Composite cluster-organic frameworks based on polyoxometalates and copper/cobalt–oxygen clusters

Abstract

Two rare mixed-cluster-organic frameworks (CH₃NH₃)₃[Cu₄-(μ₃-O)₂(L^b)₄][MnMo₆O₁₈(L^a)₂]·4NMF·5H₂O (1) and [(CH₃)₂NH₂]₃[Co₅-(μ₃-O)₂(L^b)₆]-[MnMo₆O₁₈(L^a)₂]·5DMF (2) (L^a = 2-(hydroxymethyl)-2-(pyridin-4-yl)-1,3-propanediol; L^b = 4-(2-(4-pyridyl)ethenyl) benzoic acid; NMF = N-methylformamide; DMF = N,N-dimethylformamide) have been obtained, exhibiting the first two porous materials simultaneously integrating polyoxometalates and transition-metal–oxygen clusters as secondary building units (SBUs).