hydroxylfluoride
Hydroxylfluoride is a hypothetical chemical compound with the formula HOF. It is an unstable molecule that has been the subject of theoretical study but has not been experimentally confirmed. The structure is predicted to consist of a hydrogen atom bonded to an oxygen atom, which is in turn bonded to a fluorine atom. In this arrangement, the oxygen atom carries a partial negative charge, and the hydrogen and fluorine atoms carry partial positive charges. Hydroxylfluoride would represent an unusual oxidation state for fluorine, which typically exhibits a strong tendency to form negative ions. The molecule's instability is attributed to the weak oxygen-fluorine bond and the strong electronegativity difference between oxygen and fluorine, which would lead to a propensity for decomposition. Theoretical calculations suggest that it would be a highly reactive species, likely decomposing rapidly into hydrogen fluoride (HF) and oxygen (O2) or other oxygen-containing species. Its existence has been explored within the context of high-energy physics and theoretical chemistry, but direct observation remains elusive.