New structural units in molybdenum oxyfluoride chemistry

The solvothermal syntheses and crystal structures of five new molybdenum oxyfluorides are presented. These exhibit three novel structural units, each containing Mo in a reduced oxidation state: a dimeric [Mo2O4F2(C2H8N2)2] unit (Mo4+), a tetrameric [Mo4O8F10]6− unit (Mo5+) and an infinite chain [MoOF3]− unit (Mo4+). MoMo bonding is observed in each of the new building units.

Solvothermal synthesis provides a facile route to reduced molybdenum oxyfluorides containing novel metal–metal bonded units.Figure optionsDownload as PowerPoint slideHighlights
► A facile route to novel reduced molybdenum oxyfluorides.
► New dimer and tetramer units containing MoMo bonds.
► First example of a reduced, infinitely extended molybdenum oxyfluoride.