Iodine Pentafluoride
Title: Iodine Pentafluoride
CAS Registry Number: 7783-66-6
Molecular Formula: F5I
Molecular Weight: 221.90
Percent Composition: F 42.81%, I 57.19%
Line Formula: IF5
Literature 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. 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.
Melting point: mp 9.43°
Boiling point: bp 100.5°
Density: d25 3.19
Use: Mild fluorinating agent.

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