Synthesis of a New Sulfosalt, KHgSbS₃

Abstract

A new sulfide crystal, KHgSbS₃, was synthesized by hydrothermal heating of the powder mixture of Sb₂S₃ and HgS in the solution of KOH/K₂S(=1/5) at 180°C for 50 h in a Pyrex glass tube. The single rystal has tabular shape and the color is reddish orange. It belongs to monoclinic structure and space group is A 2/a or Aa. The lattice parameters determined from four-circle diffractometer are a = 17.0 84(8)Å, b=8.647(4)Å, c =8.951(3)Å, β=105.78(5)°. The indexed X-ray powder diffraction data were obtained from GuinierHägg camera method; the five strongest lines are [d(1)(hk1)]: [3.391(80)(320)], [3.112(100)(122)] [3.0 59(100 b)(222)]1, [2.2 38(90)(204)] [2.144(80)(140)].