(I) [m'(b)z (OPRR'O)m ]n (II) [m(h2 o)a (OH)c (OPRR'O)q . pH2 O]n (III) wherein R and R' may be the same or different and represent alkyl or aryl radicals, M is a metal selected from the group consisting of Co, Mn, Cr, Ni, Zn, Zr, Ti, M' is a member selected from the group consisting of Ti and Zr; B is a member selected from the group consisting of oxo, alkox