Tungsten Oxytetrafluoride

Tungsten can react with fluorine gas, which is tungsten powder react with fluorine gas should at 200 ℃, but  fine powder at room temperature can be reacted with fluorine gas. Besides tungsten rod needs at 300 ℃ can it react with the fluorine .
Tungsten tetrafluoride is a white monoclinic crystalline, CAS registry number: 13520-79-1. Its physical properties are as follows: chemical formula: WOF4, molecular weight: 275.9, melting point: 110 ℃, boiling point: 185 ℃, vapor pressure (P unit is mmHg, 1mmHg = 133.322Pa, T to K): 105-186 ℃ lgP = 9.69-3125 / T, 50 -104 ℃ lgP = 10.96-3605 / T. Besides, it is easily hydrolysis and deliquescence, in moist air the color will turn yellow, and generate hydrofluoric acid, but insoluble in tungsten tetrachloride. Meanwhile tungsten oxytetrafluoride and tungsten hexafluoride having similar strong reactivity can react with organic compound and metal chlorides. But when compared to tungsten hexafluoride found tungsten oxytetrafluoride has more stable reactivity. 

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