首页|Stable Radical Ion Pairs Induced by Single Electron Transfer:Frustrated Versus Nonfrustrated
Stable Radical Ion Pairs Induced by Single Electron Transfer:Frustrated Versus Nonfrustrated
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Single electron transition reactions between amines(Lewis base)and B(C6F5)3(Lewis acid)in coopera-tion with benzoquinones gave rise to a frustrated radical pair 3 and a nonfrustrated radical pair 4.Both of them were isolated as stable crystals and studied by single-crystal X-ray diffraction,superconducting quantum interference device measurements,elec-tron paramagnetic resonance,nuclear magnetic res-onance,and UV-vis spectroscopy.Antiferromagnetic exchange coupling was observed among both 3 and 4.Radical anion and cation are basically separated in 3,while 4 featured a relatively strong anion-cation π-π stacking interaction.This work demonstrated that the Lewis acid coupled electron transfer is an efficient way to prepare stable radical ion pairs.
Lewis acidfrustrated Lewis pairsnonfru-strated Lewis pairssingle electron transferradical ion pairs
Shanshan Kong、Shuxuan Tang、Tao Wang、Yu Zhao、Quanchun Sun、Yue Zhao、Xinping Wang
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State Key Laboratory of Coordination Chemistry,School of Chemistry and Chemical Engineering,Collaborative Innovation Center of Advanced Microstructures,Nanjing University,Nanjing 210023,Jiangsu
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