Informace o publikaci
A Series of Solution-Stable Heterometallic Molecular Phosphonates with {Co9Dy}, {Co7Dy}, and {Co6Dy} Cores
| Autoři | |
|---|---|
| Rok publikování | 2026 |
| Druh | Recenzovaný odborný článek |
| Časopis / Zdroj | INORGANIC CHEMISTRY |
| Fakulta / Pracoviště MU | |
| Citace | |
| www | https://pubs.acs.org/doi/10.1021/acs.inorgchem.6c01194?src=getftr&utm_source=clarivate&getft_integrator=clarivate |
| Doi | https://doi.org/10.1021/acs.inorgchem.6c01194 |
| Klíčová slova | Binary alloys; Chlorine compounds; Cobalt alloys; Cobalt compounds; Dysprosium alloys; Dysprosium compounds; Ising model; Sodium alloys; Sodium Carbonate; Synthesis (chemical) |
| Přiložené soubory | |
| Popis | A family of three heterometallic molecular phosphonate clusters with {CoxDy} (x = 6, 7, 9) cores was synthesized using the Schiff-base-derived phosphonate ligand HSAA(2-). The reactions of CoCl2 & centerdot;6H(2)O and DyCl3 & centerdot;6H(2)O with HSAA(2-) under various conditions afforded the polynuclear complexes [Co9Dy(SAA)(6)Cl-3] (1), [Na2Co7Dy(SAA)(6)(SA)] (2), and [Na3Co6Dy(SAA)(6)] (3), which are based on a common {Co6Dy} phosphonate core further stabilized by additional cobalt or sodium cations. The complexes were found to be thermally stable up to 250 degrees C, soluble, and stable in polar aprotic solvents. Direct current (dc) magnetic susceptibility measurements recorded over the temperature range 2-300 K were interpreted using an effective-spin model. The analysis revealed an isotropic Co2+ contribution and a strong axial Dy3+ response consistent with Ising-type magnetic behavior. Despite the presence of strongly anisotropic Dy3+ centers, alternating current (ac) magnetic measurements revealed negligible slow relaxation of magnetization, even under an external magnetic field. |