Insight into ferromagnetic interactions in CuII-LnIII dimers with a compartmental ligand
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F24%3A73627678" target="_blank" >RIV/61989592:15310/24:73627678 - isvavai.cz</a>
Result on the web
<a href="https://pubs.rsc.org/en/content/articlelanding/2024/dt/d3dt03557c" target="_blank" >https://pubs.rsc.org/en/content/articlelanding/2024/dt/d3dt03557c</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/d3dt03557c" target="_blank" >10.1039/d3dt03557c</a>
Alternative languages
Result language
angličtina
Original language name
Insight into ferromagnetic interactions in CuII-LnIII dimers with a compartmental ligand
Original language description
In the last two decades, efforts have been devoted to obtaining insight into the magnetic interactions between Cu-II and Ln(III) utilizing experimental and theoretical means. Experimentally, it has been observed that the exchange coupling (J) in Cu-II-Ln(III) systems is often found to be ferromagnetic for >= 4f(7) metal ions. However, exchange interactions at sub-Kelvin temperatures between Cu-II and the anisotropic/isotropic Ln(III) ions are not often explored. In this report, we have synthesized a series of heterobimetallic [CuLn(HL)(mu-piv)(piv)(2)] complexes (Ln(III) = Gd (1), Tb (2), Dy (3) and Er (4)) from a new compartmental Schiff base ligand, N,N'-bis(3-methoxy-5-methylsalicylidene)-1,3-diamino-2-propanol (H3L). X-ray crystallographic analysis reveals that all four complexes are isostructural and isomorphous. Magnetic susceptibility measurements reveal a ferromagnetic coupling between the Cu-II ion and its respective Ln(III) ion for all the complexes, as often observed. Moreover, mu-SQUID studies, at sub-Kelvin temperatures, show S-shaped hysteresis loops indicating the presence of antiferromagnetic coupling in complexes 1-3. The antiferromagnetic interaction is explained by considering the shortest Cu & ctdot;Cu distance in the crystal structure. The nearly closed loops for 1-3 highlight their fast relaxation characteristics, while the opened loops for 4 might arise from intermolecular ordering. CASSCF calculations allow the quantitative assessment of the interactions, which are further supported by BS-DFT calculations.
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
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
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
53
Issue of the periodical within the volume
6
Country of publishing house
GB - UNITED KINGDOM
Number of pages
11
Pages from-to
2501-2511
UT code for WoS article
001141023000001
EID of the result in the Scopus database
2-s2.0-85182388243