Designed Construction of Cluster Organic Frameworks from Lindqvist-type Polyoxovanadate Cluster

Two unprecedented examples of cluster organic frameworks (TBA)₃Cu[V₆O₁₃(L)₂]₂·4DEF (2) (TBA)Ag[V₆O₁₃(L)₂] solvent (3) (TBA = tetrabutylammonium, H₃L = tris(hydroxymethyl)-4-picoline, DEF = N, N'-diethylformamide) based on Lindqvist-type polyoxometalate (POM) secondary building units (SBUs) have been constructed successfully. Compounds 2 and 3 are the second cases of cluster organic frameworks based on Lindqvist-type POM cluster SBUs. Furthermore, the cluster organic framework of 2 exhibits efficient electrocatalytic activity and strong durability in oxygen reduction reaction.