摘要

An organic-inorganic hybrid polyoxoniobate, Na-8{Ni[ Ni(en)](2)Nb10O32}$ 28H(2)O (1) (en = ethanediamine), has been synthesized and characterized. It represents the first example of a trinuclear nickel- containing polyoxoniobate. The catalysis of 1 for allylic alcohol epoxidation was investigated at room temperature in aqueous solution, and was found to catalyze the epoxidation of 3- methyl- 2- buten- 1- ol with high conversion (98%) and selectivity (94%). Furthermore, magnetic measurements showed that the compound exhibits ferromagnetic interactions.