A new polyoxometalate-based helical compound with entanglement nodes: Structure, electrocatalytic and photocatalytic properties

Abstract A new helical compound based on polyoxovanadates, [Ni(H 2 O) 2 V 2 O 6 ] ( 1 ), has been synthesized under the hydrothermal condition. Single-crystal X-ray diffraction analysis reveals that compound 1 possesses a pair of entanglement double helixes in an inorganic framework with (8 1 12 4 16 1 ) (8 2 12 2 16 2 ) topology. There are two kinds of approximately elliptical helical channels in inorganic framework. Furthermore, the electrocatalytic and photocatalytic properties of compound 1 were investigated in details.