A combined experimental and theoretical study on a single, unsupported oxo-bridged Mn(iii,iii) dimer coordinated to two iminobenzosemiquinone π-radical anions
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388963%3A_____%2F21%3A00543394" target="_blank" >RIV/61388963:_____/21:00543394 - isvavai.cz</a>
Alternative codes found
RIV/61989592:15640/21:73611124
Result on the web
<a href="https://doi.org/10.1039/D1DT00489A" target="_blank" >https://doi.org/10.1039/D1DT00489A</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/d1dt00489a" target="_blank" >10.1039/d1dt00489a</a>
Alternative languages
Result language
angličtina
Original language name
A combined experimental and theoretical study on a single, unsupported oxo-bridged Mn(iii,iii) dimer coordinated to two iminobenzosemiquinone π-radical anions
Original language description
Ligand H2LAP comprises a non-innocent 2-aminophenol unit and an innocent bis(pyridin-2-ylmethyl)amine unit. The ligand, upon reaction with an equivalent amount of Mn(ClO4)2·6H2O in the presence of Et3N under air in MeOH, provided a mono(oxo)-bridged dinuclear Mn2 complex ({[(LISQ)MnIII–O–MnIII(LISQ)][(ClO4)]2}, 1). X-ray crystal structure analysis of complex 1 revealed that in the dicationic unit, the physical oxidation state of each Mn ion was +III and the 2-aminophenol unit of ligand H2LAP was in its one-electron oxidized iminobenzosemiquinone form. 1H-NMR measurement of complex 1 confirmed that the complex acquired a diamagnetic ground state (St = 0). Thus, antiferromagnetic couplings among the paramagnetic centers were realized. The UV-Vis-NIR spectrum of complex 1 was consisted of ligand-to-metal charge-transfer transitions in the visible region, while ligand-to-metal and metal-to-ligand charge-transfer transitions were noticed in the near-infrared region due to the presence of iminobenzosemiquinone radical units. The cyclic voltammogram of the complex showed three one-electron oxidation waves and two one-electron reduction waves. While the first two oxidation processes were metal-based, the two successive reductions were ligand-centered. DFT-based theoretical studies confirmed the assignment.
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
10403 - Physical chemistry
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Dalton Transactions
ISSN
1477-9226
e-ISSN
1477-9234
Volume of the periodical
50
Issue of the periodical within the volume
25
Country of publishing house
GB - UNITED KINGDOM
Number of pages
8
Pages from-to
8768-8775
UT code for WoS article
000657790000001
EID of the result in the Scopus database
2-s2.0-85108868156