Keggin type of polyoxometalate templated assembly of a silver-organic framework with silver-organic cages and helical structures

A new POM-templated metal-organic framework [Ag8L4][PMo12O40]·OH {HL = 5-[4-(1,2,4-triazol-4-yl)phenyl]-1H-tetrazole} containing metal-organic nanocage and left- and right-handed helixes has been isolated under hydrothermal conditions. The Keggin POM plays a template role in the formation of macrocycle and metal-organic nanocage, as shown by X-ray diffraction analysis. The new compound represents a scarce example of POM-encapsulated metal-organic nanocage. Additionally, its photocatalytic degradation of RhB was also investigated.