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1981年,忻新泉等人,从配位化学的角度出发,提出了固氮酶双中心作用机制。认为在固氮酶中Fe原子是吸附活化底物的中心,它与由Mo—Fe—S簇化合构成的还原中心协同作用完成底物的还原过程。为了论证Fe是吸附活化中心,我们合成了含有铁硫的原子簇化合物,作为模拟体系,并进行了催化活性的研究。本文报道新型[(C_2H_5)_4N]_4[Fe_6S_9(SCH_2CH_2OH)Cl]簇合物的合成、结构和催化活性的研究。
In 1981, Xin Xinquan et al. Proposed a bi-centered mechanism of action of nitrogenase on the basis of coordination chemistry. It is considered that the Fe atom in the nitrogenase is the center of the activated substrate for adsorption and it cooperates with the reduction center composed of the Mo-Fe-S cluster to complete the reduction of the substrate. In order to demonstrate that Fe is the activation center for the adsorption, we synthesized the cluster compounds containing iron and sulfur as the simulation system and studied the catalytic activity. In this paper, the synthesis, structure and catalytic activity of novel [(C_2H_5) _4N] _4 [Fe_6S_9 (SCH_2CH_2OH) Cl] clusters were reported.