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用倍半稀土硫化物及六方晶系硫化汞在高于硫化汞的升华温度下合成了三个新稀土汞复合硫化物,经化学分析确定分子式为Ln_4HgS_7(Ln=Tm,Yb和Lu).该系列化合物属四方晶系.本文给出X射线粉末衍射数据及化合物的晶胞参数,用热重法研究了这些化合物在空气中的热稳定性.
Three new rare earth mercury complexes sulfides were synthesized at higher temperature than that of mercuric sulfide by using sesqui-Rare Earth Sulfides and hexagonal Mercuric Sulfide. The chemical formula was confirmed to be Ln_4HgS_7 (Ln = Tm, Yb and Lu) Series of compounds belong to the tetragonal system.The X-ray powder diffraction data and the unit cell parameters of the compounds are given in this paper.The thermal stability of these compounds in air is investigated by thermogravimetry.