대한화학회지 (Journal of the Korean Chemical Society)

  • 제30권5호
  • /
  • Pages.433-440
  • /
  • 1986
  • /
  • 1017-2548(pISSN)
  • /
  • 2234-8530(eISSN)
대한화학회 (Korean Chemical Society)
권호 표지

디메틸술폭시드용매 속에서 파라니트로벤젠아조레조르시놀의 폴라로그래피的 還元에 관한 硏究

Study on Polarographic Reduction of p-Nitrobenzeneazoresorcinol in Dimethylsulfoxide

  • 최칠남 (조선대학교 사범대학 과학교육과) ;
  • 조기형 (전남대학교 자연과학대학 화학과) ;
  • 최주현 (조선대학교 사범대학 과학교육과)
  • Chil Nam Choe (Department of Science Education, College of Education, Chosun University) ;
  • Ki Hyung Jo (Department of Chemistry, Chonnam National University) ;
  • Chu Hyun Choe (Department of Science Education, College of Education, Chosun University)
  • 발행 : 1986.10.20
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초록

反陽性子性 溶媒인 dimethylsulfoxide中에서 p-nitrobenzeneazoresororcinol<4n-BAR>에 대하여 직류 폴라로그래피적 거동을 조사하였다. 0.05M $NaClO_4$의 DMSO溶媒中에서 4n-BAR은 1電子 2段階의 還元過程을 거쳐 hydrazo기를 포함하는 化合物로 還元된다. 還元反應의 中間 生成物은 比較的 反陽性子性 溶媒 속에서 安定하였다. 各 段階의 還元電流는 擴散支配的이었으며 一部 反應電流도 包含되었다. 酸을 添加함에 따라서 2個의 還元波가 하나로 合致되며 [acid]/[reductant]의 몰 (M)비가 M = 2인 條件에서 加電位(-E)에 대해 $log(i_d-i)(Mi_d/2-i)/i$/의 可逆性은 1電子 2段階 還元反應이고 非可逆的이었다.

The direct current polarographic behavior of 4n-BAR in dimethylsulfoxide as an aprotic solvent have been investigated. The reduction of 4n-BAR in 0.05M sodium perchlorate solution proceeds along two one-electron steps to give the corresponding compound containing hydrazo groups, each reduction wave was considerably diffusion controlled and irreversible. By addition of acid HAc to 4n-BAR in DMSO solvent, the two reduction waves have coalesced into one in the condition M $\geq$ mole ratio, acid/reductant(M = 2), the slope of $log(i_d-i)(Mi_d/2-i)/i$/ vs. (-E) is irreversible along one-electron steps reduction waves.

키워드

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