Redox-induced spin-state switching and mixed valency in quinonoid-bridged dicobalt complexes

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F14%3A00428492" target="_blank" >RIV/61388955:_____/14:00428492 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1002/chem.201302858" target="_blank" >http://dx.doi.org/10.1002/chem.201302858</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/chem.201302858" target="_blank" >10.1002/chem.201302858</a>

Result language
angličtina
Original language name
Redox-induced spin-state switching and mixed valency in quinonoid-bridged dicobalt complexes
Original language description
The complexes [{(tmpa)Co(II) }2 (mu-L(1) )(2-) ](2+) (1(2+) ) and [{(tmpa)Co(II) }2 (mu-L(2) )(2-) ](2+) (2(2+) ), with tmpa=tris(2-pyridylmethyl)amine, H2 L(1) =2,5-di-[2-(methoxy)-anilino]-1,4-benzoquinone, and H2 L(2) =2,5-di-[2-(trifluoromethyl)-anilino]-1,4-benzoquinone, were synthesized and characterized. Structural analysis of 2(2+) revealed a distorted octahedral coordination around the cobalt centers, and cobalt-ligand bond lengths that match with high-spin Co(II) centers. Superconducting quantum interference device (SQUID) magnetometric studies on 1(2+) and 2(2+) are consistent with the presence of two weakly exchange-coupled high-spin cobalt(II) ions, for which the nature of the coupling appears to depend on the substituents on the bridgingligand, being antiferromagnetic for 1(2+) and ferromagnetic for 2(2+) . Both complexes exhibit several one-electron redox steps, and these were investigated with cyclic voltammetry and UV/Vis/near-IR spectroelectrochemistry. For 1(2+) , i
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CF - Physical chemistry and theoretical chemistry
OECD FORD branch
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Project
<a href="/en/project/GA203%2F09%2F0705" target="_blank" >GA203/09/0705: Transfer of charge in single and assembled molecules</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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