Activation of Ammonia by a Carbene-Stabilized Dithiolene Zwitterion

Yuzhong Wang,Phuong M. Tran,Mitchell E. Lahm,Yaoming Xie,Pingrong Wei, Earle R. Adams,John N. Glushka,Zichun Ren,Vladimir V. Popik,Henry F. Schaefer III,Gregory H. Robinson

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY（2022）

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摘要

A carbene-stabilized dithiolene zwitterion (3) activates ammonia, affording 4 & BULL; and 5, through both single-electron transfer (SET) and hydrogen atom transfer (HAT). Reaction products were characterized spectroscopically and by single-crystal Xray diffraction. The mechanism of the formation of 4 & BULL; and 5 was probed by experimental and computational methods. This discovery is the first example of metal-free ammonia activation via HAT.

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dithiolene zwitterion,ammonia,carbene-stabilized

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