Patent ID: 7485659

Claim:
A process of making a composition comprising a mixture of: (i) a compound of the general formula (III): (B′H) 3−n−p−2pr [RuX 6−n−p−q−2r B n (H 2 O) p (OH) q (O) r ] 2r+1 (III) wherein B and B′ are independently a monocyclic or multi-cyclic basic heterocycle chosen from imidazole, pyrazol, triazol, and indazol, X represents a halide, pseudo-halide, HCO 3 − , or RCOO − in which R represents a substituted or unsubstituted C 1 -C 6 -alkyl or C 2 -C 6 -alkenyl or a substituted or unsubstituted aryl, n=1 or 2, r=0, and each of p and q=0 or 1, or r=0.5 and each of p and q=0 or 0.5; and (ii) a compound of the formula (IV): MX′ (IV) wherein M represents an alkali metal cation or ammonia, and X′ represents a halide, pseudo-halide, HCO 3 − , or RCOO − in which R is hydrogen or a substituted or unsubstituted C 1 -C 6 -alkyl or C 2 -C 6 -alkenyl or a substituted or unsubstituted aryl, phosphate, sulphate or acetate, said process comprising: reacting a compound of the formula (I) M 3−n−p−2pr [RuX 6−n−p−q−2r B n (H 2 O) p (OH) q (O) r ] 2r+1 (I) with a compound of the formula (II) B′(HX′) s (II) wherein s is an integer of 1 or more, and M, B, X, B′, X′, n, p, q, and r are as defined above.