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). It is used to make high-purity tungsten powder, catalyst, organic synthesis, etc.
Tungsten hexacarbonyl can be obtained by heating tungsten hexachloride, aluminum powder and carbon monoxide (1.1×107 Pa) to 100°C in an autoclave. Uses For the preparation of tungsten-containing compounds and materials, also used in photochemistry.
Under nitrogen protection and anhydrous conditions, add 35mg of tungsten hexacarbonyl, 5ml of freshly distilled toluene and 0.5ml of phenylacetylene into a pretreated 20 mL polymerization tube, stir and polymerize at room temperature for 24 h; then add 5 mL of methanol containing Toluene solution terminated the reaction. The reaction solution was filtered, and the filtrate was added dropwise to 400 mL of stirred methanol to precipitate the polyphenylene vinylene product. The precipitate was collected and dried in a vacuum oven at 25 °C until the quality was constant. The product was an orange powder with a yield of 58%.
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