Cleavage of the NN Triple Bond and Unpredicted Formation of the Cyclic 1,3-Diaza-2,4-Diborete (FB)2N2 from N2 and Fluoroborylene BF

被引：26
|
作者：
Xu, Bing [1 ,2 ,3 ]
Beckers, Helmut [3 ]
Ye, Haoyu [1 ,2 ]
Lu, Yan [3 ]
Cheng, Juanjuan [1 ,2 ]
Wang, Xuefeng [1 ,2 ]
Riedel, Sebastian [3 ]
机构：
[1] Tongji Univ, Sch Chem Sci, Shanghai 200092, Peoples R China
[2] Tongji Univ, Engn Dept, Shanghai Key Lab Chem Assessment & Sustainabil, Shanghai 200092, Peoples R China
[3] Free Univ Berlin, Inst Chem & Biochem Anorgan Chem, Fabeckstr 34-36, D-14195 Berlin, Germany
来源：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2021年 / 60卷 / 31期
基金：
中国国家自然科学基金;
关键词：
aromaticity; dinitrogen activation; fluoroborylene; puckered B2N2 ring; BORON; SPECTROSCOPY; AROMATICITY; FLUORIDES; COMPLEXES; LIGANDS; CO;
D O I：
10.1002/anie.202106984
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A complete cleavage of the triple bond of N-2 by fluoroborylene (:BF) was achieved in a low-temperature N-2 matrix by the formation of the four-membered heterocycle FB(mu-N)(2)BF, which lacks a trans-annular N-N bond. Additionally, the linear complex FB=N-N=BF and cyclic FB(eta(2)-N-2) were formed. These novel species were characterized by their matrix infrared spectra and quantum-chemical calculations. The puckered four-membered-ring B2N2 complex shows a delocalized aromatic two-electron p-system in conjugation with the exo-cyclic fluorine pi lone pairs. This work may contribute to a rational design of catalysts based on borylene for artificial dinitrogen activation.
引用
收藏
页码：17205 / 17210
页数：6
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