Morpholinium intercalated vanadophosphates

The present paper reports the formation of two morpholinium (Morp) incorporated solids precipitated from aqueous vanadate solution acidifed with phosphoric acid: a zero-dimensional, mixed-valent phosphovanadate cluster containing solid, [Morp]6[PVO4 subset of VIV 3VV 11O32(OH)6].2H2O, 1 and a two-dimensional layered solid, [Morp]0,23[VIV,VOPO4]1,1H2O, 2,0 While 2 precipitates out from the reaction mixture in the presence of a reducing agent hydrazine hydrate, 1 crystallises out in its absence.