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以一个氮杂穴状大环配体为自由配体，与硝酸钴经配合反应合成了一个新的穴状单核钴配合物[ CoL (NO3)]·(NO3)·8H2O(1)，其晶体结构经X-射线单晶衍射表征。采用紫外-可见分光光度法对1催化p-硝基苯酚醋酸酯( NA)的水解动力学性质进行了研究。结果表明：催化水解速率对底物( NA)及配合物浓度均呈一级反应，催化水解速率受酸碱平衡影响。“,”A novel mononuclear complex, [CoL(NO3)]·(NO3)·8H2O(1), was synthesized by complexation reaction of N-heterocryptating macrocyclic ligand with Co ( NO3 ) 2 . The structure was characterized by X-ray crystal diffraction analysis. The hydrolysis kinetic properties of 1 towards p-ni-trophenyl acetate( NA) was studied by UV-Vis. The results showed that the catalytic hydrolysis rate was first order reaction, and the reaction was influenced by acid-base equilibrium.