Mixed-valence μ3-oxo-centered triruthenium cluster [Ru3(II,III,III)(μ3-O)(μ-CH3CO2)6(H2O)3]·2H2O: Synthesis, structural characterization, valence-state delocalization and catalytic behavior

Dikhtiarenko, Alla; Khainakov, Sergei A.; Garcı́a, José R.; Gimeno, José

doi:10.1016/j.ica.2016.05.046

Cited by 17 publications

(10 citation statements)

References 47 publications

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“…The trinuclear oxo ruthenium acetate cluster complexes (or oxo–triruthenium cluster) have the general formula [(Ru 3 O)(CH 3 COO) 6 L 3 ], where the ligand L can be substituted by heterocyclic molecules, creating complexes capable to work like bridges, generating hybrid films, dendrimers, inorganic polymeric films, catalysis, and other applications. − …”

Section: Introductionmentioning

confidence: 99%

Selecting the Mechanism of Surface-Enhanced Raman Scattering Effect using Shell Isolated Nanoparticles and an Oxo–Triruthenium Acetate Cluster Complex

et al. 2019

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After more than 40 years, surface-enhanced Raman spectroscopy (SERS) stills attract much attention from chemists, not only because of the synthesis of plasmonic nanostructures but also due to the several simultaneous mechanisms which still remain unclear. One of the possibilities for a better understanding of the SERS mechanisms is the utilization of suitable inorganic complexes. The use of inorganic complexes makes it possible to observe the two main SERS mechanisms (electromagnetic and chemical) and to observe the intensification of Raman scattering due to the resonance Raman effect. In this publication, the observation of these mechanisms was possible utilizing an unpublished and very interesting complex with two oxo–triruthenium acetate clusters and an iron bis(terpyridine) in its structure (seven metals) and which interacted with bare gold nanoparticles and shell-isolated gold nanoparticles (SHIN), with a 1 nm silica shell. The utilization of SHIN allowed to quench the SERS chemical mechanism and led to a spectrum where iron–terpyridine peaks are absent and only the modes related to [Ru3O] center were observed (due to enhancement by resonance Raman, SERRS); it can be said that the the shell-isolated nanoparticles enhanced resonance Raman spectroscopy (SHINERRS) is observed. This approach led to a perfect selection of SERS mechanisms never seen before with any other molecule/complex. As can be seen in the UV–vis spectrum, this complex has a strong band around 700 nm, which suggests that silica shell enhances only surface-enhanced resonance Raman scattering, a long-distance phenomenon, different from chemical enhancement (a short-distance phenomenon). Additionally, along with the Raman spectroscopy results, cyclic voltammetry, UV–vis spectroelectrochemistry, resonance Raman (using 568 and 676 nm lasers), and density functional theory calculations of this new ruthenium cluster are presented.

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Section: Introductionmentioning

confidence: 99%

Selecting the Mechanism of Surface-Enhanced Raman Scattering Effect using Shell Isolated Nanoparticles and an Oxo–Triruthenium Acetate Cluster Complex

et al. 2019

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“…Metal–metal bonded diruthenium compounds are well-documented and are of current interest due to their magnetic, − structural, − chemical, − electrochemical, − and catalytic properties . The most stable and common types of these compounds are Ru 2 5+ species since most are formed from the Ru 2 5+ synthon Ru 2 (OAc) 4 Cl .…”

Section: Introductionmentioning

confidence: 99%

Electronic Structure of Anilinopyridinate-Supported Ru₂⁵⁺ Paddlewheel Compounds

et al. 2017

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The electronic structures of the diruthenium compounds Ru(ap)Cl (1, ap = 2-anilinopyridinate) and Ru(ap)OTf (2) were investigated with UV-vis, resonance Raman, and magnetic circular dichroism (MCD) spectroscopies; SQUID magnetometry; and density functional theory (DFT) calculations. Both compounds have quartet spin ground states with large axial zero-field splitting of ∼60 cm that is characteristic of Ru compounds having a (π*, δ*) electron configuration and a Ru-Ru bond order of ∼2.5. Two major visible absorption features are observed at ∼770 and 430 nm in the electronic spectra, the assignments of which have previously been ambiguous. Both bands have significant charge-transfer character with some contributions from d → d transitions. MCD spectra were measured to enable the identification of d → d transitions that are not easily observable by UV-vis spectroscopy. In this way, we are able to identify bands due to δ → δ* and δ → π* transitions at ∼16 100 and 11 200-12 300 cm, respectively, the latter band being sensitive to the π-donating character of the axial ligand. The Ru-Ru stretches are coupled with pyridine rocking motions and give rise to observed resonance Raman peaks at ∼350 and 420 cm, respectively.

