Patent ID: 7485729

Claim:
An anhydrous compound of formula VI Zn(X) 2 (Y) 2 (VI) wherein: Zn may be substituted with a metal from the group consisting of aluminum, bismuth and zirconium; Y is an aliphatic carboxylate with an equivalent weight of about 45 to about 465; and X is an amidine of formula VII or VIII: wherein R 14 is hydrogen or C 1 -C 6 alkyl; R 15 is C 1 -C 6 alkyl or an amine optionally substituted with C 1 -C 6 alkyl or phenyl; R 16 and R 17 are hydrogen, C 1 -C 6 alkyl or phenyl; and R 18 , R 19 , R 20 and R 21 are independently hydrogen or C 1 -C 6 alkyl.