# Is there any experimental evidence for OClF5?

On page 88 and 89 of this document, the author laments that $\ce{OClF5}$ has still not been discovered. He says it would be "just about the ultimate possible storable oxidizer" (for rockets).

(Note: it's pages 88 and 89 as labeled by the writing on the page, not the pdf metadata.)

The text seems a little dated. Has anyone ever found/produced any $\ce{OClF5}$? A related compound, $\ce{OClF3}$, was made in 1970 (footnote on page 89). So this seems to indicate that one of those weird loopy pairs of electrons can be jammed/bonded with an atom of oxygen.

• In ClF5 there's an axial lone pair so your compound may be possible. – Mithoron Jul 25 '15 at 11:58
• The isoelectronic ClF6+ ion is known, but you have to hit ClF5 pretty hard, with PtF6 or [KrF][AsF6] according to Housecroft and Sharp. Greenwood and Earnshaw say "F5ClO has been claimed but the report could not be confirmed", but doesn't give the reference. – Ian Bush Jul 25 '15 at 13:27