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제109회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Investigation of Mercury Ion Induced Deprotonation of Diamide Derivatives by Solution NMR spectroscopy

등록일
2012년 2월 16일 15시 06분 39초
접수번호
0992
발표코드
ANAL.P-588 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
4월 25일 (수요일) 18:00~21:00
발표형식
포스터
발표분야
분석화학
저자 및
공동저자
천아영, 안상두, 원다은, 서지혜, 민지은, 정기주
중앙대학교 화학과, Korea
A series of diamide derivatives was prepared by the condensation of 3,6-dioxaoctanedioic acid with various aromatic subunits having benzene, naphthalene, anthracene, and pyrene ring systems, and their complexation properties with mercury ion were investigated by NMR spectroscopy. When these diamide derivatives react with mercury, mercury ion induces deprotonation of the amide group next to aromatic rings. As a result, we could observe the changes in the chemical shift of those aromatic rings in 1H NMR spectra before and after the complexation with mercury ion. In addition, disappearance of the amide proton resonance signal was also observed as diamide derivatives react with excess of mercury ion, except diamide derivatives of benzene ring. The selective deprotonation by mercury ion was also confirmed through 13C NMR as well as 1H NMR. The structural change on the deprotonation process and the assigning of each peaks were carried out through 2D NMR methods such as COSY, HMBC, and HSQC. From all these experiments, it could be concluded that the deprotonation process strongly depends on the size and intrinsic property of aromatic subunits.

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