Polyoxometalate-directing calix[4]resorcinarene-based giant [Co₈] coordination cage: Self-assembly and electrochemical performance

Polyoxometalate(POM) -based supramolecular coordination cages have aroused wide interest in terms of their design and fabrication, however, it still be challenging. Herein, we report a POM-calixarene-based giant [Co-8] coordination cage, [Co-8(MTR4A)(6)Cl-8](alpha-SiW12O40) (2)center dot 30DMF center dot 74EtOH (cage-1), assembled with six bowl-shaped calix [4]resorcinarene(MTR4A) molecules, eight Co.. cations, two alpha -SiW12O404- counter anions, and eight Cl- anions. Remarkably,alpha-SiW12O404- anions were sandwiched between layers via hydrogen-bonded to form a 3D supramolecular architecture. Moreover, cage-1 showed a good lithium-ion storage capacity as an anode material in lithium-ion batteries (LIBs). Furthermore, it was shown to be a highly active bifunctional electrocatalytic performance for reducing nitrite (NO2-) and oxidizing ascorbic acid (AA). CCDC: 2248724.