Mercurates from a Revised Ionothermal Synthesis Route: The Pseudo-Flux Approach

K2Hg6Se7, Na2Hg3S2.51Se1.49, K2Hg3S1.03Se2.97, and K2Hg3S2.69Se1.31 were prepared by ionothermal treatment of K2Hg2Se3, Na2HgSe2, and K2Hg3Se4, respectively, in a nonclassical hydrosulfide ionic liquid (EMIm)­(SH). In contrast to their lighter congeners, the title compounds could so far not be synthesized by inorganic polychalcogenide salt flux techniques. The applied method hence mimics polychalcogenide flux conditions, while operating at much lower temperatures below the decomposition temperature of the ionic liquid. It might thus be viewed as a pseudo-flux approach.K₂Hg₆Se₇、Na₂Hg₃S₂.₅₁Se₁.₄₉、K₂Hg₃S₁.₀₃Se₂.₉₇ 与 K₂Hg₃S₂.₆₉Se₁.₃₁ 分别以 K₂Hg₂Se₃、Na₂HgSe₂ 及 K₂Hg₃Se₄ 为原料，在非经典氢硫化物离子液体（nonclassical hydrosulfide ionic liquid）(EMIm)(SH) 中经离子热法（ionothermal treatment）制备得到。与对应较轻同系物不同，上述标题化合物迄今尚未能通过无机多硫族化物盐熔剂法（polychalcogenide salt flux techniques）合成。该制备方法虽模拟了多硫族化物熔剂的反应条件，却可在远低于该离子液体分解温度的低温下开展，故而可被视为一种伪熔剂法（pseudo-flux approach）。