It can be prepared by tungsten powder and carbon monoxide under high temperature and high pressure, or by reductive carbonylation reaction of tungsten hexachloride and carbon monoxide in ether with zinc or aluminum as reducing agent, or by tungsten hexachloride and iron hexacarbonyl It can be obtained by reacting tungsten hexachloride and triethylaluminum in benzene at 50°C and 7000kPa with carbon monoxide to remove butane (C4H10).
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