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Updated: Jun 19, 2026

Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry
Published on: October 18, 2019
Unraveling N-O Cleavage and N-H Bond Formation for NO Reduction to NH3 at a Bimetallic Fe-Mo Site
Tianyi Geng1, Xuebin Jiang2, Yaqi Wu3
1College of Chemistry, Beijing Normal University, Beijing 100875, China.
Abstract:
Reductive transformation of nitric oxide (NO) by heme proteins is critical for dissimilatory nitrate reduction to ammonium, a microbial nitrogen-conserving process. This study reports the complete reduction of bound NO to NH3 on a bimetallic FeMo platform through a protonation-hydride reduction strategy. Protonation of the μ-NO group generated a μ-NOH intermediate, which, upon reaction with HBpin, underwent simultaneous N-O bond cleavage and N-H bond formation to give a μ-NH imide. Subsequent transformations among nitride, imide, and amide were achieved via deprotonation/protonation and the additions of hydride, hydrogen atoms, and H2 provide molecular-level mechanistic insight into ammonia synthesis and nitrogenous-species interconversion.
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