)...
Three new Ru-aqua complexes containing a mixed carbene and pyridylic ligands with general formulas [Ru(CNC)(bpy)(H2O)](PF6)2 (1) (CNC is 2,6-bis(butylimidazol-2-ylidene)pyridine; bpy 2,2'-bipyridine) cis-/trans-[Ru(CNC)(nBu-CN)(H2O)](PF6)2 (cis-2 trans-2) (nBu-CN 2-(butylimidazol-2-ylidene)pyridine) have been prepared structurally characterized both in the solid state (monocrystal X-ray diffraction analysis for 1 related complex trans-[Ru(Br)(CNC)(nBu-CN)](PF6)) solution (for all of them)...
The synthesis of two Ru-dmso complexes containing the ligands 2-(3-pyrazolyl)pyridine (pypz-H), and pyrazole (pz-H), [Ru(II)Cl2(pypz-H)(dmso)2], (2) [Ru(II)Cl2(pz-H)(dmso)3], (3), has been described. Both have fully characterized in solution through (1)H-NMR UV-Vis techniques also solid state monocrystal X-ray diffraction analysis. redox properties both studied by means cyclic voltammetry. Exposure 2 to visible light acetonitrile produces a substitution one dmso ligand solvent molecule...
Three pairs of mononuclear geometrical isomers containing the ligand 3,5-bis(2-pyridyl)pyrazole (Hbpp) general formula in- and out-[RuII(Hbpp)(trpy)X](n+) (trpy=2,2':6',2' '-terpyridine; X=Cl, n=1, 2a,b; X=H2O, n=2, 3a,b; X=py (pyridine), 4a,b) have been prepared through two different synthetic routes, isolated, structurally characterized. The solid state structural characterization was performed by X-ray diffraction analysis four complexes: 2a-4a 4b. in solution means 1D 2D NMR spectroscopy...
Two isomeric Ru(II) complexes containing the dinucleating Hbpp (3,5-bis(2-pyridyl)pyrazole) ligand together with Cl and dmso ligands have been prepared their structural, spectroscopic, electrochemical, photochemical, catalytic properties studied. The crystal structures of trans,cis-[Ru(II)Cl(2)(Hbpp)(dmso)(2)], 2a, cis(out),cis-[Ru(II)Cl(2)(Hbpp)(dmso)(2)], 2b, solved by means single-crystal X-ray diffraction analysis showing a distorted octahedral geometry for metal center where coordinate...
Two new isomers trans,mer-[RuIICl2(bpea)(DMSO)], 2a, and cis,fac-[RuIICl2(bpea)(DMSO)], 2b, (bpea = N,N-bis(2-pyridylmethyl)ethylamine), as well the bis-DMSO complex trans,fac-[RuIICl(bpea)(DMSO)2]Cl, 3, have been synthesized characterized by cyclic voltammetry UV-vis 1D 2D NMR spectroscopy in solution. Their solid-state structure has also solved means of single-crystal X-ray diffraction analysis. All three complexes display a ruthenium metal center possessing distorted-octahedral type...
A new pentanuclear bis(triple-helical) manganese complex has been isolated and characterized by X-ray diffraction in two oxidation states: [{Mn(II)(μ-bpp)(3)}(2)Mn(II)(2)Mn(III)(μ-O)](3+) (1(3+)) [{Mn(II)(μ-bpp)(3)}(2)Mn(II)Mn(III)(2)(μ-O)](4+) (1(4+)). The structure consists of a central {Mn(3)(μ(3)-O)} core Mn(II)(2)Mn(III) or Mn(II)Mn(III)(2) ions (1(4+)) which is connected to apical Mn(II) through six bpp(-) ligands. Both cations have triple-stranded helicate configuration, pair...
The bis(2-pyridyl)ethylamine (bpea) ligand has been used as a starting material for the synthesis of dinuclear Ru complexes general formula trans,fac-{[RunX(bpea)]2(μ-bpp)}m+ (for X = Cl, n II, m 1, trans-RuII-Cl, 1+; OH, III, 3, trans-RuIII-OH, 23+) where 3,5-bis(2-pyridyl)pyrazolate anionic (bpp) acts bridging dinucleating ligand, bpea coordinates in facial manner and monodentate ligands are situated trans fashion with regard to one another. These have characterized solution by 1D 2D NMR...
