[(CF_3)_2Hg(μ-F)_2Hg(CF_3)_2]~(2-): Synthesis, Structure, and Reactivity

摘要

In the past few years mercura-heterocycles have been successfully used as host molecules for halide ions X~ (X = Cl. Br, I). Previously, the 2:1 adducl of 1,2-phenylenedimercury dichloride and tetraphenylphosphonium chloride, the first an-ionic organomercury derivative, was structurally characterized. Mononuclear organomercury compounds, R ~1HgR~2 also show acceptor properties, which are particularly pronounced for perfluoroalkyl derivatives; Emeleus and Lagowski used conductivity measurements to show that bis(trifluoromethyl)-mercury, the first perfluorinated organometallic compound. undergoes addition of halide ions (X = Cl, Br, I) in aqueous solution to form [(CF_3)_2HgX]~- and [(CF_3)_2HgX_2]~(2-).