New dinuclear ruthenium complexes: Structure and oxidative catalysis

Carlo Di Giovanni; Lydia Vaquer; Xavier Sala; Jordi Benet-Buchholz; Antoni Llobet

doi:10.1021/ic302481s

New dinuclear ruthenium complexes: Structure and oxidative catalysis

Carlo Di Giovanni, Lydia Vaquer, Xavier Sala, Jordi Benet-Buchholz, Antoni Llobet

Department of Chemistry

Research output: Contribution to journal › Article › Research › peer-review

23 Citations (Scopus)

Abstract

The synthesis of new dinuclear complexes of the general formula {[Ru II(trpy)]2(μ-pdz-dc)(μ-(L)}+ [pdz-dc is the pyridazine-3,6-dicarboxylate dianion; trpy is 2,2′:6′,2″- terpyridine; L = Cl (1+) or OH (2+)] is described. These complexes are characterized by the usual analytical and spectroscopic techniques and by X-ray diffraction analysis. Their redox properties are characterized by means of cyclic voltammetry (CV) and differential pulse voltammetry (DPV). Complex 2+ is used as the starting material to prepare the corresponding Ru-aqua complex {[RuII(trpy)(H2O)] 2(μ-pdz-dc)}2+ (32+), whose electrochemistry is also investigated by means of CV and DPV. Complex 32+ is able to catalytically and electrocatalytically oxidize water to dioxygen with moderate efficiencies. In sharp contrast, 32+ is a superb catalyst for the epoxidation of alkenes. For the particular case of cis-β-methylstyrene, the catalyst is capable of carrying out 1320 turnovers with a turnover frequency of 11.0 cycles min-1, generating cis-β-methylstyrene oxide stereospecifically. © 2013 American Chemical Society.

Original language	English
Pages (from-to)	4335-4345
Journal	Inorganic Chemistry
Volume	52
Issue number	8
DOIs	https://doi.org/10.1021/ic302481s
Publication status	Published - 15 Apr 2013

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title = "New dinuclear ruthenium complexes: Structure and oxidative catalysis",

abstract = "The synthesis of new dinuclear complexes of the general formula {[Ru II(trpy)]2(μ-pdz-dc)(μ-(L)}+ [pdz-dc is the pyridazine-3,6-dicarboxylate dianion; trpy is 2,2′:6′,2″- terpyridine; L = Cl (1+) or OH (2+)] is described. These complexes are characterized by the usual analytical and spectroscopic techniques and by X-ray diffraction analysis. Their redox properties are characterized by means of cyclic voltammetry (CV) and differential pulse voltammetry (DPV). Complex 2+ is used as the starting material to prepare the corresponding Ru-aqua complex {[RuII(trpy)(H2O)] 2(μ-pdz-dc)}2+ (32+), whose electrochemistry is also investigated by means of CV and DPV. Complex 32+ is able to catalytically and electrocatalytically oxidize water to dioxygen with moderate efficiencies. In sharp contrast, 32+ is a superb catalyst for the epoxidation of alkenes. For the particular case of cis-β-methylstyrene, the catalyst is capable of carrying out 1320 turnovers with a turnover frequency of 11.0 cycles min-1, generating cis-β-methylstyrene oxide stereospecifically. {\textcopyright} 2013 American Chemical Society.",

author = "{Di Giovanni}, Carlo and Lydia Vaquer and Xavier Sala and Jordi Benet-Buchholz and Antoni Llobet",

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T1 - New dinuclear ruthenium complexes: Structure and oxidative catalysis

AU - Di Giovanni, Carlo

AU - Vaquer, Lydia

AU - Sala, Xavier

AU - Benet-Buchholz, Jordi

AU - Llobet, Antoni

PY - 2013/4/15

Y1 - 2013/4/15

N2 - The synthesis of new dinuclear complexes of the general formula {[Ru II(trpy)]2(μ-pdz-dc)(μ-(L)}+ [pdz-dc is the pyridazine-3,6-dicarboxylate dianion; trpy is 2,2′:6′,2″- terpyridine; L = Cl (1+) or OH (2+)] is described. These complexes are characterized by the usual analytical and spectroscopic techniques and by X-ray diffraction analysis. Their redox properties are characterized by means of cyclic voltammetry (CV) and differential pulse voltammetry (DPV). Complex 2+ is used as the starting material to prepare the corresponding Ru-aqua complex {[RuII(trpy)(H2O)] 2(μ-pdz-dc)}2+ (32+), whose electrochemistry is also investigated by means of CV and DPV. Complex 32+ is able to catalytically and electrocatalytically oxidize water to dioxygen with moderate efficiencies. In sharp contrast, 32+ is a superb catalyst for the epoxidation of alkenes. For the particular case of cis-β-methylstyrene, the catalyst is capable of carrying out 1320 turnovers with a turnover frequency of 11.0 cycles min-1, generating cis-β-methylstyrene oxide stereospecifically. © 2013 American Chemical Society.

AB - The synthesis of new dinuclear complexes of the general formula {[Ru II(trpy)]2(μ-pdz-dc)(μ-(L)}+ [pdz-dc is the pyridazine-3,6-dicarboxylate dianion; trpy is 2,2′:6′,2″- terpyridine; L = Cl (1+) or OH (2+)] is described. These complexes are characterized by the usual analytical and spectroscopic techniques and by X-ray diffraction analysis. Their redox properties are characterized by means of cyclic voltammetry (CV) and differential pulse voltammetry (DPV). Complex 2+ is used as the starting material to prepare the corresponding Ru-aqua complex {[RuII(trpy)(H2O)] 2(μ-pdz-dc)}2+ (32+), whose electrochemistry is also investigated by means of CV and DPV. Complex 32+ is able to catalytically and electrocatalytically oxidize water to dioxygen with moderate efficiencies. In sharp contrast, 32+ is a superb catalyst for the epoxidation of alkenes. For the particular case of cis-β-methylstyrene, the catalyst is capable of carrying out 1320 turnovers with a turnover frequency of 11.0 cycles min-1, generating cis-β-methylstyrene oxide stereospecifically. © 2013 American Chemical Society.

U2 - 10.1021/ic302481s

DO - 10.1021/ic302481s

M3 - Article

SN - 0020-1669

VL - 52

SP - 4335

EP - 4345

JO - Inorganic Chemistry

JF - Inorganic Chemistry

IS - 8

ER -

New dinuclear ruthenium complexes: Structure and oxidative catalysis

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