Potassium hydrosulfide explained

Potassium hydrosulfide is an inorganic compound with the formula KSH. This colourless salt consists of the cation and the bisulfide anion . It is the product of the half-neutralization of hydrogen sulfide with potassium hydroxide. The compound is used in the synthesis of some organosulfur compounds.[1] Aqueous solutions of potassium sulfide consist of a mixture of potassium hydrosulfide and potassium hydroxide.

The structure of the potassium hydrosulfide resembles that of potassium chloride. Their structure is however complicated by the non-spherical symmetry of the anions, but these tumble rapidly in the solid.[2]

The addition of sulfur gives dipotassium pentasulfide.

Synthesis

It is prepared by neutralizing aqueous KOH with .[3]

Notes and References

  1. Encyclopedia: Dittmer, Donald C.. Potassium Hydrogen Sulfide . Encyclopedia of Reagents for Organic Synthesis . Paquette, L. . J. Wiley & Sons, New York . 2001 . 10.1002/047084289X.rp227. 0471936235 .
  2. Haarmann, F . Jacobs, H. . Roessler, E. . Senker, J. . Dynamics of Anions and Cations in Hydrogensulfides of Alkali Metals (NaHS, KHS, RbHS): A Proton Nuclear Magnetic Resonance Study . Journal of Chemical Physics . 2002 . 117 . 3 . 1269–1276 . 10.1063/1.1483860. 2002JChPh.117.1269H . free .
  3. 10.15227/orgsyn.028.0016. Benzoyl Disulfide . Robert L. Frank and James R. Blegen. Organic Syntheses . 1948 . 28 . 16 .