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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/50144
標題: | 以氮雜環烯烴穩定的硼陽離子 N-Heterocyclic Olefin Stabilized Boron Cations |
作者: | Wan-Hua Lee 李婉華 |
指導教授: | 邱靜雯(Ching-Wen Chiu) |
關鍵字: | 硼,硼陽離子,硼雙陽離子,氮雜環烯烴,路易士酸, boron,cations,borenium,boron cations,N-heterocyclic olefin., |
出版年 : | 2016 |
學位: | 碩士 |
摘要: | Boron mono- and di-cations featuring nucleophilic N-heterocyclic olefin (NHO) and pentamethylcyclopentadienyl (Cp*) substituent have been prepared and structurally characterized. Experimental and theoretical investigations show that [η5-Cp*B-NHO]2+ is considerably more Lewis acidic than [η5-Cp*B-IMes]2+ due to the steric congestion between NHO and Cp* leading much expose around the central boron atom. However, the weak interaction between NHO ligand and boron center result in the reaction product are generally unstable to isolate and characterize. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/50144 |
DOI: | 10.6342/NTU201600893 |
全文授權: | 有償授權 |
顯示於系所單位: | 化學系 |
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