Abstract : Polyoxometalates A series of mixed‐valence Mn6 ‐sandwiched polyoxometalates (POMs) with SMM behavior have been hydrothermally made, in which the covalently functionalized Mn6 cluster via organic ligands are first observed in POMs. For more details, see the Full Paper by J.‐W. Zhao, G.‐Y. Yang, H.‐S. Liu et al. onpage 12322 ff.