METHOD OF PRODUCTION OF OXO-METHYLATE COMPLEXES OF RHENIUM, NIOBIUM AND TANTALUM Russian patent published in 2004 - IPC

FIELD: chemistry of oxoalkoxo complexes of metals holding the greatest promise for production of oxide and metallic materials. SUBSTANCE: proposed method provides for increased yield of products at synthesis of oxomethylate complexes at common formula M₄O₂(OCH₃)₁₄(ReO₄)₂ or M₂(OCH₃)₈(ReO₄)₂ (where M is Nb, Ta) by interaction of powder-like rhenium oxide (VII) Re₂O₇ with niobium methylates Nb₂(OCH₃)₁₀ and/or tantalum methylates Ta₂(OCH₃)₁₀ in form of solutions in dehydrated toluene at the following heating modes: 1) keeping the reagents at room temperature after mixing for at least 3 min at continuous mixing; 2) keeping the reagents at temperature of 29-38 C for 30-60 min at continuous mixing; 3) boiling for 5-20 min. After cooling, yield of target products reaches 93% (relative to introduced Re₂O₇). EFFECT: enhanced efficiency. 6 ex