Octafluoride

An octafluoride is a compound or ion with the formula or, where n, m and q are independent variables and R any substituent and M is a central element. All of the examples listed below are with q between 1 and 4 inclusive.

Neutral octafluorides

No electrically neutral octafluorides are currently known to exist, although osmium octafluoride,, is theoretically possible. An early report of the synthesis of was much later shown to be a mistaken identification of [Osmium hexafluoride|].

Anionic octafluorides

In contrast, many anionic octafluorides are known, such as the octafluorozirconate, octafluorotantalate, octafluoroniobate, octafluoromolybdate, octafluorotungstate, octafluororhenate(VII), octafluoroiodate, octafluoroiridate, and octafluoroxenate(VI) anions.