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“…20 Owing to their interesting electronic, magnetic, and catalytic properties, these compounds have been applied to sensors, 21 electrochromic switches, 22 and heat shields 23 and as catalysts or electrocatalysts. 24,25 Recently, carbon materials have been combined with pseudocapacitive or battery-like materials in order to obtain highly effective energy storage devices. For example, G/ polyaniline (G/PAni), 26 carbon nanotubes/polyaniline (CNTs/PAni), 27 G/RuO 2 , 28 and G/MnO 2 29 have been studied, finding that both G and CNTs improve the pseudocapacitive performance of both PAni and metal oxides because of the synergistic effect.…”

Section: ■ Introductionmentioning

confidence: 99%

Graphene Modified with Triruthenium Acetate Clusters as an Electrode for the Hybrid Energy Storage System

Mendoza

Naidek

Cesca

et al. 2020

ACS Appl. Nano Mater.

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Electrodes combining battery and supercapacitor materials are an alternative to enhance energy and power densities in energy storage devices. Herein, a material of graphene modified with the triruthenium acetate coordination compound was synthesized through covalent functionalization of graphene. The structure and chemical composition of the material were characterized using scanning electron microscopy and infrared, Raman, and X-ray photoelectron spectroscopies. The electrochemical characterization through cyclic voltammetry and discharge curves revealed that triruthenium cluster-functionalized graphene has excellent charge−discharge capability with a cycling retention over 98% after 5000 cycles. Also, a synergistic effect was found at low specific discharge currents, with contributions of the triruthenium cluster Faradaic process and graphene double-layer capacitance to the storage capacity. At a specific discharge current of 0.25 A g −1 , the capacity of triruthenium cluster-functionalized graphene is 1.2 times that of graphene, reaching a specific capacitance of 11 F g −1 , but the capacity is limited by charge transport at high current densities and scan rates.

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Mixed-valence μ3-oxo-centered triruthenium cluster [Ru3(II,III,III)(μ3-O)(μ-CH3CO2)6(H2O)3]·2H2O: Synthesis, structural characterization, valence-state delocalization and catalytic behavior

Cited by 17 publications

References 47 publications

Selecting the Mechanism of Surface-Enhanced Raman Scattering Effect using Shell Isolated Nanoparticles and an Oxo–Triruthenium Acetate Cluster Complex

Selecting the Mechanism of Surface-Enhanced Raman Scattering Effect using Shell Isolated Nanoparticles and an Oxo–Triruthenium Acetate Cluster Complex

Electronic Structure of Anilinopyridinate-Supported Ru₂⁵⁺ Paddlewheel Compounds

Graphene Modified with Triruthenium Acetate Clusters as an Electrode for the Hybrid Energy Storage System

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Mixed-valence μ3-oxo-centered triruthenium cluster [Ru3(II,III,III)(μ3-O)(μ-CH3CO2)6(H2O)3]·2H2O: Synthesis, structural characterization, valence-state delocalization and catalytic behavior

Cited by 17 publications

References 47 publications

Selecting the Mechanism of Surface-Enhanced Raman Scattering Effect using Shell Isolated Nanoparticles and an Oxo–Triruthenium Acetate Cluster Complex

Selecting the Mechanism of Surface-Enhanced Raman Scattering Effect using Shell Isolated Nanoparticles and an Oxo–Triruthenium Acetate Cluster Complex

Electronic Structure of Anilinopyridinate-Supported Ru25+ Paddlewheel Compounds

Graphene Modified with Triruthenium Acetate Clusters as an Electrode for the Hybrid Energy Storage System

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Electronic Structure of Anilinopyridinate-Supported Ru₂⁵⁺ Paddlewheel Compounds