Journal of the Korean Chemical Society (대한화학회지)

Korean Chemical Society (대한화학회)
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Effect of High Pressure on the Stability of Metal Complex Ion by Polarographic Method

폴라로그래피에 의한 金屬錯이온의 安定度에 미치는 壓力의 影響

  • Heung Lark Lee (Department of Chemistry, College of Natural Sciences, Kyungpook National University) ;
  • Zun Ung Bae (Department of Chemistry, College of Natural Sciences, Kyungpook National University) ;
  • Yu Chul Park (Department of Chemistry, College of Natural Sciences, Kyungpook National University) ;
  • Jong Hoon Yun (Department of Chemistry, College of Natural Sciences, Kyungpook National University)
  • 이흥락 (慶北大學校 自然科學大學 化學科) ;
  • 배준웅 (慶北大學校 自然科學大學 化學科) ;
  • 박유철 (慶北大學校 自然科學大學 化學科) ;
  • 윤종훈 (慶北大學校 自然科學大學 化學科)
  • Published : 1988.02.20
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Abstract

The effect of high pressure on the stability of copper(II), cadmium(II) and zinc (II) complex ions with ethylenediamine, propylenediamine, diethylenetriamine has been investigated polarographically. 0.10M KN$O_3$ solution was used as a supporting electrolyte. The concentration of chelating agents was varied from 0.01M to 1.00M. The dissociation constants of metal complex ions were increased with increasing the pressure from 1 atmosphere to 1,500 atmospheres. The increment of the dissociation constant per unit atmosphere varied from 1.1 ${\times} 10^{-3}$% for Cu(dien)$_2^{2+}$ to 5.0 ${\times} 10^{-3}$ % for Zn(en)$_2^{2+}$.

에틸렌디아민, 프로필렌디아민 및 디에틸렌트리아민의 구리(II), 카드뮴(II) 및 아연(II) 착이온의 安定度에 미치는 壓力의 影響을 폴라로그래피로 조사하였다. 支持電解質로서는 0.10M의 KN$O_3$ 용액을 쓰고, 킬레이트제의 농도는 0.01M에서 0.1M까지 변화시켰다. 압력이 1기압에서 1,500기압으로 증가함에 따라 금속착이온의 解離常數는 증가하였으며, 단위압력당 증가율은 $Cu(dien)_2^{2+}$의 1.1 ${\times} 10^{-3}$ %에서 Zn(en)$_2^{2+}$의 5.0${\times} 10^{-3}$ % 까지의 값으로 나타났다.

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