Ammonium ammine oxovanadium phosphate, NH4VO(NH3)PO4, crystallizes in the m
onoclinic system in space group P2(1), The structure contains VO4(NH3) squa
re pyramids and PO4 tetrahedra which are connected via common O atoms formi
ng double chains running along [010]. The bond distances are in the usual r
anges and similar to those of other vanadium phosphate compounds.