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학술발표회초록보기

초록문의 abstract@kcsnet.or.kr

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  • 09월 12일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제110회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Ligand Variation for Highly Active Catalyst for CO2/epoxide Copolymerization forming cis-β conformation

등록일
2012년 8월 29일 11시 23분 48초
접수번호
0555
발표코드
IND.P-128 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 17일 (수요일) 16:00~19:00
발표형식
포스터
발표분야
공업화학
저자 및
공동저자
전종엽, 이분열
아주대학교 분자과학기술학과, Korea

A highly active catalyst for CO2/epoxide copolymerization was developed in our group. It contains cobalt metal in center of salcy-type ligand tethered by four quaternary ammonium salts. Contrary to the well-known salcy-type ligand metal symmetric framework, the (salcy)Co(III) complex adopt an unusual cis-β configuration, especially in the presence of a chelating additional donor. We found this information by growing single crystals of analogue complex. It bears methyl group instead of complex substituent which is hampering the growth crystal. We have tried to synthesis several variant ligands which readily form cis-β conformation. However these modified catalysts did not show any activity for CO2/PO copolymerization. The interasting phenomenon was that these catalysts adopt the cis-β configuration even in DMSO. It means cis-β conformation of those catalysts is so stable that it can not act as catalyst.


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