Bis(2,4,6-trichlorophenoxymethyl)mercury has been prepared by reaction of bis(bromomethyl)mercury with thallium(I) 2,4,6-trichlorophenoxide. The compound has a centrosymmetric structure with linear CHgC bonding (HgC 2.11(1) Å). Each mercury has contacts with two intramolecular and two intermolecular oxygen atoms (Hg … O 2.970(6) and 3.105(6) Å, respectively) and with an ortho-chlorine from each