Journal of the Korean Chemical Society (대한화학회지)

Korean Chemical Society (대한화학회)
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Extrathermodynamic Relationships for the Nucleophilic Addition Reaction of Mercaptan to a Carbon Double Bond

炭素二重結合에 대한 Mercaptan의 친핵성 첨가 반응의 Extrathermodynamic Relationship에 관한 연구

  • OK-HYUN PARK (Dept. of Chemistry, College of Liberal Arts and Science, Pusan National University) ;
  • TAE-SUP UHN (Dept. of Chemistry, College of Liberal Arts and Science, Dong A University)
  • 박옥현 (부산대학교 문리과대학 화학과) ;
  • 엄태섭 (동아대학교 문리과대학 화학과)
  • Published : 19691200
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Abstract

The activation parameters for the nucleophilic addition reactions of n-propyl-, n-butyl-, n-amyl-and n-hexyl-mercaptan to 3, 4-methylene-dioxy-${\beta}$-nitrostyrene were determined at pH 5.8 and pH 2.0, and also the isokinetic temperature of the reactions at pH 5.8 was obtained numerically 262${\circ}$K, and at pH 2.0, 17.1${\circ}$K. From the values obtained above, the fact that the mercaptan having the longer carbon chain has the greater nucleophilicity of it in the addition reactions has been discussed by the extrathermodynamic analysis of ${\Delta}H^{\neq}$and ${\Delta}S^{\neq}$.

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References

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