Substitution of methanol-d4 for the coordinated water in the trinuclear complexes, [M3(μ3-O)(μ-CH3COO)6(H2O)3]+ (M3=Ru3, Rh3 or Ru2Rh) in methanol-d4

Sasaki, Yōichi; Nagasawa, Akira; Tokiwa‐Yamamoto, A.; Ito, Toshimi

doi:10.1016/s0020-1693(00)92323-5

Cited by 37 publications

(36 citation statements)

References 47 publications

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“…n+ , in which L represents a monodentate ligand, [1][2][3][4][5] have been of considerable interest due to their versatility including their redox chemistry, [6][7][8][9][10] intramolecular electrontransfer on the IR timescale, [11] photoinduced electron transfer, [12] ligand substitution [13][14][15][16] and catalytic properties. [17] They are also used as molecular components for a wide range of discrete oligomers [18][19][20] and for building 2D and 3D architectures on electrode surfaces.…”

Section: Introductionmentioning

confidence: 99%

Carboxylato‐Modified New Oxo‐Centred Triruthenium Cluster Compounds with CO and Solvent Ligands: The X‐ray Structure of [Ru₃O(C₂H₅CO₂)₆(CO)(THF)₂]

2009

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New synthetic precursors for CO‐coordinated, oxo‐centred triruthenium(II,III,III) complexes with varied carboxylato groups [Ru3O(RCO2)6(CO)(solvent)2] where R = C2H5, CH3 and C6H5 have been prepared and characterised. Among the series, the propionato‐bridged complex [Ru3O(C2H5CO2)6(CO)(THF)2] (1) was structurally determined by single‐crystal X‐ray crystallography. Cyclic voltammetry revealed thatthe benzoato‐bridged complex [Ru3O(C6H5CO2)6(CO)(C2H5OH)2] in 0.1 mol dm–3 nBu4NPF6/DMF undergoes two consecutive one‐electron processes assignable to the redox of the Ru3(μ3‐O) core, the redox potentials of which are highly dependent on the electron‐donating/accepting nature of the carboxylato groups. UV‐light excitation of the compounds in CH3CN resulted in the dissociation of CO to form the tris(CH3CN) compounds [Ru3O(RCO2)6(CH3CN)3] (R = C2H5, CH3 and C6H5). These compounds are highly useful as synthetic precursors to a wide range of μ3‐oxo‐triruthenium derivatives with well‐defined redox responses. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)

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Section: Introductionmentioning

confidence: 99%

Carboxylato‐Modified New Oxo‐Centred Triruthenium Cluster Compounds with CO and Solvent Ligands: The X‐ray Structure of [Ru₃O(C₂H₅CO₂)₆(CO)(THF)₂]

2009

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“…A proximidade dos ions metálicos propicia a ocorrência de interações magnéti-cas e eletrônicas entre os sítios metálicos, tanto em compostos homonucleares, como em compostos heteronucleares do tipo [Ru 2 MO(CH 3 CO 2 ) 6 L 3 ] (M (II) = Mg [10][11][12] , Mn 8,11,13 , Co 8,11,[13][14][15] , Ni 8,11,13 , Zn 8,10-12 e M (III) = Cr 13,16 , Fe 13 , Co 14 , Rh 12,[17][18][19] ). A variedade de estados de oxidação leva a uma extensa química de valência mista.…”

Section: Introductionunclassified

Propriedades e aplicações de clusters trinucleares de carboxilatos de rutênio

Alexiou¹,

Dovidauskas²,

Toma³

2000

Quím. Nova

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Recebido em 8/12/99; aceito em 16/3/00 PROPERTIES AND APPLICATIONS OF TRINUCLEAR RUTHENIUM CARBOXYLATE CLUS-TERS. A review with 94 references focusing on µ µ µ µ µ 3 -oxo-triruthenium carboxylate clusters is presented. The electronic, magnetic, electrochemical, and catalytic properties of these compounds are discussed. Main synthetic routes and structural characteristics, including their use as building blocks in supramolecular systems are described.Keywords: ruthenium-acetate clusters; oxo-ruthenium clusters; ruthenium-carboxylated clusters; catalysis. Nas décadas passadas alguns trabalhos de revisão focalizaram a química dos clusters de rutênio [20][21][22][23][24] , e mais recentemente, apenas estudos mais específicos tem sido publicados [25][26][27] . O objetivo deste trabalho é apresentar uma visão abrangente da química destes compostos, considerando que a maioria dos trabalhos foram feitos nos anos 90 e que os aspectos recentes, mais relevantes, não foram ainda apresentados. REVISÃO INTRODUÇÃO ASPECTOS SINTÉTICOSNesse ítem, descrevemos a síntese dos clusters simétricos

