EPR Spectroscopic Detection of the Elusive Fe V ═O Intermediates in Selective Catalytic Oxofunctionalizations of Hydrocarbons Mediated by Biomimetic Ferric Complexes Full article
| Journal |
ACS Catalysis
ISSN: 2155-5435 |
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| Output data | Year: 2015, Volume: 5, Number: 5, Pages: 2702-2707 Pages count : 6 DOI: 10.1021/acscatal.5b00169 | ||||||
| Tags | bioinspired catalysis, enantioselective epoxidation, EPR, iron, mechanism | ||||||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Russian Science Foundation | 14-13-00158 |
Abstract:
Herein, we report the EPR spectroscopic study of the bioinspired catalyst systems for selective hydrocarbon oxofunctionalizations based on dinuclear ferric complexes with TPA* and PDP* aminopyridine ligands , hydrogen peroxide and acetic acid (TPA* = tris(3,5-dimethyl-4-methoxypyridyl-2-methyl)amine, PDP* = bis(3,5-dimethyl-4-methoxypyridylmethyl)-(S,S)-2,2'-bipyrrolidine). Using very low temperatures −75 to −85 °C, the extremely unstable and reactive iron-oxygen intermediates, directly reacting with olefins even at −85 °C have been detected for the first time. Their EPR parameters (g1 = 2.070-2.071, g2 = 2.005-2.008, g3 = 1.956-1.960) were very similar to those of the known oxoiron(V) complex [(TMC)FeV=O(NC(O)CH3)]+ (g1 = 2.053, g2 = 2.010, g3 = 1.971, TMC = 1,4,8,11-tetramethyl-1,4,8,11-tetraazacyclotetradecane). On the basis of EPR and reactivity data, the detected intermediates were assigned to the FeV=O active oxidizing species of the catalyst systems studied.
Cite:
Lyakin O.Y.
, Zima A.M.
, Samsonenko D.G.
, Bryliakov K.P.
, Talzi E.P.
EPR Spectroscopic Detection of the Elusive Fe V ═O Intermediates in Selective Catalytic Oxofunctionalizations of Hydrocarbons Mediated by Biomimetic Ferric Complexes
ACS Catalysis. 2015.
V.5. N5. P.2702-2707. DOI: 10.1021/acscatal.5b00169
WOS
Scopus
РИНЦ
ANCAN
OpenAlex
EPR Spectroscopic Detection of the Elusive Fe V ═O Intermediates in Selective Catalytic Oxofunctionalizations of Hydrocarbons Mediated by Biomimetic Ferric Complexes
ACS Catalysis. 2015.
V.5. N5. P.2702-2707. DOI: 10.1021/acscatal.5b00169
WOS
Scopus
РИНЦ
ANCAN
OpenAlex
Files:
Full text from publisher
Dates:
| Submitted: | Jan 27, 2015 |
| Published online: | Mar 26, 2015 |
| Published print: | May 1, 2015 |
Identifiers:
| Web of science: | WOS:000354012200002 |
| Scopus: | 2-s2.0-84929457621 |
| Elibrary: | 24033066 |
| Chemical Abstracts: | 2015:510512 |
| Chemical Abstracts (print): | 162:514072 |
| OpenAlex: | W2079255657 |