Electrochemical Reduction of CO2to CO Catalyzed by a Bimetallic Palladium Complex

2006 ◽  
Vol 25 (14) ◽  
pp. 3345-3351 ◽  
Author(s):  
James W. Raebiger ◽  
Jeffrey W. Turner ◽  
Bruce C. Noll ◽  
Calvin J. Curtis ◽  
Alex Miedaner ◽  
...  
Keyword(s):  
Electrochemical Reduction ◽  
Palladium Complex ◽  
Bimetallic Palladium

Product-Derived Bimetallic Palladium Complex Catalyzes Direct Carbonylation of Sulfonylazides

2016 ◽  
Vol 128 (18) ◽  
pp. 5635-5639 ◽  
Author(s):  
Jin Zhao ◽  
Zongyang Li ◽  
Shaole Song ◽  
Ming-An Wang ◽  
Bin Fu ◽  
...  
Keyword(s):  
Palladium Complex ◽  
Bimetallic Palladium

Product-Derived Bimetallic Palladium Complex Catalyzes Direct Carbonylation of Sulfonylazides

2016 ◽  
Vol 55 (18) ◽  
pp. 5545-5549 ◽  
Author(s):  
Jin Zhao ◽  
Zongyang Li ◽  
Shaole Song ◽  
Ming-An Wang ◽  
Bin Fu ◽  
...  
Keyword(s):  
Palladium Complex ◽  
Bimetallic Palladium

Synthesis and redox properties of a phosphine-subsituted para-dioxolene and its bimetallic palladium complex

2008 ◽  
Vol 86 (10) ◽  
pp. 976-981 ◽  
Author(s):  
Sharon L Caldwell ◽  
Joe B Gilroy ◽  
Rajsapan Jain ◽  
Evan Crawford ◽  
Brian O Patrick ◽  
...  
Keyword(s):  
Palladium Complex ◽  
Electronic Spectroscopy ◽  
Chemical Oxidation ◽  
Redox Properties ◽  
Redox Activity ◽  
Redox Potentials ◽  
Cationic Complex ◽  
Bridging Ligands ◽  
Reduction Potentials ◽  
Bimetallic Palladium

Oxidation of 2,5-bis(diphenylphosphino)-1,4-hydroquinone (8) with iodobenzene diacetate produces the corresponding bis(phosphine) substituted benzoquinone (9), the first phosphine-substitued quinone. Cyclic voltammetry studies reveal that the redox functionality of the quinone unit in 9 is retained, and the reduction potentials render this compound slightly more easily reduced than the parent p-benzoquinone. Reaction of the precursor hydroquinone 8 with Pd(hfac)2 affords a binuclear complex 10 with the hydroquinonate ligand bridging two Pd(hfac) substrates. The redox activity of the bridging dioxolene ligand is retained in complex 10, although there are significant changes in the redox potentials relative to those of the free quinone 9. Chemical oxidation of 10 with AgPF6 yields a persistent cationic complex 11, which, based on EPR and electronic spectroscopy, can be formulated as containing a bridging semiquinone ligand.Key words: p-quinones, phosphines, bridging ligands, redox properties.

ChemInform Abstract: Product-Derived Bimetallic Palladium Complex Catalyzes Direct Carbonylation of Sulfonylazides.

ChemInform ◽  
2016 ◽  
Vol 47 (36) ◽  
Author(s):  
Jin Zhao ◽  
Zongyang Li ◽  
Shaole Song ◽  
Ming-An Wang ◽  
Bin Fu ◽  
...  
Keyword(s):  
Palladium Complex ◽  
Bimetallic Palladium

A rare P, C−bridged bimetallic palladium complex

2018 ◽  
Vol 862 ◽  
pp. 1-6 ◽  
Author(s):  
Jin Zhang ◽  
Baoyan Xing ◽  
Jianguo Zhao ◽  
Guibin Ma ◽  
Robert McDonald ◽  
...  
Keyword(s):  
Palladium Complex ◽  
Bimetallic Palladium

In Situ X-Ray Absorption Studies of the Electrochemical Reduction of Hydroxocobalamin

1997 ◽  
Vol 7 (C2) ◽  
pp. C2-619-C2-620 ◽  
Author(s):  
M. Giorgett ◽  
I. Ascone ◽  
M. Berrettoni ◽  
S. Zamponi ◽  
R. Marassi
Keyword(s):  
Electrochemical Reduction ◽  
X Ray ◽  
Absorption Studies ◽  
X Ray Absorption

Lateral Adsorbate Interactions Inhibit HCOO- While Promoting CO Selectivity for CO2 Electrocatalysis on Ag

2018 ◽  
Author(s):  
Divya Bohra ◽  
Isis Ledezma-Yanez ◽  
Guanna Li ◽  
Wiebren De Jong ◽  
Evgeny A. Pidko ◽  
...  
Keyword(s):  
Electrochemical Reduction ◽  
Experimental Approach ◽  
Decisive Role ◽  
Experimental Methods ◽  
Reaction Intermediates ◽  
Intermediate Species ◽  
Experimental Knowledge ◽  
Complex Interactions ◽  
Ag Catalysts

<p>The analysis presented in this manuscript helps bridge an important fundamental discrepancy between the existing theoretical and experimental knowledge regarding the performance of Ag catalysts for CO<sub>2</sub> electrochemical reduction (CO<sub>2</sub>ER). The results demonstrate how the intermediate species *OCHO is formed readily en-route the HCOO<sup>– </sup>pathway and plays a decisive role in determining selectivity of a predominantly CO producing catalyst such as Ag. Our theoretical and experimental approach develops a better understanding of the nature of competition as well as the complex interactions between the reaction intermediates leading to CO, HCOO<sup>–</sup> and H<sub>2</sub> during CO<sub>2</sub>ER.</p><p><br></p><p>Details of computational and experimental methods are present in the Supporting Information provided. </p><p><br></p><p><br></p>

Photochemical and Electrochemical Reduction of Carbon Dioxide Catalyzed by a Polyoxometalate-Organic Photosensitizer Complex

2018 ◽  
Author(s):  
Chandan Dey ◽  
Ronny Neumann
Keyword(s):  
Carbon Dioxide ◽  
Cyclic Voltammetry ◽  
Formic Acid ◽  
Electrochemical Reduction ◽  
Mass Spectroscopy ◽  
Photochemical Reactions ◽  
Reducing Agent ◽  
Covalent Attachment ◽  
Hybrid Complex ◽  
Open Face

<p>A manganese substituted Anderson type polyoxometalate, [MnMo<sub>6</sub>O<sub>24</sub>]<sup>9-</sup>, tethered with an anthracene photosensitizer was prepared and used as catalyst for CO<sub>2</sub> reduction. The polyoxometalate-photosensitizer hybrid complex, obtained by covalent attachment of the sensitizer to only one face of the planar polyoxometalate, was characterized by NMR, IR and mass spectroscopy. Cyclic voltammetry measurements show a catalytic response for the reduction of carbon dioxide, thereby suggesting catalysis at the manganese site on the open face of the polyoxometalate. Controlled potentiometric electrolysis showed the reduction of CO<sub>2</sub> to CO with a TOF of ~15 sec<sup>-1</sup>. Further photochemical reactions showed that the polyoxometalate-anthracene hybrid complex was active for the reduction of CO<sub>2</sub> to yield formic acid and/or CO in varying amounts dependent on the reducing agent used. Control experiments showed that the attachment of the photosensitizer to [MnMo<sub>6</sub>O<sub>24</sub>]<sup>9-</sup> is necessary for photocatalysis.</p><div><br></div>

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