First hexadecavanadate compound: hydrothermal synthesis and characterization of a three-dimensional framework [{Cu(1,2-pn) 2 } 7 {V 16 O 38 (H 2 O)} 2 ]·4H 2 O

The hydrothermal reaction of V2O5, Cu(CH3COO)2.H2O, 1,2-diaminopropane and [N(CH3)4]OH yields the novel three-dimensional open-framework solid [(Cu(1,2-pn)2)7-(V16O38(H2O))2].4H2O constructed from the new mixed-valence [V16O38(H2O)]7- clusters interconnected through mu 2-[Cu(1,2-pn)2]2+ groups.