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摘要

Purifying niobium alkoxides (I) comprises addition of 0.01-5 wt.% of an alcohol (II) or treatment with an oxygen-containing gas, optionally followed by distillation. Purifying niobium alkoxides of formula (I) comprises addition of 0.01-5 wt.% of an alcohol of formula (II) or treatment with an oxygen-containing gas, optionally followed by distillation. Nb(OR) 5 (I) R 1OH (II) R, R 11-12C alkyl. An independent claim is also included for niobium alkoxides produced as above.