Molybdenum difluoride dioxide
Molybdenum difluoride dioxide is the inorganic compound with the formula. It is a white, diamagnetic, volatile solid.
Structure
Gaseous molybdenum difluoride dioxide is a tetrahedral molecule. According to X-ray crystallography, the solid is a coordination polymer consisting of trigonal primatic chains of made by linking monomers. The fluoride and oxide positions are disordered. A similar motif is adopted by titanium tetrafluoride.Synthesis and reactions
The compound can be obtained by thermal decomposition of the sodium tetrafluorodioxomolybdate, which in turn is obtained from sodium molybdate:Heating sodium tetrafluorodioxomolybdate to 400 °C gives monomeric molybdenum difluoride dioxide, which polymerizes upon condensation:
The compound also arises by hydrolysis of molybdenum oxytetrafluoride:
The compound dissolves in dimethylformamide to give a adduct molybdenum difluoride dioxide bis: