Cobalt(II) and Nickel(II) Cubane {M4O4} Complexes Derived from Di-2-pyridyl Ketone and Benzoate: Syntheses, Structure and Magnetic Properties
Two tetranuclear complexes were obtained by a self-assembly process employing di-2-pyridyl ketone ((py)2CO), benzoate and M(NO3)2 (M = Co and Ni). The compounds [M4{(py)2C(OH)O}4(O2CPh)4], where {(py)2C(OH)O}− is the monoanion of the gem-diol form of (py)2CO, were characterized through single-crystal X-ray diffraction and magnetic measurements. Structural analysis revealed that both complexes possess a [M4O4] cubane-like core. A two-J model and magnetic anisotropy were employed to analyze the magnetic properties of both compounds. These studies indicate the presence of dominant ferromagnetic interactions within both tetranuclear cores. DFT and CASSCF/NEVPT2 calculations were also performed to support the fitting of experimental magnetic data.
Authors
- Carolina Pejo
- Maria G. F. Vaz (ORCID: https://orcid.org/0000-0001-9855-5909)
- Ricardo González (ORCID: https://orcid.org/0000-0002-6410-6555)
- Miguel A. Novak (ORCID: https://orcid.org/0000-0002-5224-3616)
- Carlos Rojas‐Dotti (ORCID: https://orcid.org/0000-0002-5810-2320)
- Guilherme P. Guedes (ORCID: https://orcid.org/0000-0001-6138-9943)
- Joan Cano (ORCID: https://orcid.org/0000-0002-7382-7135)
- Raúl Chiozzone (ORCID: https://orcid.org/0000-0003-1458-6615)
- Santiago Valiero
Institutions
- Universidade Federal Fluminense (BR)
- Universidad de la República de Uruguay (UY)
- Parc Científic de la Universitat de València (ES)
Publication Details
- Journal
- Magnetochemistry
- Published
- 2025-04-15
- DOI
- https://doi.org/10.3390/magnetochemistry11040034
- Citations
- 1
- Primary Topic
- Magnetism in coordination complexes
- Type
- article
- Field-Weighted Citation Impact
- 0.43
Funders
- Agencia Nacional de Investigación e Innovación
- Conselho Nacional de Desenvolvimento Científico e Tecnológico
- Universidade Federal de Minas Gerais
- Comisión Sectorial de Investigación Científica