Tuning of Dimensionality and Nuclearity as a Function of Ligand Field Modulation Resulting in Field-Induced Cobalt(II) Single-Ion Magnet
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F23%3A73621969" target="_blank" >RIV/61989592:15310/23:73621969 - isvavai.cz</a>
Result on the web
<a href="https://pubs.acs.org/doi/epdf/10.1021/acs.cgd.2c01255" target="_blank" >https://pubs.acs.org/doi/epdf/10.1021/acs.cgd.2c01255</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acs.cgd.2c01255" target="_blank" >10.1021/acs.cgd.2c01255</a>
Alternative languages
Result language
angličtina
Original language name
Tuning of Dimensionality and Nuclearity as a Function of Ligand Field Modulation Resulting in Field-Induced Cobalt(II) Single-Ion Magnet
Original language description
The present study reveals that predetermined diverse topology and desired properties can be achieved by strategically designing the ligand and it confirms that the structural and magnetic features of cobalt(II) complexes have a significant impact of the ligand modulation and proper utilization of a coligand. In this work, tactically, two new Pyclen-based macrocyclic N4 ligands have been designed to demonstrate the effect of the ligand field on structure and magnetic properties. Using these macrocyclic N4 ligands, a series of cobalt complexes, [Co(L1-N-4)(mu-NCS)](2)middot[Co(NCS)(4)] (1), [Co-4(L1-N4)(2){mu-N(CN)(2)}(8)](n)middot2CH(2)Cl(2) (2), and [Co(L2-N4)(NCS)2] (3), have been synthesized and characterized by different physicochemical techniques, including single crystal X-ray diffraction, magnetic, and various spectroscopic methods. The dinuclear plus mononuclear (2 + 1) cobalt complex (1) and 2D cobalt coordination polymer (2) are synthesized using the same macrocyclic N4 ligand: 3,6,9-trimethyl-3,6,9-triaza-1(2,6)pyridinacyclodecaphane (L1-N4) with a variation of coligand from thiocyanato to dicyananamido. A penta-coordinated mononuclear cobalt complex (3) is synthesized by substituting one methyl group of L1-N4 with a carboxaldehyde group, which leads to a [3,9-dimethyl-3,6,9-triaza-1(2,6)-pyridinacyclodecaphane-6-carbaldehyde (L2-N4)] ligand. Single-crystal X-ray diffraction studies reveal the impact of strategic modification of ligands and variation of coligand on the coordination environment, dimensionality, and topology of Co(II) complexes. Whereas, detailed magnetic studies disclose the occurrence of Co(II) ions in a high-spin electronic state for all three complexes, yet, only complex 3 displays exciting slow relaxation of magnetization using an external dc magnetic field and acts as a single-ion magnet, while complexes 1 and 2 display no such property. Detailed theoretical studies have been carried out to better understand and justify the experimentally obtained result.
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
2023
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
23
Issue of the periodical within the volume
3
Country of publishing house
US - UNITED STATES
Number of pages
12
Pages from-to
"1656–1667"
UT code for WoS article
000927891900001
EID of the result in the Scopus database
2-s2.0-85147223050