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| Type |
Poster Presentation |
| Area |
Inorganic Chemistry |
| Room No. |
Event Hall |
| Time |
4월 19일 (목요일) 11:00~12:30 |
| Code |
INOR.P-173 |
| Subject |
A Zinc(II) Redox-Active Ligand Complex-Triggered CO2 Reduction |
| Authors |
Haewon Jeong, Hyeri Jeon, Seungwoo HONG*
Department of Chemistry, Sookmyung Women's University, Korea
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| Abstract |
Classic examples of metal complexes housed the innocent ligand in the sense that we can confidently assign the metal oxidation state without complications from any redox-activity of the ligands. However, recent reports suggested that redox-active ligands exhibited well-defined redox process and hence, they are capable of carrying out multielectron reactions by conferring nobility on base metals by combining a 1e- redox change at ligand with a 1e- redox change at metal for an overall 2e-. Therefore, non-innocent ligands have attracted particular attention in catalytic applications. The ability of bis(thiosemicarbazone) ligands to chelate metal ions such as zinc and copper in the biological system was previously demonstrated. However, their redox-active behavior in catalytic applications have yet been reported. Herein, we synthesized a hepta-coordinated Zn(II) complex with redox-active bis(thiosemicarbazone) ligand. A mononuclear Zn(II) complex can be converted to a dinuclear Zn(II) complex upon addition of base due to deprotonation of ligand. Interestingly, the mononuclear Zn(II) complex was able to catalyze electrochemical CO2 reduction reaction resulting in the CO and formate ion with quantitative yield.
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| E-mail |
jhw-94@hanamail.net |
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121st General Meeting of the KCS