Molybdenum difluoride dioxide is the inorganic compound with the formula MoF2O2.

[1] Gaseous molybdenum difluoride dioxide is a tetrahedral molecule.

[2] According to X-ray crystallography, the solid is a coordination polymer consisting of trigonal primatic chains of made by linking Mo3F6O6 monomers.

[3] A similar motif is adopted by titanium tetrafluoride.

The compound can be obtained by thermal decomposition of the dioxotetrafluoride, which in turn is obtained from sodium molybdate:[3] Heating sodium dioxotetrafluoride to 400 °C gives monomeric difluoride dioxide, which polymerizes upon condensation: The compound also arises by hydrolysis of molybdenum oxytetrafluoride: The compound dissolves in dimethylformamide to give a bis(adduct):[4]