Osmium Hexafluoride
Title: Osmium Hexafluoride
CAS Registry Number: 13768-38-2
Molecular Formula: F6Os
Molecular Weight: 304.22
Percent Composition: F 37.47%, Os 62.53%
Line Formula: OsF6
Literature References: Prepd by fluorination of osmium metal: Weinstock, Malm, J. Am. Chem. Soc. 80, 4466 (1958); Hargreaves, Peacock, Proc. Chem. Soc. London 1959, 85. Previously thought to be osmium octafluoride: Ruff, Tschirch, Ber. 46, 929 (1913).
Properties: Pale yellow, volatile solid. Highly poisonous! Very corrosive to skin! mp 32.1°; bp 45.9°. Also reported: mp 33.4°; bp 47.5°, Cady, Hargreaves, J. Chem. Soc. 1961, 1563. Hydrolyzed on exposure to moisture; forms white corrosive fumes which soon turn bluish. May be stored in quartz ampuls.
Melting point: mp 32.1°; mp 33.4°
Boiling point: bp 45.9°; bp 47.5°, Cady, Hargreaves, J. Chem. Soc. 1961, 1563

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