Superb Alkali-Resistant DyNi Single-Molecule Magnet.

A superb alkali-resistant single-molecule-magnet (SMM) material with the molecular formula [DyNi(L)(CHCOO)(NO)] () (HL = 8-hydroxyquinoline) has been structurally and magnetically characterized. Single-crystal X-ray diffraction revealed that possesses a hexanuclear [DyNi] cluster, which is built by two triangular [DyNi] cores double-bridged through two CHCOO ions. Interestingly, can keep its original structure in dilute acid and common basic solutions (e.g., triethylamine and NaOH). More importantly, is still stable after treatment with a 20 M NaOH aqueous solution for 1 month at room temperature. Magnetic measurements uncovered that is an SMM under zero applied field with = 7.43 K. To the best of our knowledge, is the first example of a 3d-4f SMM with such extreme alkali resistance. This work will broaden the vision of preparing SMM materials with excellent chemical stability.