A similar reaction like that of MoO is used in halogen lamps. The tungsten is evaporated from the tungsten filament and converted with traces of oxygen and iodine into the WOI, at the high temperatures near the filament the compound decomposes back to tungsten, oxygen and iodine. 
:WO  +  I    WOI,  ΔH < 0 (exothermic)