Question

Why carbonate ion is not a chelating ligand ??

Answer 1

Dear student, chelating ligand is the ligand which donates or form coordination bond to central metal ion through more than one atom at the same time .they form a chelating rings forming our complex stable. Carbonate ion donot do so because it have angle of 120° between carbon oxygen bonds.so it becomes difficult for them but in some cases when size of metal is appricablly large it can act as chelating ligand . And also when there two metals in complex it can form bond with both the metal atom at the same time acting as bidentate ligand. Regards.