A multifunctional magnetic material based on a solid solution of Fe(II)/Co(II) complexes with a macrocyclic cyclam-based ligand
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F21%3A73609438" target="_blank" >RIV/61989592:15310/21:73609438 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11310/21:10438708
Result on the web
<a href="https://pubs.rsc.org/en/content/articlelanding/2021/DT/D1DT01534F" target="_blank" >https://pubs.rsc.org/en/content/articlelanding/2021/DT/D1DT01534F</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/d1dt01534f" target="_blank" >10.1039/d1dt01534f</a>
Alternative languages
Result language
angličtina
Original language name
A multifunctional magnetic material based on a solid solution of Fe(II)/Co(II) complexes with a macrocyclic cyclam-based ligand
Original language description
In order to prepare a multifunctional magnetic material combining spin crossover together with single-molecular magnetism, co-crystallization of Fe(ii) and Co(ii) complexes of the pyridine derivative of cyclam (Py-2-C = 1,8-bis(pyridin-2-ylmethyl)-1,4,8,11-tetraazacyclotetradecane) was performed. Complexes with the general formula [M-II(Py-2-C)](ClO4)(2)center dot H2O (M-II = Fe (1), Co (2) or Fe0.4Co0.6 (3)) were prepared and thoroughly characterized. Based on X-ray molecular structures, they formed octahedral complexes with cis-arrangement of the coordinated pyridine moieties. Magnetic data revealed that the Fe(ii) complex 1 shows complete SCO with the transition temperature T-1/2 = 141 K, which is preserved also in the mixed Fe/Co system 3 (T-1/2 = 128 K). Co(ii) complex 2 behaves as a field-induced single-molecule magnet as well as the mixed system 3 with a direct and phonon bottleneck relaxation process, respectively. This is the first example of such Fe/Co solid solution providing SCO in combination with field-induced SMM properties. Unfortunately, the light-induced excited spin-state trapping (LIESST) effect was not observed either for the Fe(ii) complex 1 or the mixed system 3 and thus, the effect of SCO on SMM properties at low temperature could not be investigated in detail. Nevertheless, the obtained results clearly document the success of the solid solution methodology for the preparation of multifunctional magnetic materials.
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
10402 - Inorganic and nuclear chemistry
Result continuities
Project
<a href="/en/project/GA17-08992S" target="_blank" >GA17-08992S: Magnetically multifunctional molecular materials</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
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
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Volume of the periodical
50
Issue of the periodical within the volume
32
Country of publishing house
GB - UNITED KINGDOM
Number of pages
11
Pages from-to
11147-11157
UT code for WoS article
000678900100001
EID of the result in the Scopus database
2-s2.0-85113784706