Isolation and Structural Characterization of Er@C-2v(9)-C-82 and Er@C-s(6)-C-82: Regioselective Dimerization of a Pristine Endohedral Metallofullerene Induced by Cage Symmetry

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F19%3A10403724" target="_blank" >RIV/00216208:11310/19:10403724 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=G4p1w-aL2r" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=G4p1w-aL2r</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acs.inorgchem.8b03313" target="_blank" >10.1021/acs.inorgchem.8b03313</a>

Result language
angličtina
Original language name
Isolation and Structural Characterization of Er@C-2v(9)-C-82 and Er@C-s(6)-C-82: Regioselective Dimerization of a Pristine Endohedral Metallofullerene Induced by Cage Symmetry
Original language description
Two Er@C-82 isomers have been isolated and unambiguously characterized as Er@C-2v(9)-C-82 and Er@C-s(6)-C-82, respectively, by single-crystal X-ray diffraction. Er@C-s(6)-C-82 is identified as a dimeric structure in the crystalline state, but dimerization does not occur for Er@C-2v(9)-C-82 under identical crystallization conditions, indicating a cage-symmetry-induced dimerization process. Density functional theory calculations reveal that the major unpaired spin resides on a special C atom of Er@C-s(6)-C-82, which leads to regioselective dimerization. Calculations also found that the dimeric structure of Er@C-s(6)-C-82 center dot Ni(OEP) is much more stable than the two monomers, suggesting a thermodynamically favorable dimerization process. Vis-near-IR spectrometric and electrochemical results demonstrate that the electronic structure of Er@C-82 isomers is Er3+@C-82(3-), instead of the theoretically proposed Er2+@C-82(2-).
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
10403 - Physical chemistry

Project
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Continuities
S - Specificky vyzkum na vysokych skolach<br>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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