The one acetate group that remains on mercury can be displaced by chloride::C6H5OH + Hg(OAc)2 → C6H4(OH)-2-HgOAc + HOAc:C6H4(OH)-2-HgOAc + NaCl → C6H4(OH)-2-HgCl + NaOAcThe Hg2+ center binds to alkenes, inducing the addition of hydroxide and alkoxide.