【摘要】 采用水热技术合成一例含钴的有机-无机杂化多钒氧簇，其分子式为[Co(C₈H₂₀N₄)]₄[V₁₃^ⅣV₅^ⅤO₄₂（Cl）]·6H₂O（1）.研究表明，化合物1中[V₁₃^ⅣV₅^ⅤO₄₂（Cl）]^8-阴离子簇表面的富氧原子使其具有一定的Lewis碱性，其在苯甲醛与丙二腈的Knoevengel缩合反应中表现出优异的催化性能.室温下，30 min内反应转化率和选择性可分别达到98%和100%;催化剂回收后至少可以重复使用4次，具有较好的循环稳定性.更多还原

【Abstract】 A new organic-inorganic hybrid polyoxovanadate [Co(C₈H₂₀N₄)]₄[V₁₃^ⅣV₅^ⅤO₄₂（Cl）]·6H₂O（1） has been synthesized by hydrothermal synthesis.Research shows that the polyanionic cluster [V₁₃^ⅣV₅^ⅤO₄₂（Cl）]^8- in compound 1 has an exposed nucleophilic surface due to external oxygen atoms, which makes it possess a certain Lewis basicity.Therefore, compound 1 exhibited excellent catalytic performance in the Knoevengel condensation reaction of benzaldehyde and malononitrile.The conversion and selectivity of condensation reaction can reach 98 % and 100 % within 30 min at room temperature.Compound 1 shows good cycle stability for the current catalytic reaction and can be reused for at least 4 times after recovery.更多还原