Rhenium heptafluoride is the compound with the formula ReF7. It is a yellow low melting solid and is the only thermally stable metal heptafluoride.[2] It has a distorted
pentagonal bipyramidal structure similar to
IF7, which was confirmed by neutron diffraction at 1.5 K.[3] The structure is non-rigid, as evidenced by electron diffraction studies.[4]
Production, reactions and properties
Rhenium heptafluoride can be prepared from the elements at 400 °C:[5]
^
abcdJ.G.Malm; H.Selig (1961). "The vapour-pressures and other properties of ReF6 and ReF7". Journal of Inorganic and Nuclear Chemistry. 20 (3): 189–197.
doi:
10.1016/0022-1902(61)80267-4.
^
abA. F. Holleman; Wiberg, Egon; Wiberg, Nils (2001). Inorganic Chemistry. Boston: Academic Press.
ISBN0-12-352651-5.
^Richard L. Johnson; Bernard Siegel (1969). "On the synthesis of ReF7 and the existence of ReF2 and ReF3". Journal of Inorganic and Nuclear Chemistry. 31 (8): 2391–2396.
doi:
10.1016/0022-1902(69)80569-5.
^Hwang, I; Seppelt, K. (2000). "The structures of ReF− 8 and UF2− 8". Journal of Fluorine Chemistry. 102 (1–2): 69–72.
doi:
10.1016/S0022-1139(99)00248-1.