Local Proton Source in Electrocatalytic CO2 Reduction with [Mn(bpy-R)(CO)(3)Br] Complexes
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F17%3A00473905" target="_blank" >RIV/61388955:_____/17:00473905 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1002/chem.201605546" target="_blank" >http://dx.doi.org/10.1002/chem.201605546</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/chem.201605546" target="_blank" >10.1002/chem.201605546</a>
Alternative languages
Result language
angličtina
Original language name
Local Proton Source in Electrocatalytic CO2 Reduction with [Mn(bpy-R)(CO)(3)Br] Complexes
Original language description
The electrochemical behavior of fac-[Mn(pdbpy)(CO)(3)Br] (pdbpy=4-phenyl-6-(phenyl-2,6-diol)-2,2-bipyridine) (1) in acetonitrile under Ar, and its catalytic performances for CO2 reduction with added water, 2,2,2-trifluoroethanol (TFE), and phenol are discussed in detail. Preparative-scale electrolysis experiments, carried out at -1.5V versus the standard calomel electrode (SCE) in CO2-saturated acetonitrile, reveal that the process selectivity is extremely sensitive to the acid strength, producing CO and formate in different faradaic yields. A detailed spectroelectrochemical (IR and UV/Vis) study under Ar and CO2 atmospheres shows that 1 undergoes fast solvolysis, however, dimer formation in acetonitrile is suppressed, resulting in an atypical reduction mechanism in comparison with other reported Mn-I catalysts. Spectroscopic evidence of Mn hydride formation supports the existence of different electrocatalytic CO2 reduction pathways. Furthermore, a comparative investigation performed on the new fac-[Mn(ptbpy)(CO)(3)Br] (ptbpy=4-phenyl-6-(phenyl-3,4,5-triol)-2,2-bipyridine) catalyst (2), bearing a bipyridyl derivative with OH groups in different positions to those in 1, provides complementary information about the role that the local proton source plays during the electrochemical reduction of CO2.
Czech name
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Czech description
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Classification
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)
Result continuities
Project
<a href="/en/project/GA14-05180S" target="_blank" >GA14-05180S: Electron Transport in Nanoscale Assemblies. From Redox Mechanism to Molecular Conductance.</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Chemistry A European Journal
ISSN
1521-3765
e-ISSN
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Volume of the periodical
23
Issue of the periodical within the volume
20
Country of publishing house
DE - GERMANY
Number of pages
12
Pages from-to
4782-4793
UT code for WoS article
000399327100010
EID of the result in the Scopus database
2-s2.0-85013678071