A pentanuclear oxovanadium(V) phosphate complex with phenanthroline

A novel crystalline organic-inorganic hybrid oxovanadium(V) phosphate complex, {[V2O4(Phen)2(PO4)]2VO(OH)}3/4 {[V2O4(Phen)2(HPO4)]2}1/4 · 4.5H2O (where Phen = 1,10-phenanthroline), was isolated and characterised structurally using several techniques, among which 51V and 31P solid-state NMR studies proved unequivocally the presence of two coordination environments for the V5+ centres.