Molybdenum oxytetrafluoride explained

Molybdenum oxytetrafluoride is the inorganic compound with the formula MoOF₄. It is a white, diamagnetic solid. According to X-ray crystallography, it is a coordination polymer consisting of a linear chain of alternating Mo and F atoms. Each Mo center is octahedral, the coordination sphere being defined by oxide, three terminal fluorides, and two bridging fluorides.^[1] In contrast to this motif, tungsten oxytetrafluoride crystallizes as a tetramer, again with bridging fluoride ligands.^[2]

Reactions

The acetonitrile adduct of molybdenum oxytetrafluoride can be prepared by treating molybdenum hexafluoride with hexamethyldisiloxane in acetonitrile:^[3]

Molybdenum oxytetrafluoride is susceptible to hydrolysis to give molybdenum difluoride dioxide.

Notes and References

1. 10.1039/j19680002503 . Fluoride crystal structures. Part II. Molybdenum oxide tetrafluoride . 1968 . Edwards . A. J. . Steventon . B. R. . Journal of the Chemical Society A: Inorganic, Physical, Theoretical . 2503 .
2. 10.1021/acs.inorgchem.0c02783 . Reactions of Molybdenum and Tungsten Oxide Tetrafluoride with Sulfur(IV) Lewis Bases: Structure and Bonding in [WOF4]4, MOF4(OSO), and [SF3][M2O2F9] (M = Mo, W) . 2020 . Turnbull . Douglas . Chaudhary . Praveen . Leenstra . Dakota . Hazendonk . Paul . Wetmore . Stacey D. . Gerken . Michael . Inorganic Chemistry . 59 . 23 . 17544–17554 . 33200611 . 226989898 .
3. 10.1016/j.jfluchem.2017.06.015 . Complexes of molybdenum(VI) oxide tetrafluoride and molybdenum(VI) dioxide difluoride with neutral N- and O-donor ligands . 2017 . Levason . William . Monzittu . Francesco M. . Reid . Gillian . Zhang . Wenjian . Hope . Eric G. . Journal of Fluorine Chemistry . 200 . 190–197 . free . 2381/40278 . free .