Anisotropic mixed-valence systems. Dimers of the delocalized clusters [Ru3O(CH3CO2)6(L)3]n+

Baumann, John A.; Salmon, Dennis J.; Wilson, Stephen T.; Meyer, Thomas J.

doi:10.1021/ic50199a029

Cited by 74 publications

(38 citation statements)

References 2 publications

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“…In the second reduction process (Fig. 3b), besides an additional destabilization of the [Ru 3 O] levels due to the addition of a second electron, an increase in intensity is observed around 690 nm, ascribed to a CLCT transition to the BPE bridge; this behaviour is in agreement with that observed earlier for trinuclear complexes bridged by p-conjugated ligands [13,14,[56][57][58][59][60][61]. The final reductive process (Fig.…”

Section: Esi-ms and Esi-ms/ms Structural Characterizationsupporting

confidence: 89%

Synthesis and characterization of the [Ru3O(CH3COO)6(py)2(BPE)Ru(bpy)2Cl](PF6)2 dimer

Nikolaou

Tomazela

Eberlin

et al. 2008

Transition Met Chem

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The polymetallic [Ru 3 O(CH 3 COO) 6 (py) 2 (BPE)-Ru(bpy) 2 Cl](PF 6 ) 2 complex (bpy = 2,2 0 -bipyridine, BPE = trans-1,2-bis(4-pyridil)ethylene and py = pyridine) was assembled by the combination of an electroactive [Ru 3 O] moiety with a [Ru(bpy) 2 (BPE)Cl] photoactive centre, and its structure was determined using positive ion electrospray (ESI-MS) and tandem mass (ESI-MS/MS) spectrometry. The [Ru 3 O(CH 3 COO) 6 (py) 2 (BPE)Ru(bpy) 2 Cl] 2? doubly charged ion of m/z 732 was mass-selected and subject to 15 eV collision-induced dissociation, leading to a specific dissociation pattern, diagnostic of the complex structure. The electronic spectra display broad bands at 409, 491 and 692 nm ascribed to the [Ru(bpy) 2 (BPE)] charge-transfer bands and to the [Ru 3 O] internal cluster transitions. The cyclic voltammetry shows five reversible waves at -1.07 V, 0.13 V, 1.17 V, 2.91 V and -1.29 V (vs SHE) assigned to the [Ru 3 O] -1/0/?1/?2/?3 and to the bpy 0/-1 redox processes; also a wave is observed at 0.96 V, assigned to the Ru ?2/?3 pair. Despite the conjugated BPE bridge, the electrochemical and spectroelectrochemical results indicate only a weak coupling through the p-system, and preliminary photophysical essays showed the compound decomposes under visible light irradiation.

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Section: Esi-ms and Esi-ms/ms Structural Characterizationsupporting

confidence: 89%

Synthesis and characterization of the [Ru3O(CH3COO)6(py)2(BPE)Ru(bpy)2Cl](PF6)2 dimer

Nikolaou

Tomazela

Eberlin

et al. 2008

Transition Met Chem

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“…Careful consideration of the electronic structure [53][54][55] along with DFT calculations of Ru 3 O Table 4 Summary of observed frequencies and relative peak intensities of resonant Raman spectra of 4-6 in the neutral and mixed-valence state [15].…”

Section: The Bridge Is Rocking: Entanglement Of Bridging Ligand Normamentioning

confidence: 99%

Inter- or intramolecular electron transfer between triruthenium clusters: we’ll cross that bridge when we come to it

Glover

Goeltz

Lear

et al. 2010

Coordination Chemistry Reviews

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“…Nessa linha, a auto-estruturação via ligantes em ponte representa a forma mais simples de obtenção de sistemas organizados 88 . Assim, utilizando principalmente pirazina e 4,4'-bipiridina foram obtidos dímeros 41 A estratégia sintética utilizada envolve a reação de um cluster contendo um sítio lábil e outro com um ligante de ponte. Alternativamente pode-se utilizar um cluster totalmente assimétrico [Ru 3 O(CH 3 CO 2 ) 6 (py)(CO)(H 2 O)] que possua um sítio inerte, um lábil e outro fotodissociável de modo a permitir a construção de oligômeros 47 (Figura 5).…”

Section: Considerações Finaisunclassified

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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Anisotropic mixed-valence systems. Dimers of the delocalized clusters [Ru3O(CH3CO2)6(L)3]n+

Cited by 74 publications

References 2 publications

Synthesis and characterization of the [Ru3O(CH3COO)6(py)2(BPE)Ru(bpy)2Cl](PF6)2 dimer

Synthesis and characterization of the [Ru3O(CH3COO)6(py)2(BPE)Ru(bpy)2Cl](PF6)2 dimer

Inter- or intramolecular electron transfer between triruthenium clusters: we’ll cross that bridge when we come to it

Propriedades e aplicações de clusters trinucleares de carboxilatos de rutênio

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