694. Antimony Dichlorotrifluoride

Nomenclature

CAS number: 7791-16-4
Antimony chloride fluoride; antimony dichlorofluoride; antimony trifluorodichloride.
Cl2F3Sb; mol wt 249.66.
Cl 28.40%, F 22.83%, Sb 48.77%.
SbCl2F3.

Description and references

Prepd according to the exothermic reaction SbF3 + Cl2 → SbCl2F3: Henne, Org. React. 2, 61 (1944); Kwasnik in Handbook of Preparative Inorganic Chemistry Vol. 1, G. Brauer, Ed. (Academic Press, New York, 2nd ed., 1963) pp 200-201. Prepd from SbCl5 and ClF3: Dehnicke, Weidlein, Z. Anorg. Allg. Chem. 323, 267 (1963).

Properties

Viscous liquid. Can be stored in iron vessels.

Caution

Highly toxic.

Use

As catalyst in the manufacture of organic fluorine compds: Slesser, Schram, Preparation, Properties, and Technology of Fluorine and Organic Fluoro Compounds (New York, 1951) passim.