Journal of the Korean Chemical Society (대한화학회지)

Korean Chemical Society (대한화학회)
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A Study on Complex Formation of Heavy Metal Ions with N,N'-Oxalybis(salicylaldehyde hydrazone)

N,N'-Oxalylbis(salicylaldehyde hydrazone)과 중금속이온과의 착물 형성에 관한 연구

  • Published : 1991.04.20
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Abstract

The complexation of N,N'-oxalylbis(salicylaldehyde hydrazone) (OBSH) with Zn (II), Cd (II), and Pb(II) ions was studied by polarographic method in DMSO solution. The order of stability constants was Cd(II) < Zn(II) < pb(II), and all heavy metal ions formed stable complex with OBSH ligand. The stability constants of complexation were measured at various temperatures. As the results, enthalpy and entropy changes of the complexation were distributed on the complex stabilities.

N,N'-oxalylbis(salicylaldehyde hydrazone) (OBSH)과 Zn (II), Cd (II) 및 Pb(II) 이온들과의 착물 형성에 따르는 안정도상수를 DMSO 용액에서 폴라로그래피법으로 측정하였다. 안정도상수의 크기는 Cd(II) < Zn(II) < pb(II) 이온의 순서로 증가하였으며, 모든 중금속이온들의 OBSH 리간드와 매우 안정한 착물을 형성하였다. 안정도상수를 여러 온도에서 측정하여 엔탈피 및 엔트로피 변화를 구한 결과, 착물의 안정도에 많은 기여를 하고 있음을 알았다.

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