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Updated: Jan 5, 2026
16:11
Thermochemical Studies of NiII and ZnII Ternary Complexes Using Ion Mobility-Mass Spectrometry
Published on: June 8, 2022
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Synthesis, Magnetic and High-Field EPR Investigation of Two Tetranuclear NiII-Based Complexes
Lívia B L Escobar1,2, Guilherme P Guedes1, Stéphane Soriano3
1Instituto de Química , Universidade Federal Fluminense , Niterói , Rio de Janeiro 24020-141 , Brazil.
Inorganic Chemistry
|October 19, 2019
Summary
Two new nickel compounds with cubane-like structures were synthesized. Both exhibit ferromagnetic interactions, resulting in a ground-state spin of S = 4, confirmed by magnetic studies.
Area of Science:
- Inorganic Chemistry
- Materials Science
- Magnetochemistry
Background:
- Nickel(II) complexes with beta-diketonate ligands are of interest for their magnetic properties.
- Cubane-like structures in polynuclear metal complexes can lead to unique magnetic behaviors.
Purpose of the Study:
- To synthesize and characterize novel tetranuclear nickel compounds.
- To investigate the magnetic properties and electronic structures of these compounds.
Main Methods:
- One-pot synthesis of tetranuclear nickel compounds using beta-diketonate ligands.
- Single-crystal X-ray diffraction for structural determination.
- SQUID magnetometry and high-field electron paramagnetic resonance (HFEPR) spectroscopy for magnetic property analysis.
Main Results:
- Two tetranuclear nickel compounds with cubane-like structures were successfully synthesized.
- Compound 1 exhibits dominant ferromagnetic Ni-Ni interactions, leading to an S=4 ground state.
- Compound 2 shows a combination of antiferromagnetic and ferromagnetic interactions, with ferromagnetism dominating to yield an S=4 ground state.
Conclusions:
- The synthesized compounds demonstrate tunable magnetic properties based on the ligand environment.
- Ferromagnetic interactions are key to achieving high-spin ground states in these nickel cubane complexes.
- The results align with structural and spectroscopic data, providing insights into metal-metal interactions in polynuclear systems.
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