期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 142, 期 13, 页码 6244-6250出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.0c00409
关键词
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资金
- National Natural Science Foundation of China [21903018, 21877025]
- Natural Science Foundation of Hebei Province of China [B2019201128]
- National Science Foundation [CHE 1661604, CHE-1855641]
A new molecular system for nitrogen reduction, involving a 2,3'-bipyridine-anchored, end-on-bridging dinitrogen complex of the Me2B-BMe2 intermediate (4), has been explored by theoretical methods. The 2,3'-bipyridine-mediated cleavage of the B-sp3-B-sp3 bond in 4 may lead to transient electron-rich sp(3)-hybridized boron species and subsequent activation of the strong N N triple bond of the complexed N-2. Through a boryl transfer sequence, a catalytic cycle may be achieved for the reductive addition of diboranes to a dinitrogen molecule with an energy span of 23 kcal/mol. In addition, the reaction is exothermic by 80.5 kcal/mol, providing a substantive chemical driving force.
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