Chemical-mechanical polishing composition comprising one or more compounds of formula wherein the pairs of dashed lines in formula either each represent a double bond or each represent a single bond wherein (i) when each pair of dashed lines in formula represents a double bond one of R 1 and R 2 is hydrogen and the other of R 1 and R 2 is selected from the group consisting of chlorine, bromine, alkyl with three to six carbon atoms, benzoyl and -COOR 3 wherein R 3 is selected from the group consisting of alkyls with three to six carbon atoms or R 3 is a substituent comprising a structural unit selected from the group consisting of -(CH 2 -CH 2 -O) n -H and -(CH 2 -CH 2 -O) n -CH 3, wherein n in each case is an integer in the range of from 1 to 15 or R 1 and R 2 are both independently selected from the group consisting of bromine and chlorine and (ii) when each pair of dashed lines in formula represents a single bond R 1 and R 2 are hydrogen or one of R 1 and R 2 is hydrogen and the other of R 1 and R 2 is selected from the group consisting of chlorine, bromine, alkyl with three to six carbon atoms, benzoyl and -COOR 3 wherein R 3 is selected from the group consisting of alkyls with three to six carbon atoms or R 3 is a substituent comprising a structural unit selected from the group consisting of -(CH 2 -CH 2 -O) n -H and -(CH 2 -CH 2 -O) n -CH 3, wherein n in each case is an integer in the range of from 1 to 15 or R 1 and R 2 are both independently selected from the group consisting of bromine and chlorine inorganic particles, organic particles, or a composite or mixture thereof wherein the total amount of cations selected from the group consisting of magnesium and calcium is less than 1 ppm based on the total weight of the respective CMP composition, the total amount of one or more compounds of formula is in a range of from 0.0001 % to 1 wt.% based on the total weight of the respective CMP composition, and the particles are cocoon shaped with a minor axis of from 10 to 200 nm and a ratio of major / minor axis of 1.4 to 2.2. one or more compounds of formula wherein the pairs of dashed lines in formula either each represent a double bond or each represent a single bond wherein (i) when each pair of dashed lines in formula represents a double bond one of R 1 and R 2 is hydrogen and the other of R 1 and R 2 is selected from the group consisting of chlorine, bromine, alkyl with three to six carbon atoms, benzoyl and -COOR 3 wherein R 3 is selected from the group consisting of alkyls with three to six carbon atoms or R 3 is a substituent comprising a structural unit selected from the group consisting of -(CH 2 -CH 2 -O) n -H and -(CH 2 -CH 2 -O) n -CH 3, wherein n in each case is an integer in the range of from 1 to 15 or R 1 and R 2 are both independently selected from the group consisting of bromine and chlorine and (ii) when each pair of dashed lines in formula represents a single bond R 1 and R 2 are hydrogen or one of R 1 and R 2 is hydrogen and the other of R 1 and R 2 is selected from the group consisting of chlorine, bromine, alkyl with three to six carbon atoms, benzoyl and -COOR 3 wherein R 3 is selected from the group consisting of alkyls with three to six carbon atoms or R 3 is a substituent comprising a structural unit selected from the group consisting of -(CH 2 -CH 2 -O) n -H and -(CH 2 -CH 2 -O) n -CH 3, wherein n in each case is an integer in the range of from 1 to 15 or R 1 and R 2 are both independently selected from the group consisting of bromine and chlorine (i) when each pair of dashed lines in formula represents a double bond one of R 1 and R 2 is hydrogen and the other of R 1 and R 2 is selected from the group consisting of chlorine, bromine, alkyl with three to six carbon atoms, benzoyl and -COOR 3 wherein R 3 is selected from the group consisting of alkyls with three to six carbon atoms or R 3 is a substituent comprising a structural unit selected from the group consisting of -(CH 2 -CH 2 -O) n -H and -(CH 2 -CH 2 -O) n -CH 3, wherein n in each case is an integer in the range of from 1 to 15 or R 1 and R 2 are both independently selected from the group consisting of bromine and chlorine and (ii) when each pair of dashed lines in formula represents a single bond R 1 and R 2 are hydrogen or one of R 1 and R 2 is hydrogen and the other of R 1 and R 2 is selected from the group consisting of chlorine, bromine, alkyl with three to six carbon atoms, benzoyl and -COOR 3 wherein R 3 is selected from the group consisting of alkyls with three to six carbon atoms or R 3 is a substituent comprising a structural unit selected from the group consisting of -(CH 2 -CH 2 -O) n -H and -(CH 2 -CH 2 -O) n -CH 3, wherein n in each case is an integer in the range of from 1 to 15 or R 1 and R 2 are both independently selected from the group consisting of bromine and chlorine inorganic particles, organic particles, or a composite or mixture thereof