Potassium trioxo­chloro­chromate

Potassium trioxo­chloro­chromate, Potassium chlorochromate , Peligot's salt, or Péligot's salt is a chemical substance named after Eugène-Melchior Péligot. Its formula is KCrO3Cl

Peligot's salt is a salt of chlorochromic acid where chlorine has replaced one of chromic acid's HO groups. It can be said that Peligot's salt is an intermediate form between chromic acid and chromyl chloride.

It is stable in air but in water it can become hydrolysed. When under high temperature, Peligot's salt parts with its chlorine and produces chromic oxide.

Potassium chlorochromate can be prepared from potassium dichromate, hydrochloric acid, and water. The substance may look like long orange-red crystals.

Peligot's salt can oxidise the substance benzyl alcohol, a reaction which can be catalysed by acid.

The structure of Peligot's salt has been redeterminated in 2002.

(18-Crown-6)potassium chloro­chromate
(18-Crown-6)potassium chloro­chromate (1,4,7,10,13,16-hexaoxacyclo­octadecane-k6O)potassium chloro­chromate) or CrClO3 is a crystal structure that contains a K+ cation.