Facile N-H Bond Cleavage of Ammonia by an Iridium Complex Bearing a Noninnocent PNP-Pincer Type Phosphaalkene Ligand
Facile N-H Bond Cleavage of Ammonia by an Iridium Complex Bearing a Noninnocent PNP-Pincer Type Phosphaalkene Ligand
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DOI：
10.1021/ja407163z
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发表时间：
2013-08-14
影响因子：
15
通讯作者：
Ozawa, Fumiyuki
中科院分区：
文献类型：
--
作者：
Chang, Yung-Hung;Nakajima, Yumiko;Ozawa, Fumiyuki
合成了一种新型的含脱芳基吡啶单元的PNP-钳形的磷杂烯-铱配合物(3)。配合物3与氨水在室温下快速反应，得到高产率的母体氨基配合物。密度泛函理论计算表明，具有较强的接受pi能力的磷杂烯单元通过金属-配体的协同作用有效地促进了氨的N-H键断裂。
A novel PNP-pincer type phosphaalkene complex of iridium bearing a dearomatized pyridine unit (3) has been prepared. Complex 3 rapidly reacts with ammonia at room temperature to afford a parent amido complex in high yield. DFT calculations indicate that the phosphaalkene unit with a strong pi-accepting property effectively facilitates the N-H bond cleavage of ammonia via metal-ligand cooperation.