Stable Radical Ion Pairs Induced by Single Electron Transfer: Frustrated Versus Nonfrustrated

被引：13

作者：

Kong, Shanshan ^{[1
]}

Tang, Shuxuan ^{[1
]}

Wang, Tao ^{[1
]}

Zhao, Yu ^{[1
]}

Sun, Quanchun ^{[1
]}

Zhao, Yue ^{[1
]}

Wang, Xinping ^{[1
]}

机构：

[1] Nanjing Univ, Sch Chem & Chem Engn, Collaborat Innovat Ctr Adv Microstruct, State Key Lab Coordinat Chem, Nanjing 210023, Jiangsu, Peoples R China

来源：

CCS CHEMISTRY | 2023年 / 5卷 / 02期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

Lewis acid; frustrated Lewis pairs; nonfrustrated Lewis pairs; single electron transfer; radical ion pairs; LEWIS PAIRS; CRYSTAL-STRUCTURE; ANION SALT; CATION; TRIS(PENTAFLUOROPHENYL)BORANE; B(C6F5)(3); OXIDATION; MOLECULE; ADDUCTS; BORON;

D O I：

10.31635/ccschem.022.202202306

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Single electron transition reactions between amines (Lewis base) and B(C6F5)(3) (Lewis acid) in cooperation 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, electron paramagnetic resonance, nuclear magnetic resonance, 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 pi-pi stacking interaction. This work demonstrated that the Lewis acid coupled electron transfer is an efficient way to prepare stable radical ion pairs. [GRAPHICS] .

引用

页码：334 / 340

页数：7

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