Journal of the Korean Chemical Society (대한화학회지)

Korean Chemical Society (대한화학회)
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Polarographic Behavior of 1-(2-Thiazolylazo) 2-naphthol in Acetonitrile

아세토니트릴 溶媒중에서 1-(2-Thiazolylazo)-2-naphthol 의 폴라로그래프적 거동

  • Zun Ung Bae (Department of Chemistry, Kyungpook National University) ;
  • Moo Lyong Seo (Department of Chemistry, Gyeongsang National University)
  • 배준웅 (경북대학교 자연과학대학 화학과) ;
  • 서무룡 (경상대학교 자연과학대학 화학과)
  • Published : 1988.02.20
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Abstract

The Polarographic behavior of 1-(2-thiazolylazo)-2-naphthol (TAN) in acetonitrile solution was studied. From the DC polarograms of TAN in acetonitrile solution, the type of reduction current and the effect of proton donor such as water have been investigated. In order to explain the reduction mechanism, the number of the electrons for each reduction step was measured by controlled potential coulometric technique and the electrolysis products were identified by UV-Vis spectroscopy and IR spectroscopy. The results were shown that the reduction of TAN in acetonitrile solution occurred with four-one electron steps. In addition, each reduction step was considerably reversible and the reduction current was diffusion controlled.

반양성자성 용매인 아세토니트릴 중에서 1-(2-thiazolylazo)-2-naphthol (이하 TAN으로 줄임)의 폴라로그래프적 성질을 조사하였다. 직류폴라로그램으로부터 환원전류의 유형과 양성자 주게 인물의 첨가에 따른 영향을 검토하였다. 그리고 환원반응에 관여한 전자수는 정전위분해법으로 구하였다. 또 일정전위전해생성물의 UV-Vis Spectrum과 IR-Spectrum으로부터 전해생성물을 확인하였다. 이상의 실험결과로부터 아세토니트릴 용매중에서 TAN은 1전자 4단계의 환원과정을 거쳐 최종적으로 아민화합물이 됨을 알았다. 또 각 환원과정은 모두 가역적이었으며, 각 단계의 환원전류는 확산지배적이었다.

Keywords

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