A Bpp-based dinuclear ruthenium photocatalyst for visible light-driven oxidation reactions

Seán Hennessey; Pau Farràs; Jordi Benet-Buchholz; Antoni Llobet

doi:10.13025/14942

A Bpp-based dinuclear ruthenium photocatalyst for visible light-driven oxidation reactions

Seán Hennessey
, Pau Farràs
, Jordi Benet-Buchholz
, Antoni Llobet

Sustainable World

University of Galway
Institute of Chemical Research of Catalonia (ICIQ)
Autonomous University of Barcelona (UAB)

Research output: Contribution to a Journal (Peer & Non Peer) › Article › peer-review

13 Citations (Scopus)

Abstract

A diruthenium dyad molecule consisting of a 2,2-(1H-pyrazole-3,5-diyl)dipyridine (Hbpp) bridging ligand with the formula out-/in-[(bpy)₂Ru(bpp)Ru(L)(tpy)]ⁿ⁺ (bpy = 2,2′-bipyridine, tpy = 2,2′:6′,2′′-terpyridine, L = Cl, CF₃COO^-, H₂O or CH₃CN and n = 2 or 3) has been prepared and fully characterised. The complex has been characterized by analytical and spectroscopic techniques and by X-ray diffraction analysis for two of the derivatives (Cl and CH₃CN). Additionally, full electrochemical characterization based on cyclic voltammetry and square wave voltammetry has been also performed. The pH dependence of the redox couples for the aqua complex has also been studied and the corresponding Pourbaix diagram drawn. Furthermore, the capacity to photo-catalytically oxidize organic substrates, such as alcohols, alkenes, and sulfides, has been carried out and the overall stability and selectivity of the catalyst has been analysed.

Original language	English
Pages (from-to)	6760-6768
Number of pages	9
Journal	Catalysis Science and Technology
Volume	9
Issue number	23
DOIs	https://doi.org/10.13025/14942 https://doi.org/10.1039/c9cy01796h
Publication status	Published - 2019

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10.13025/14942Licence: CC BY-NC-ND
10.1039/c9cy01796h

Pre-print Cat Sci Tech 2019-bppAccepted author manuscript, 1.33 MBLicence: CC BY-NC-ND

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title = "A Bpp-based dinuclear ruthenium photocatalyst for visible light-driven oxidation reactions",

abstract = "A diruthenium dyad molecule consisting of a 2,2-(1H-pyrazole-3,5-diyl)dipyridine (Hbpp) bridging ligand with the formula out-/in-[(bpy)2Ru(bpp)Ru(L)(tpy)]n+ (bpy = 2,2′-bipyridine, tpy = 2,2′:6′,2′′-terpyridine, L = Cl, CF3COO-, H2O or CH3CN and n = 2 or 3) has been prepared and fully characterised. The complex has been characterized by analytical and spectroscopic techniques and by X-ray diffraction analysis for two of the derivatives (Cl and CH3CN). Additionally, full electrochemical characterization based on cyclic voltammetry and square wave voltammetry has been also performed. The pH dependence of the redox couples for the aqua complex has also been studied and the corresponding Pourbaix diagram drawn. Furthermore, the capacity to photo-catalytically oxidize organic substrates, such as alcohols, alkenes, and sulfides, has been carried out and the overall stability and selectivity of the catalyst has been analysed.",

author = "Se{\'a}n Hennessey and Pau Farr{\`a}s and Jordi Benet-Buchholz and Antoni Llobet",

note = "Publisher Copyright: {\textcopyright} 2019 The Royal Society of Chemistry.",

year = "2019",

doi = "10.13025/14942",

language = "English",

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T1 - A Bpp-based dinuclear ruthenium photocatalyst for visible light-driven oxidation reactions

AU - Hennessey, Seán

AU - Farràs, Pau

AU - Benet-Buchholz, Jordi

AU - Llobet, Antoni

PY - 2019

Y1 - 2019

N2 - A diruthenium dyad molecule consisting of a 2,2-(1H-pyrazole-3,5-diyl)dipyridine (Hbpp) bridging ligand with the formula out-/in-[(bpy)2Ru(bpp)Ru(L)(tpy)]n+ (bpy = 2,2′-bipyridine, tpy = 2,2′:6′,2′′-terpyridine, L = Cl, CF3COO-, H2O or CH3CN and n = 2 or 3) has been prepared and fully characterised. The complex has been characterized by analytical and spectroscopic techniques and by X-ray diffraction analysis for two of the derivatives (Cl and CH3CN). Additionally, full electrochemical characterization based on cyclic voltammetry and square wave voltammetry has been also performed. The pH dependence of the redox couples for the aqua complex has also been studied and the corresponding Pourbaix diagram drawn. Furthermore, the capacity to photo-catalytically oxidize organic substrates, such as alcohols, alkenes, and sulfides, has been carried out and the overall stability and selectivity of the catalyst has been analysed.

AB - A diruthenium dyad molecule consisting of a 2,2-(1H-pyrazole-3,5-diyl)dipyridine (Hbpp) bridging ligand with the formula out-/in-[(bpy)2Ru(bpp)Ru(L)(tpy)]n+ (bpy = 2,2′-bipyridine, tpy = 2,2′:6′,2′′-terpyridine, L = Cl, CF3COO-, H2O or CH3CN and n = 2 or 3) has been prepared and fully characterised. The complex has been characterized by analytical and spectroscopic techniques and by X-ray diffraction analysis for two of the derivatives (Cl and CH3CN). Additionally, full electrochemical characterization based on cyclic voltammetry and square wave voltammetry has been also performed. The pH dependence of the redox couples for the aqua complex has also been studied and the corresponding Pourbaix diagram drawn. Furthermore, the capacity to photo-catalytically oxidize organic substrates, such as alcohols, alkenes, and sulfides, has been carried out and the overall stability and selectivity of the catalyst has been analysed.

UR - http://hdl.handle.net/10379/15841

UR - https://www.scopus.com/pages/publications/85075744090

U2 - 10.13025/14942

DO - 10.13025/14942

M3 - Article

SN - 2044-4753

VL - 9

SP - 6760

EP - 6768

JO - Catalysis Science and Technology

JF - Catalysis Science and Technology

IS - 23

ER -

A Bpp-based dinuclear ruthenium photocatalyst for visible light-driven oxidation reactions

Abstract

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