Patent ID: 7297806

Claim:
A compound of the formula wherein: each X is an anion; n is 1, 2 or 3 so that the total number of negative charges on said anion or anions is equal to the oxidation sate of a Fe atom present in (I); R 1 , R 2 and R 3 are each independently hydrogen, hydrocarbyl, substituted hydrocarbyl, or an inert functional group; R 4 and R 5 are each independently hydrogen, hydrocarbyl, an inert functional group or substituted hydrocarbyl; and R 9 , R 10 , R 11 , R 14 , R 15 and R 16 are each independently hydrogen, hydrocarbyl, an inert functional group or substituted hydrocarbyl; R 8 is a primary carbon group, a secondary carbon group or a tertiary carbon group; and provided that: when R 8 is a primary carbon group none, one or two of R 12 , R 13 and R 17 are primary carbon groups, and the remainder of R 12 , R 13 and R 17 are hydrogen; when R 8 is a secondary carbon group, none or one of R 12 , R 13 and R 17 is a primary carbon group or a secondary carbon group and the remainder of R 12 , R 13 , and R 17 are hydrogen; when R 8 is a tertiary carbon group all of R 12 , Rand R 14 are hydrogen; and any two of R 8 , R 9 , R 10 , R 11 , R 12 , R 13 , R 14 , R 15 , R 16 and R 17 vicinal to one another, taken together may form a ring.