Requirements for Lewis Acid-Mediated Capture and N-N Bond Cleavage of Hydrazine at Iron
Requirements for Lewis Acid-Mediated Capture and N-N Bond Cleavage of Hydrazine at Iron
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DOI：
10.1021/acs.inorgchem.8b02433
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发表时间：
2019-01-21
影响因子：
4.6
通讯作者：
Szymczak, Nathaniel K.
中科院分区：
文献类型：
--
作者：
Kiernicki, John J.;Zeller, Matthias;Szymczak, Nathaniel K.
设计了带有吡啶（二卡宾）钳的铁络合物以探测刘易斯酸使能的N2 H4捕获和随后的N-N键断裂的要求。通过两种方法来安装包埋的硼刘易斯酸，以避免与游离卡宾和硼烷的刘易斯酸/碱淬灭相关的不相容性。硼烷刘易斯酸对N2 H4的捕获取决于刘易斯酸度和硼的空间位阻分布。在铁上的取代惰性初级配位球防止Fe-N2 H4相互作用以及还原时的N-N键均裂。
An iron complex bearing a pyridine(dicarbene) pincer was designed to probe the requirements of Lewis acid enabled N2H4 capture and subsequent N-N bond cleavage. Appended boron Lewis acids were installed by two methods to circumvent the incompatibilities associated with Lewis acid/base quenching of free carbenes and boranes. N2H4 capture by borane Lewis acids is dependent on both the Lewis acidity and the steric profile about boron. A substitutionally inert primary coordination sphere at iron prevents an Fe-N2H4 interaction as well as N-N bond homolysis upon reduction.