Patent ID: 7776230

Claim:
A chemical-mechanical polishing system for polishing a substrate comprising: (a) a polishing component selected from an abrasive, a polishing pad, or both an abrasive and a polishing pad, (b) an aqueous carrier, and (c) a halogen adduct resulting from the reaction of (1) an oxidizing agent selected from the group consisting of iodine, bromine, and a combination thereof, and (2) a carbon acid having a pKa of about 3 to about 14, wherein the halogen adduct is present in a concentration of about 0.001 mM or more in the aqueous carrier, and wherein the carbon acid has the following structure: wherein R 1 is selected from the group consisting of OH, R 4 , and OR 4 , wherein R 4 is a substituted or unsubstituted C 1 -C 4 alkyl; R 2 is selected from the group consisting of wherein n is 0 or 1; and R 3 is selected from the group consisting of H, NO 2 , and a substituted or unsubstituted C 1 -C 6 alkyl.