Method for synthesizing hafnium tetra-tert-butoxide

Method for synthesizing hafnium tetra-tert-butoxide

  • CN 102,351,891 B
  • Filed: 08/31/2011
  • Issued: 03/18/2015
  • Est. Priority Date: 08/31/2011
  • Status: Active Grant
First Claim
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1. the synthetic method of four tert.-butoxy hafniums, is characterized in that step is:

  • (1) under nitrogen atmosphere, 49.2 grams of potassium tert.-butoxides and 200 mL normal hexanes are added in 500mL three-necked bottle, mechanical stirring;

    (2) 32 grams of hafnium tetrachlorides are joined in above-mentioned reaction system in batches, keep the temperature of reaction system not higher than 60 DEG C;

    After adding hafnium tetrachloride, allow the temperature of reaction system remain between 40-65 DEG C, under the condition of mechanical stirring protection of inert gas, react 6-10 hour;

    (3) then remove the solvent of reaction under normal pressure, after equal solvent normal hexane all removes, underpressure distillation, collects the cut of 90-92 DEG C/5 mmHg, is four tert.-butoxy hafnium compounds.

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