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“…[41,[55][56][57] The reaction rate constant of CO liberation in the triruthenium cluster monolayer was previously carried out by evaluating the change of the peak charge in the CV with respect to the electrolysis time. [13] However, in order to record a series of CV, the reaction process has to be frequently stopped.…”

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Oxidation States and CO Ligand Exchange Kinetics in a Self‐Assembled Monolayer of a Triruthenium Cluster Studied by In Situ Infrared Spectroscopy

Zhou

Abe

et al. 2005

Chemistry A European J

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Oxidation states and CO ligand exchange kinetics in a self-assembled monolayer (SAM) of an oxo-centered triruthenium cluster [Ru(3)(mu3-O)(mu-CH3COO)6(CO)(L1)(L2)] (L1 = [(NC5H4)CH2NHC(O)(CH2)10S-]2, L2 = 4-methylpyridine) have been extensively investigated on the surface of a gold electrode in aqueous and nonaqueous solutions. The SAM exhibits three consecutive one-electron transfers and four oxidation states, which have been characterized by electrochemistry, in situ infrared spectroscopy, and in situ sum frequency generation (SFG) vibrational spectroscopy measurements. The original electron-localized state of the Ru cluster center was changed to electron delocalization states by oxidation or reduction of the central Ru ions. These changes are revealed by the IR absorptions of the CO ligand and the bridging acetate ligands of the triruthenium cluster in the SAM. The IR absorptions of the two kinds of ligands are strongly dependent on the oxidation state of the Ru cluster center. One-electron oxidation of the central Ru ion in the SAM triggers a CO ligand liberation process. Solvent molecules may then occupy the CO site to result in a CO-free SAM. One-electron reduction of this CO-free SAM in a CO-saturated solution leads to re-coordination of the CO ligand into the SAM. Both processes can be precisely controlled by tuning the electrode potential. The kinetics of the CO exchange cycle in the SAM, including liberation and coordination, has been investigated by in situ IR and SFG measurements for the first time. The CO exchange cycle is significantly dependent on the temperature. The reaction rate greatly decreases with decreasing solution temperature, which is an important factor in the CO ligand exchange process. The activation energies of both CO liberation and coordination have been evaluated from the reaction rate constants obtained at various temperatures.

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Substitution of methanol-d4 for the coordinated water in the trinuclear complexes, [M3(μ3-O)(μ-CH3COO)6(H2O)3]+ (M3=Ru3, Rh3 or Ru2Rh) in methanol-d4

Cited by 37 publications

References 47 publications

Carboxylato‐Modified New Oxo‐Centred Triruthenium Cluster Compounds with CO and Solvent Ligands: The X‐ray Structure of [Ru₃O(C₂H₅CO₂)₆(CO)(THF)₂]

Carboxylato‐Modified New Oxo‐Centred Triruthenium Cluster Compounds with CO and Solvent Ligands: The X‐ray Structure of [Ru₃O(C₂H₅CO₂)₆(CO)(THF)₂]

Propriedades e aplicações de clusters trinucleares de carboxilatos de rutênio

Oxidation States and CO Ligand Exchange Kinetics in a Self‐Assembled Monolayer of a Triruthenium Cluster Studied by In Situ Infrared Spectroscopy

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Substitution of methanol-d4 for the coordinated water in the trinuclear complexes, [M3(μ3-O)(μ-CH3COO)6(H2O)3]+ (M3=Ru3, Rh3 or Ru2Rh) in methanol-d4

Cited by 37 publications

References 47 publications

Carboxylato‐Modified New Oxo‐Centred Triruthenium Cluster Compounds with CO and Solvent Ligands: The X‐ray Structure of [Ru3O(C2H5CO2)6(CO)(THF)2]

Carboxylato‐Modified New Oxo‐Centred Triruthenium Cluster Compounds with CO and Solvent Ligands: The X‐ray Structure of [Ru3O(C2H5CO2)6(CO)(THF)2]

Propriedades e aplicações de clusters trinucleares de carboxilatos de rutênio

Oxidation States and CO Ligand Exchange Kinetics in a Self‐Assembled Monolayer of a Triruthenium Cluster Studied by In Situ Infrared Spectroscopy

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Carboxylato‐Modified New Oxo‐Centred Triruthenium Cluster Compounds with CO and Solvent Ligands: The X‐ray Structure of [Ru₃O(C₂H₅CO₂)₆(CO)(THF)₂]

Carboxylato‐Modified New Oxo‐Centred Triruthenium Cluster Compounds with CO and Solvent Ligands: The X‐ray Structure of [Ru₃O(C₂H₅CO₂)₆(CO)(THF)₂]