Publication details
Exchange-versus anisotropy-driven magnetism in phenoxido-bridged Ni(II) and Co(II) dimers
| Authors | |
|---|---|
| Year of publication | 2026 |
| Type | Peer-reviewed scientific article |
| Magazine / Source | INORGANIC CHEMISTRY COMMUNICATIONS |
| MU Faculty or unit | |
| Citation | |
| web | https://www.sciencedirect.com/science/article/pii/S1387700326009172?pes=vor&utm_source=clarivate&getft_integrator=clarivate#ac0005 |
| Doi | https://doi.org/10.1016/j.inoche.2026.117050 |
| Keywords | Schiff base; Phosphine oxide; Cobalt(II); Nickel(II); Crystal structures; Magnetism |
| Attached files | |
| Description | Two phenoxido-bridged dinuclear Ni(II) and Co(II) complexes, [M2(SAIDPPO)2(NO3)2] (M = Ni, Co), have been synthesized using a new Schiff base phosphine oxide ligand (SAIDPPO-). Single-crystal X-ray diffraction revealed closely related Ni2O2 and Co2O2 cores with distinct magnetostructural features. Magnetic studies showed that the Ni(II) complex (1) exhibits ferromagnetic coupling (J = +9.75 cm-1) associated with a near-orthogonal Ni-O-Ni angle (95.50 degrees) and pronounced easy-axis anisotropy (D =-19.44 cm-1). In contrast, the Co(II) analog (2) displays weak antiferromagnetic coupling (J approximate to-4.32 cm-1) combined with significant easy-axis anisotropy (D =-28.45 cm-1) arising from strong spin-orbit coupling. The comparison of the Ni2O2 and Co2O2 cores highlights how subtle structural variations, particularly the M-O-M angle, govern the balance between exchange interactions and magnetic anisotropy. |