Potassium trithiocarbonate

Potassium trithiocarbonate is the inorganic compound with the chemical formula K2CS3. It is the potassium salt of trithiocarbonic acid. It consists of two potassium cations K+ and the trigonal planar trithiocarbonate dianion CS2−3. It is a white solid, although impure samples often appear brown. It is prepared by the reaction of potassium sulfide or potassium hydrosulfide with carbon disulfide.

Potassium trithiocarbonate
Identifiers
3D model (JSmol)
ECHA InfoCard 100.008.667 Edit this at Wikidata
EC Number
  • 247-959-3
  • InChI=1S/CH2O2S.2K/c2-1(3)4;;/h4H,(H,2,3);;/q;2*+1/p-2
    Key: JOKZZQQDSRIMNE-UHFFFAOYSA-L
  • C(=O)([O-])[S-].[K+].[K+]
Properties
K2CS3
Molar mass 186.39 g·mol−1
Appearance White solid, often brown due to impurities
Related compounds
Related compounds
Trithiocarbonic acid
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
K2S + CS2 → K2CS3

Potassium trithiocarbonate reacts with alkylating agents to give trithiocarbonate esters:[1]

K2CS3 + 2 RX → (RS)2CS + 2 KX (X = halogen, R = monovalent organyl group)

References

edit
  1. ^ R. E. Strube (1959). "Trithiocarbodiglycolic Acid". Organic Syntheses. 39: 77. doi:10.15227/orgsyn.039.0077.