A novel [Na6Co6] metallacrown with [24-MCNa-6] periphery encapsulating the [12-MCCo-6] inner core: Synthesis, structure, and magnetic properties

One novel metallacrown: [Na6Co6(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-MCNa-6] periphery encapsulating the [12-MCCo-6] inner core. Magnetic investigations suggest that weak ferromagnetic coupling exists between adjacent Co2 + in 1.