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  • 02월 19일 10시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제121회 대한화학회 학술발표회, 총회 및 기기전시회 안내 A Zinc(II) Redox-Active Ligand Complex-Triggered CO2 Reduction

2018년 2월 7일 15시 35분 36초
INOR.P-173 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
4월 19일 (목요일) 11:00~12:30
Inorganic Chemistry
저자 및
Haewon Jeong, Hyeri Jeon, Seungwoo HONG*
Department of Chemistry, Sookmyung Women's University, Korea
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.