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  • P-ISSN 1225-0163
  • E-ISSN 2288-8985

Stability Constants for Co(II) and Zn(II) of Multidentate N,O-Schiff Base Ligands in Dioxane-Water Mixtures

Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
1998, v.11 no.2, pp.145-149
Kim, Sun-Deuk
Kim, Jun-Kwang
Lee, Sung-Woo
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Abstract

Stability constants for the complexes of multidentate N,O-Schiff base ligands (bis-(salicylaldehyde)ethylendiamine(SED), bis-(salicylaldehyde)propylendiamine(SPD), bis-(salicylaldehyde)diethylenetriamine(SDT), bis-(salicylaldehyde)triethylenetetraamine(STT), and bis-(salicylaldehyde)tetraethylenepentaamine(STP) with Co(II) and Zn(II) were determined by a potentiometric method in a 70% dioxane-30% water mixture and ethanol, respectively. Stability constants for the complexes increased in the order of SPD<SED<SDT<STT<STP with the increasing number of donor atoms employed.

keywords
Schiff base ligands, stability constants


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