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  • 05월 20일 18시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제125회 대한화학회 학술발표회 및 총회 Kinetic Study of Reactions of the 5-Dimethylamino-Naphthalene-1-Sulfonyl Chloride

등록일
2020년 2월 4일 17시 54분 56초
접수번호
0305
발표코드
PHYS.P-225 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
온라인 PDF 제출
발표형식
포스터
발표분야
Physical Chemistry
저자 및
공동저자
Han joong Koh
General Science Education, Jeonju National University of Education, Korea
The solvolysis rate constants of 5-dimethylamino-naphthalene-1-sulfonyl chloride in 31 different solvents are well correlated with the extended Grunwald-Winstein equation, using the N solvent nucleophilicity scale and Y solvent ionizing scale with sensitivity values of 0.96 and 0.53 for l and m, respectively. These l and m values can be considered to support a SN2 reaction pathway. This interpretation is further supported by the activation parameters, i.e., relatively small positive activation enthalpy and large negative activation entropy values, and the solvent kinetic isotope effects (1.34 to 1.88). Also, the selectivity values (S = 1.2 to 2.9) obtained in binary solvents were consistent with the proposed mechanism.

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