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

대한화학회 제121회 학술발표회 및 총회 Coumaraz-2-on-4-ylidene (CONY): The Ambiphilic N-heterocyclic Carbene with Electronically Controllable Structures

2018년 2월 7일 12시 03분 42초
INOR.P-137 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
4월 19일 (목요일) 11:00~12:30
Inorganic Chemistry
저자 및
Hyunho Kim, Eunsung Lee1,*
Pohang University of Science and Technology, Korea
1Department of Chemistry, Pohang University of Science and Technology, Korea
Recently, N-heterocyclic carbenes (NHCs) are used for many fields, such as activation of small molecules and stabilization of main-group elements. Furthermore, ligands for transition metal complexes which are electron-rich are attract tools in ognanic and inogranic chemistry. Especially, the property that people have attention as ligands is σ-donor ability, which is most powerful among various ligands. So, the σ-donor properties of NHCs are unveiled so much, but the π-accepting properties of NHCs are not studied well. To unveil the π-accepting properties of NHCs, we have synthesized new ambiphilic NHC, called Coumaraz-2-on-4-ylidene (CONY). This ambiphilic NHC still has strong σ-donor ability and also π-accepting ability. In addition, the various kinds of precursors which have diverse electronic property were synthesized by simple two steps. The synthesis of their rhodium complexes and the specific reactivity of the NHCs were identified. Furthermore, CONY show the lowest LUMO energy level compared with other NHCs which was confirmed by the 77Se chemical shift of the selenium adducts.