Insight into the Magnetic Exchange Interactions and Anisotropy in Heterobimetallic CuII-LnIII Complexes: A Rare Example of Cu-Gd Single-Molecule Magnets
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F24%3A73627712" target="_blank" >RIV/61989592:15310/24:73627712 - isvavai.cz</a>
Result on the web
<a href="https://pubs.acs.org/doi/epdf/10.1021/acs.cgd.4c00752" target="_blank" >https://pubs.acs.org/doi/epdf/10.1021/acs.cgd.4c00752</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acs.cgd.4c00752" target="_blank" >10.1021/acs.cgd.4c00752</a>
Alternative languages
Result language
angličtina
Original language name
Insight into the Magnetic Exchange Interactions and Anisotropy in Heterobimetallic CuII-LnIII Complexes: A Rare Example of Cu-Gd Single-Molecule Magnets
Original language description
The exploration of heterometallic complexes containing both 3d and 4f metal ions has been on the rise with advancements in the field of 3d-4f single-molecule magnets. The motivation stemmed from early investigations into the Cu-II-Ln(III) systems, particularly the Cu-II/Gd-III one, that revealed a ferromagnetic interaction between these ions, irrespective of the complex's topology or nuclearity. In this context, we have synthesized three new isostructural and isomorphous [CuLn(L)(NO3)(3)(H2O)] complexes (Ln = Gd (<bold>1</bold>), Tb (2), and Dy (3)) derived from a compartmental Schiff base ligand H2L. All three complexes were structurally characterized in which Cu-II and Ln(III) ions occupy inner N2O2 and outer O2O '(2) compartments of the doubly deprotonated Schiff base ligand, respectively. Moreover, another closely related complex [Cu(L)](2)[CuDy(L)(OAc)(NO3)(H2O)](NO3)<middle dot>5H(2)O (4) has been synthesized starting from the same Schiff base ligand H2L to examine the effect of the coordination environment around the Dy-III ion on the dynamic magnetic behavior in these systems. Variable-temperature direct-current magnetic susceptibility measurements suggest a ferromagnetic exchange interaction between Cu-II and Ln(III) ions, especially in 1-3, which is further supported by DFT calculations. However, alternating-current magnetic susceptibility measurements resulted in the most interesting part of this report. Remarkably, despite the isotropic nature of the Gd-III ion, compound 1 displayed slow relaxation of the magnetization in the presence of an applied field together with its anisotropic counterparts Tb-III (2) and Dy-III (3). Based on the literature study, this is a rare system in which Cu-II-Gd-III complexes showed single-molecule magnet behavior. Moreover, theoretical calculations were also performed by means of DFT and CASSCF levels of theory to obtain precise information on the magnetic exchange coupling between Cu-II and Ln(III) ions together with the distinct magnetic dynamics in these systems.
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
CRYSTAL GROWTH & DESIGN
ISSN
1528-7483
e-ISSN
1528-7505
Volume of the periodical
24
Issue of the periodical within the volume
18
Country of publishing house
US - UNITED STATES
Number of pages
12
Pages from-to
7537-7548
UT code for WoS article
001306527600001
EID of the result in the Scopus database
2-s2.0-85203165865