当前位置: X-MOL 学术J. Am. Chem. Soc. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Nitrite Reduction Cycle on a Dinuclear Ruthenium Complex Producing Ammonia
Journal of the American Chemical Society ( IF 15.0 ) Pub Date : 2018-01-02 , DOI: 10.1021/jacs.7b12020
Yasuhiro Arikawa 1 , Yuji Otsubo 1 , Hiroki Fujino 1 , Shinnosuke Horiuchi 1 , Eri Sakuda 1 , Keisuke Umakoshi 1
Affiliation  

The fundamental biogeochemical cycle of nitrogen includes cytochrome c nitrite reductase, which catalyzes the reduction of nitrite ions to ammonium with eight protons and six electrons (NO2- + 8H+ + 6e- → NH4+ + 2H2O). This reaction has motivated researchers to explore the reduction of nitrite. Although a number of electrochemical reductions of NO2- have been reported, the synthetic nitrite reduction reaction remains limited. To the best of our knowledge, formation of ammonia has not been reported. We report a three-step nitrite reduction cycle on a dinuclear ruthenium platform {(TpRu)2(μ-pz)} (Tp = HB(pyrazol-1-yl)3), producing ammonia. The cycle comprises conversion of a nitrito ligand to a NO ligand using 2H+ and e-, subsequent reduction of the NO ligand to a nitrido and a H2O ligand by consumption of 2H+ and 5e-, and recovery of the parent nitrito ligand. Moreover, release of ammonia was detected.

中文翻译:

生产氨的双核钌配合物的亚硝酸盐还原循环

氮的基本生物地球化学循环包括细胞色素 c 亚硝酸盐还原酶,该酶催化亚硝酸根离子还原为具有 8 个质子和 6 个电子的铵(NO2- + 8H+ + 6e- → NH4+ + 2H2O)。这种反应促使研究人员探索亚硝酸盐的还原。尽管已经报道了许多 NO2- 电化学还原,但合成亚硝酸盐还原反应仍然有限。据我们所知,尚未报道氨的形成。我们报告了在双核钌平台 {(TpRu)2(μ-pz)} (Tp = HB(pyrazol-1-yl)3) 上的三步亚硝酸盐还原循环,产生氨。该循环包括使用 2H+ 和 e- 将亚硝基配体转化为 NO 配体,随后通过消耗 2H+ 和 5e- 将 NO 配体还原为氮化物和 H2O 配体,和母体亚硝基配体的回收。此外,检测到氨的释放。
更新日期:2018-01-02
down
wechat
bug