在固氮酶中,N_2和H_2O~+的还原反应是竞争电子的过程。我们曾报道过,以近紫外光辐照VCl_2、VCl_3的水或醇的溶液时,可使N_2分子还原质子化变成N_2H_4和NH_3,同时发生溶剂质子的还原放氢反应。这个放氢反应是主要反应,而且是一个催化循环反应。为了提高V~(2+)光还原氮的能力,本工作选用了一些含O、N、P原子又具有π电子的配位体(Ln),把 In nitrogenase, the reduction of N 2 and H 2 O + is the process of competition for electrons. We have reported that the near-ultraviolet light irradiation of VCl_2, VCl_3 water or alcohol solution, the N_2 molecules can be protonated into N_2H_4 and NH_3, while the solvent proton reduction hydrogenation reaction. This discharge reaction is the main reaction, but also a catalytic cycle reaction. In order to improve the ability of V ~ (2+) to reduce nitrogen, several ligands (Ln) containing O, N, P atoms and π electrons were selected in this work.