Solvolysis of Anthraquinone-2-Carbonyl Chloride in Binary Solvent Mixtures

이성분 혼합용매계에서 염화 안트라퀴논-2-카르보닐의 가용매 분해반응$^{1,2}$

  • 이종팔 (동아대학교 이과대학 화학과) ;
  • 성대동 (동아대학교 이과대학 화학과) ;
  • 엄태섭 (동아대학교 이과대학 화학과) ;
  • 이익춘 (인하대학교 이과대학 화학과) ;
  • 손세철 (인하대학교 이과대학 화학과)
  • Published : 1985.10.20

Abstract

The rate constants for the solvolysis of anthraquinone-2-carbonyl chloride in binary solvent mixtures, methanol-acetonitrile, methanol-acetone, ethanol-acetonitrile and ethanol-acetone, have been studied by means of conductometry. Maximum rate phenomena were observed at the methanol mole fraction, $X_{MeOH}$ = 0.73~0.81 for methanol-acetonitrile and at $X_{MeOH}$ = 0.83 for methanol-acetone mixtures. The Kivinen and Grunwald-Winstein plots indicated that the reaction proceeds via $S_N2$ type mechanism. Application of Taft's solvatochromic correlation on the solvolysis rate revealed that both $\alpha$ and ${\pi}^*$ are important for reactions in methanol-acetonitrile and methanol-acetone mixtures, while only ${\alpha}$ influences significantly on the rate in ethanol-acetonitrile and ethanol-acetone mixtures.

Keywords

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