游离氮杂环卡宾（NHC）在镍-NHC体系中氨硼烷催化脱氢反应中的作用。
The role of free N-heterocyclic carbene (NHC) in the catalytic dehydrogenation of ammonia-borane in the nickel NHC system.
作者信息
Zimmerman Paul M, Paul Ankan, Zhang Zhiyong, Musgrave Charles B
机构信息
Department of Chemical Engineering, Stanford University Stanford, CA 94305, USA.
出版信息
Angew Chem Int Ed Engl. 2009;48(12):2201-5. doi: 10.1002/anie.200803211.
PMID:19204967
Abstract
Enders' N-heterocyclic carbene (NHC) dehydrogenates ammonia-borane with a relatively low barrier, producing NH(2)BH(2) and NHC-(H)(2). The nickel NHC catalyst present in the reaction media can activate the NHC-(H)(2) produced to regenerate the free NHC and release H(2). The release of free NHC enables further dehydrogenation of ammonia-borane.
摘要
恩德斯的氮杂环卡宾（NHC）以相对较低的势垒使氨硼烷脱氢，生成NH(2)BH(2)和NHC-(H)(2)。反应介质中存在的镍氮杂环卡宾催化剂可活化生成的NHC-(H)(2)，以再生游离的氮杂环卡宾并释放出H(2)。游离氮杂环卡宾的释放使得氨硼烷能够进一步脱氢。
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