Californium oxychloride (CfOCl) is a radioactive salt first discovered in measurable quantities in 1960. It is composed of a single californium cation and oxychloride consisting of one chloride and one oxide anion. It was the first californium compound ever isolated.[1]
Treatment of Cf2O3 with moist hydrogen chloride or CfCl3 with water vapor.[2]
The compound form pale green crystals.[3]