Chemistry:Potassium trithiocarbonate

Potassium trithiocarbonate

Identifiers
CAS Number	584-10-1 Y
3D model (JSmol)	Interactive image
ChemSpider	9259726
EC Number	247-959-3
PubChem CID	117858
InChI InChI=1S/CH2O2S.2K/c2-1(3)4;;/h4H,(H,2,3);;/q;2*+1/p-2 Key: JOKZZQQDSRIMNE-UHFFFAOYSA-L
SMILES C(=O)([O-])[S-].[K+].[K+]
Properties
Chemical formula	K 2CS 3
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).
Infobox references

Potassium trithiocarbonate is the inorganic compound with the chemical formula K
2CS
3. 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.

K
2S + CS
2 → K
2CS
3

Potassium trithiocarbonate reacts with alkylating agents to give trithiocarbonate esters:

K
2CS
3 + 2 RX → (RS)
2CS + 2 KX (X = halogen, R = monovalent organyl group)