Schiff base ligands derived from triketones form stable complexes with
VO. In the mononuclear vanadyl complex of ,3-propandiyldiamino)bis(1-
phenyl-1,3-hexanedione, vanadium is five-coordinate, equatorially bond
ed to four carbonyl O atoms in a nearly square-planar arrangement and
axially to one other O atom. N atoms are not involved in complex forma
tion. The hydroxy group is disordered.