Patent ID: 7652158

Claim:
A process for producing an n-valent metal ion compound comprising: combining an n-valent metal organo-oxide M-(OR 1 ) n with a dione under reaction conditions in an alcohol solvent to yield a reaction product where R 1 in each occurrence independently is a C 1 -C 8 alkyl, C 6 -C 12 cycloalkyl, or C 6 -C 14 aryl; R 2 in each occurrence independently is H, C 1 -C 8 alkyl, C 6 -C 12 cycloalkyl, or C 6 -C 14 aryl; M is a trivalent main group or lanthanide metal ion of Al, Ga, In, Tl, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Zr, or Lu, and n is 3 with the proviso that when M is Zr n is 4; and collecting dry the reaction product II as a filtered precipitate from the alcohol solvent.