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.