Electrocatalytic CO 2  reduction using rhenium(I) complexes with modified 2-(2′-pyridyl)imidazole ligands

Sinha, Soumalya; Berdichevsky, Ellan K.; Warren, Jeffrey J.

doi:10.1016/j.ica.2016.09.019

Cited by 35 publications

(50 citation statements)

References 39 publications

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“…This prompted us investigating dinuclear Re complexes with proton relays in close proximity to the metal centre in order to accelerate protonation of the intermediate during the electrochemical CO 2 ‐reduction catalysis (Figure ) . Previously, we investigated A and it showed an enhanced catalytic activity with regard to mononuclear complexes such as [Re(bpy)(CO) 3 (py)] +[9] or [Re(py‐im)(CO) 3 (Cl)] (py‐im=2‐(1 H ‐imidazol‐2‐yl)pyridine). The ligand exhibits a non‐innocent behaviour similar as previously observed in [Re(4‐dbp)(CO) 3 (Cl)] and [Re(bpy)(CO) 3 (im)] (4‐dbp=4,4’‐dihydroxy‐2,2’‐bipyridine, im=imidazole) .…”

Section: Introductionmentioning

confidence: 99%

A Dinculear Rhenium Complex with a Proton Responsive Ligand in the Electrochemical‐Driven CO₂‐Reduction Catalysis

Wilting

Siewert

2018

ChemistrySelect

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Herein, we present a detailed study on a dinuclear Re complex bearing an α‐diimine‐tricarbonyl motif and a proton responsive ligand in the electrochemical CO2 reduction catalysis. The complex exhibits a pyrazole‐pyridine entity as α‐diimine unit and a phenol moiety as internal proton relay, which show non‐innocent behaviour under reductive conditions. Initial two electron reduction leads to NH bond cleavage forming the deprotonated ligand LH−2. Further two electron reduction at considerable negative potential induces OH bond cleavage and ligand reduction. In the presence of CO2, the reduced species reacts with CO2 forming CO. The complex shows a moderate Faraday efficiency and the activity is similar to the mononuclear derivative [Re(bpy)(CO)3(py)]+ (py=pyridine, bpy=2,2′‐bipyridine).

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Section: Introductionmentioning

confidence: 99%

A Dinculear Rhenium Complex with a Proton Responsive Ligand in the Electrochemical‐Driven CO₂‐Reduction Catalysis

Wilting

Siewert

2018

ChemistrySelect

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“…[13,14] Organicp olymers rich in nitrogen, such as polymers based on bipyridine, benzimidazole, and polyaniline (PANI), are the most studied polymer catalysts or catalysts upports for the CO 2 RR. These polymers usually contain nitrogen functionalities that possess catalytic activity or complex with metal cationso r anchorm etal nanoparticles (NPs) either within the polymer backbone or on the pendant chain.…”

Section: Conducting Polymersmentioning

confidence: 99%

“…These polymers usually contain nitrogen functionalities that possess catalytic activity or complex with metal cationso r anchorm etal nanoparticles (NPs) either within the polymer backbone or on the pendant chain. [13,14] Organicp olymers rich in nitrogen, such as polymers based on bipyridine, benzimidazole, and polyaniline (PANI), are the most studied polymer catalysts or catalysts upports for the CO 2 RR. Metal-free and nitrogen-rich imidazole, porphyrin, and their derivatives were reported to be applicable catalysts in the CO 2 RR.…”

Section: Conducting Polymersmentioning

confidence: 99%

“…Conducting polymers are generally used as catalysts directly or as supports of heterogeneous electrocatalysts of the CO 2 RR. These polymers usually contain nitrogen functionalities that possess catalytic activity or complex with metal cations or anchor metal nanoparticles (NPs) either within the polymer backbone or on the pendant chain . Organic polymers rich in nitrogen, such as polymers based on bipyridine, benzimidazole, and polyaniline (PANI), are the most studied polymer catalysts or catalyst supports for the CO 2 RR.…”

Section: Role Of Organic Components In Co2rrmentioning

confidence: 99%

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Role of Organic Components in Electrocatalysis for Renewable Energy Storage

Liu

Bai

Zhang

et al. 2018

Chemistry A European J

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Carbon dioxide electroreduction and water splitting are known as two promising strategies to convert renewable intermittent electrical energy into chemical energy. Thus, the three half-reactions, namely, CO reduction reaction, hydrogen evolution reaction, and the oxygen evolution counter reaction, in these two electrolytic processes have attracted wide research interest. Organic polymer electrocatalysts or electrocatalysts containing organic components play important roles in these catalytic processes. It has been shown that the organic molecules can efficiently catalyze the reactions themselves, and modulate the active sites towards high selectivity and efficiency. The roles of the organic molecules in conducting polymers, the metal complexes, and the framework materials are extracted for the three half-reactions mentioned above, and this comprehensive review will serve as a guide for future research and aid in the design of electrocatalysts related to organic molecules.

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“…A recent study on a ternary Fe(III) complex has shown that the complex binds to DNA via an intercalation binding mode . Rhenium(I) complexes of imidazole derivatives have been used for electrocatalytic CO 2 reduction . Imidazole‐copper‐based catalysts have recently been studied for application in lowering water oxidation overpotentials .…”

Section: Introductionmentioning

confidence: 99%

New Pyrazole‐ and Benzimidazole‐derived Ligand Systems

Nozari

Addison

Reeves

et al. 2018

Journal of Heterocyclic Chem

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A series of N‐containing heterocyclic compounds have been synthesized using approaches such as the well‐known Knorr synthesis, and a facile N‐alkylation method. This series of compounds includes pyrazole derivatives, tris(2‐benzimidazolylmethyl)amine derivatives, and “pincer” ligands. Characterization methods include 1H NMR, FT‐IR, CHN analyses, UV‐vis spectroscopy, and fluorimetry, while X‐ray crystal structures are reported for most of the compounds. The crystallographic results affirm a 13C NMR method for isomer assignment of substituted pyrazoles.

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Electrocatalytic CO 2 reduction using rhenium(I) complexes with modified 2-(2′-pyridyl)imidazole ligands

Cited by 35 publications

References 39 publications

A Dinculear Rhenium Complex with a Proton Responsive Ligand in the Electrochemical‐Driven CO₂‐Reduction Catalysis

A Dinculear Rhenium Complex with a Proton Responsive Ligand in the Electrochemical‐Driven CO₂‐Reduction Catalysis

Role of Organic Components in Electrocatalysis for Renewable Energy Storage

New Pyrazole‐ and Benzimidazole‐derived Ligand Systems

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Electrocatalytic CO 2 reduction using rhenium(I) complexes with modified 2-(2′-pyridyl)imidazole ligands

Cited by 35 publications

References 39 publications

A Dinculear Rhenium Complex with a Proton Responsive Ligand in the Electrochemical‐Driven CO2‐Reduction Catalysis

A Dinculear Rhenium Complex with a Proton Responsive Ligand in the Electrochemical‐Driven CO2‐Reduction Catalysis

Role of Organic Components in Electrocatalysis for Renewable Energy Storage

New Pyrazole‐ and Benzimidazole‐derived Ligand Systems

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Product

Resources

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A Dinculear Rhenium Complex with a Proton Responsive Ligand in the Electrochemical‐Driven CO₂‐Reduction Catalysis

A Dinculear Rhenium Complex with a Proton Responsive Ligand in the Electrochemical‐Driven CO₂‐Reduction Catalysis