5018. Iodine Pentafluoride

Nomenclature

CAS number: 7783-66-6
F5I; mol wt 221.90.
F 42.81%, I 57.19%.
IF5.

Description and references

Prepd by passing fluorine over iodine with cooling: Gore, Philos. Mag. [4] 41, 309 (1871); Moissan, Compt. Rend. 135, 563 (1902); Bull. Soc. Chim. Fr. [3] 29, 6 (1903); Ruff, Keim, Z. Anorg. Allg. Chem. 201, 245 (1931); Ruff, Braida, ibid. 220, 43 (1934); Kwasnik in Handbook of Preparative Inorganic Chemistry vol. 1, G. Brauer, Ed. (Academic Press, New York, 2nd ed., 1963) pp 159-160. Reviews: Kemmitt, Sharp, Adv. Fluorine Chem. 4, 247-248 (1965); Stein, “Physical and Chemical Properties of Halogen Fluorides” in Halogen Chemistry Vol. 1, V. Gutmann, Ed. (Academic Press, New York, 1967) pp 133-224; Meinert, Z. Chem. 7, 41-57 (1967).

Properties

Liquid. mp 9.43°. bp 100.5°. d25 3.19. Oxidizer, poisonous, corrosive. Thermodynamic data: Osborne et al., J. Chem. Phys. 54, 3790 (1971). Fumes in air! Attacks glass, especially when hot. Violent reaction with water. Organic compds carbonize on contact, sometimes with conflagration. Instant reaction with S, P, Si, Bi, W, As, usually with incandescence.

Use

Mild fluorinating agent.