个人信息Personal Information
教授
博士生导师
硕士生导师
性别:男
毕业院校:日本东京大学
学位:博士
所在单位:化工学院
电子邮箱:qujp@dlut.edu.cn
Mechanistic Insights into the Methylenation of Ketone by a Trinuclear Rare-Earth-Metal Methylidene Complex
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论文类型:期刊论文
发表时间:2015-01-12
发表刊物:ORGANOMETALLICS
收录刊物:SCIE、EI、Scopus
卷号:34
期号:1
页面范围:366-372
ISSN号:0276-7333
摘要:Trinuclear rare-earth-metal methylidene (CH22-) complexes are an emerging class of compounds that serve as methylidene transfer agents for methylenation of carbonyl compounds. Herein, the reaction of a trinuclear scandium methylidene complex with acetophenone was used as a model reaction of the multimetallic-cooperating methylidene transfer case, and its detailed mechanism has been investigated by the DFT approach. The analyses of Wiberg bond index, electron occupation, the frontier molecular orbital, and natural charge provide us a clear and comprehensive understanding of the CH22-/O2- group interchange process assisted by cooperating multimetal sites. The mechanism presented here is markedly different from conventional Wittig and transition-metal-mediated Wittig-type reactions. In addition, the behavior of mu(3)-CH2 in a multinuclear complex system is also demonstrated. This study not only enriches the chemistry of metal Wittig-type reactions but also sheds light on the intermetallic cooperation for methylidene transfer.