A novel [Na6Co6] metallacrown with [24-MC_(Na)-6] periphery encapsulating the [12-MC_(Co)-6] inner core: Synthesis, structure, and magnetic properties

摘要

One novel metallacrown: [Na5Co6(EDBA)6(CH3CH2OH)(CH3CH2O)2][CoCl4]2 (1, EDBA = 2,2'-(((ethane-1,2-diylbis(oxy))bis(ethane-2,1-diyl))bis(oxy))dibenzoic anion), has been synthesized under hydrothermal condition. Compound 1 crystallizes in the cubic system with space group Pa-3, and displays a structure with a [24-MC_(Na)-6] periphery encapsulating the [12-MCco-6] inner core. Magnetic Investigations suggest that weak ferromagnetic coupling exists between adjacent Co~(2+) in 1.