The complexes [Cu2(mu-Cl)2(Cl)2(L)2] (L = dialkylpyridine-2,6-dicarboxylate; R Et, L depc, 1; i-Pr, dppc, 2) have been prepared and their magnetic properties studied. crystal structures of 1 2 solved. Compound belongs to the P space group with Z 2, a 8.3020(10) A, b 9.2050(10) c 10.065(2) alpha 99.040(10), beta 100.810(10), gamma 106.502(10) whereas C2/c 8, 11.6360(10) 25.906(3) 11.76579(10) 107.900(10). different alkyl ester substitutes produce substantial structural electronic differences....
The synthesis of a family new Ru complexes containing the meridional trpy ligand with general formula [RuII(T)(D)(X)]n+ (T = 2,2′:6′,2′′-terpyridine (trpy); D 3,5-dimethyl-2-(2-pyridyl)pyrrolate (pyrpy), and 2-(1-Methyl-3-pyrazolyl)pyridine (pypz-Me); X Cl, H2O) have been described. All spectroscopically characterized in solution through 1H NMR UV−vis techniques, chloro also solid state monocrystal X-ray diffraction analysis. pyrpy undergoes an oxidation at 3-position pyrrolate ring during...
The synthesis, structure, and magnetic properties of two new tetranuclear Cu(II) complexes containing N,N,N',N'-tetraethylpyridine-2,6-dithiocarboxamide (S-dept) formula [Cu(2)Cl(2)(mu-S-dept)(2)][Cu(2)Cl(4)(mu-Cl)(2)] (1) [Cu(2)(mu-Cl)(2)(S-dept)(2)][CuCl(3)(EtOH)](2) (2) are reported. Their X-ray crystal structures reveal that the composed anionic cationic dimers, in both cases contain metal centers which interact via Coulombic and/or hydrogen bonding interactions. In cases, Cu moieties...
The synthesis and isolation of the complex cis,fac-[RuIICl2(bpea)(PPh3)][3; bpea = N,N-bis(2-pyridylmethyl)ethylamine] three geometrical isomers [RuIICl(bpea)(dppe)](BF4) [4; dppe (1,2-diphenylphosphino)ethane], trans,fac (4a), cis,fac (4b), mer(down) (4c), have been described (see Chart 1 for a drawing their structures). These complexes characterized through analytical, spectroscopic (IR, UV/vis, 1D 2D NMR), electrochemical (cyclic voltammetry) techniques. In addition, 3, 4a, 4b further in...
Starke Leistung: Durch Copolymerisation des kationischen Ru-Katalysators [Ru2II(μ-bpp)(t-trpy)2(H2O)2]3+ (1) für die Wasseroxidation mit einem Cobaltabisdicarbollid-Monomer (2) erhält man ein neues Material, „FTO/Poly-(1-co-2)“, das H2O einer Wechselzahl (TN) von 250 zu O2 oxidiert (siehe Bild). Dies ist bisher beste Leistung, in heterogener Phase chemischen Oxidationsmittel erzielt wurde. Supporting information for this article is available on the WWW under...
The synthesis of a family new Ru complexes containing the facial tridentate ligand with general formula [RuII(T)(D)(X)]n+ (T = trispyrazolylmethane (tpm); D ((4S,4′S)-(-)-4,4′,5,5′-tetrahydro-4,4′-bis(1-methylethyl)-2,2′-bioxazole) (iPr-box-C) or N-(1-hydroxy-3-methylbutan-(2S)-(-)-2-yl)-(4S)-(-)-4-isopropyl-4,5-dihydrooxazole-2-carbimidate (iPr-box-O); X Cl, H2O) has been described. All have spectroscopically characterized in solution through 1H NMR and UV–vis techniques, redox properties...
Photochemical ligand substitution in acetonitrile and chloroform, together with the kinetics of dmso linkage isomerization, are investigated new Ru(<sc>ii</sc>)-dmso complexes that also active as nitrile hydration catalysts.
New ruthenium complexes bearing tridentate ligands of general formula cis-fac-[RuIIL2][PF6]2 (L = N,N-bis(2-pyridylmethyl)ethylamine (bpea) 1 or N-[3-bis(2-pyridylmethyl)aminopropyl]pyrrole (bpea-pyr) 2) have been prepared following two different synthetic routes. They characterised by elemental analyses, UV-Vis and 1H NMR spectroscopy. Furthermore, the crystal structure complex has solved. The Ru is co-ordinated in a distorted octahedral fashion six N atoms bpea which occupy opposite faces...