化学
表面改性
质子化
铬
卤化物
硅烷化
药物化学
螯合作用
金属
立体化学
组合化学
有机化学
催化作用
离子
物理化学
作者
Zhu‐Bao Yin,Botao Wu,Gao‐Xiang Wang,Junnian Wei,Zhenfeng Xi
摘要
Isolation of key intermediate complexes in dinitrogen functionalization is crucial for elucidating the mechanistic details and further investigation. Herein, the synthesis and characterization of (μ-η1:η1-N2)(η1-N2)-Cr(I) 3 and (η1-N2)2-Cr(0) complexes 4 supported by Cp* (Cp* = C5Me5) and NHC ligands were reported. Further functionalization of Cr(0)-N2 complex 4 with silyl halides delivered the key intermediates in the alternating pathway, the chromium diazenido complex 5 and the chromium side-on η2-hydrazido complex 6. Protonation of 6 led to the quantitative formation of N2H4. Moreover, the [η2-Me3SiNNSiMe3]2– unit in 6 enabled N–C bond formation reactions with CO2 and tBuNCO, giving the corresponding N,O-chelating hydrazidochromium complexes 7 and 8, respectively.
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