Electrochemical and Photochemical Reduction of CO2 Catalyzed by Re(I) Complexes Carrying Local Proton Sources

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F19%3A00505698" target="_blank" >RIV/61388955:_____/19:00505698 - isvavai.cz</a>
Result on the web
<a href="http://hdl.handle.net/11104/0297110" target="_blank" >http://hdl.handle.net/11104/0297110</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acs.organomet.8b00588" target="_blank" >10.1021/acs.organomet.8b00588</a>

Result language
angličtina
Original language name
Electrochemical and Photochemical Reduction of CO2 Catalyzed by Re(I) Complexes Carrying Local Proton Sources
Original language description
The novel rhenium complexes fac-Re(pdbpy)(CO)(3)Cl (pdbpy = 4-phenyl-6-(phenyl-2,6-diol)-2,2'-bipyridine), 1, and fac-Re(ptbpy)(CO)(3)Cl (ptbpy = 4-phenyl-6-(phenyl-3,4,5-triol)-2,2'-bipyridine), 2, have been synthesized, and the single crystal X-ray diffraction (SC-XRD) structure of 1 was solved. The electrochemical behaviors of the complexes in acetonitrile under Ar and their catalytic performances for CO2 reduction with added water and MeOH are discussed. A detailed IR spectroelectrochemical study under Ar and CO2 atmospheres coupled with DFT calculations allows the identification of reduced species and the interpretation of the reduction mechanisms. Comparison between the rhenium complexes and the corresponding Mn derivatives Mn(pdbpy)(CO)(3)Br, 3, and Mn(ptbpy)(CO)(3)Br, 4, has been also considered. Finally, photostimulated conversion of the CO2 was investigated with catalysts (1, 3, and 4) under visible light irradiation (lambda > 420 nm) in acetonitrile as solvent. Remarkably, 1 and 3 catalysts were active toward CO2, producing formate with good selectivity and turnover number (TON). For example, 3 gives 62% selectivity for HCOO- and a TON of 80, and Re compound 1 gives 74% selectivity for HCOO- and a TON of 86.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Project
<a href="/en/project/GA18-09848S" target="_blank" >GA18-09848S: Photoelectrochemical reduction of carbon dioxide on copper foam electrodes modified by copper oxides</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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