一种具有顺式-N2H4配体的硫桥二铁（II）配合物。

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2013-07-01 DOI:10.1002/zaac.201300163

Bryan D Stubbert, Javier Vela, William W Brennessel, Patrick L Holland

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引用次数: 15

摘要

通过LFeII（μ-S）FeIIL（1；L=空间位阻的β二酮亚胺盐配体）与2摩尔当量的N2H4反应，制备了带有顺式-N2H4（肼）配体的硫桥二亚胺（II）配合物。如晶体学、核磁共振、振动和电子吸收光谱所示，形成了亚稳态二铁（II）肼配合物LFeII（μ-S）（μH-N-NH2）FeII（3）。化合物3已被晶体表征为其DBU（1,8-二氮杂双环[5.4.0]十一碳-7$ene）加合物，其表现出弱的N-H··DBU氢键。合成过程产生大约2当量的NH3。3中的顺式-N2H4桥可能与固氮酶FeMoco上中间体的结构和功能有关。

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A Sulfide-Bridged Diiron(II) Complex with a cis-N₂H₄Ligand.

A sulfide-bridged diiron(II) complex bearing a cis-N₂H₄ (hydrazine) ligand has been prepared by reaction of LFe^II(μ-S)Fe^IIL (1; L = sterically encumbered βdiketiminate ligand) with 2 molar equivalents of N₂H₄. The metastable diiron(II) hydrazine complex LFe^II(μ-S)(μH N-NH₂)Fe^II (3) is formed, as shown by crystallography, and NMR, vibrational, and electronic absorption spectroscopies. Compound 3 has been crystallographically characterized as its DBU (1,8-diazabicyclo[5.4.0]undec-7$ene) adduct, which exhibits weak N-H···DBU hydrogen bonding. The synthetic process evolves roughly 2 equivalents of NH₃. The cis-N₂H₄ bridge in 3 may be relevant to the structure and function of intermediates on the FeMoco of nitrogenase.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.