| N2键合在固氮酶M簇笼内的一个可能证据 |
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| 引用本文： | 黄静伟,陈灿和.N2键合在固氮酶M簇笼内的一个可能证据[J].高等学校化学学报,1996,17(5):760-763. |
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| 作者姓名： | 黄静伟 陈灿和 |
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| 作者单位： | 厦门大学化学系 |
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| 基金项目： | 国家基础性研究重大关键项目 |
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| 摘 要： | 研究了重水固氮酶体系中Ｎ２对Ｃ２Ｈ２的还原活性和立体化学产物的影响，发现Ｎ２的存在不仅抑制了Ｃ２Ｈ２的还原活性，而且提高了产物乙烯中反式１，２－二氘代乙烯的相对含量，为证实Ｎ２在固氮酶Ｍ簇合物笼内的还原氢化提供了一个有力的证据。
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| 关 键 词： | M簇合物 还原 乙炔 固氮酶 氮键合位 |
A Proof for N_2-binding Inside M-cluster Cage of Nitrogenase |
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| HUANG Jing-Wei,CHEN Can-He,ZHANG Feng-Zhang,LIN Zhong-Yu, ZHANG Hong-Tu,WAN Hui-Lin.A Proof for N_2-binding Inside M-cluster Cage of Nitrogenase[J].Chemical Research In Chinese Universities,1996,17(5):760-763. |
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| Authors: | HUANG Jing-Wei CHEN Can-He ZHANG Feng-Zhang LIN Zhong-Yu ZHANG Hong-Tu WAN Hui-Lin |
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| Abstract: | The experiments that the reductive deuteration and products-selectivity of C_2H_2 are affected by N_2 in D_2O-nitgrogenase have been done. It is found that the C_2H_2 reductive activities decreased ca. 80.7%and 89.3%,respectively,with mixtures of C_2H_2and N_2 in the ratios of 1:108.3 and 1:216.7(volume ratio),as compared with ca. 42.6%and 74.2% observed with C_2H_2 in argon(1:65 and 1:108.3,volume ratio) in the absence of N_2;ca. 3.19%and 4.95%trans-2-didutero ethene were observed form FTIR spectra of the ethenes-1,2-d_2 obtained, respectively,with mixtures of C_2H_2 and N_2 in the ratios of1:108.3 and 1:216.7(volume ratio).The results give a strong proof for the conclusion in which N_2 binds inside the cage of M-cluster. |
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| Keywords: | N_2-bonding site M-cluster C_2H_2 reductive activity Stereo-selectivity |
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