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Dergiler / Turkish Journal of Chemistry / 2011 / Cilt: 35 - Sayı: 2

Determination of stability constants of 5-(2-hydroxybenzylidene)-2-thioxodihydropyrimidine-4,6(1H,5H)-dione with copper(II) and mercury(II) ions

Determination of stability constants of 5-(2-hydroxybenzylidene)-2-thioxodihydropyrimidine4,6(1H ,5H)-dione with copper(II) and mercury(II) ions

Morteza BAHRAM,Nader Noroozi PESYAN,Abdolhossein NASERI,Masomeh TASBIHFOROSH

Sayfa
255–264
DOI
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Özet

In this work, a hard model chemometric method was used to determine the stability constants of copper(II) and mercury(II) complexes with the newly synthesized ligand 5-(2-hydroxybenzylidene)- 2-thioxodihydropyrimidine-4,6(1H,5H)-dione in acetonitrile by UV-Vis spectrophotometry. The ligand forms stable complexes with both metal cations. The protonation constants of the ligand were also measured in an ethanol-water (1:1) mixture.

Abstract

In this work, a hard model chemometric method was used to determine the stability constants of copper(II) and mercury(II) complexes with the newly synthesized ligand 5-(2-hydroxybenzylidene)- 2-thioxodihydropyrimidine-4,6(1H,5H)-dione in acetonitrile by UV-Vis spectrophotometry. The ligand forms stable complexes with both metal cations. The protonation constants of the ligand were also measured in an ethanol-water (1:1) mixture.

Anahtar kelimeler: Cu(II) and Hg(II) complexes, 5-(2-hydroxybenzylidene)-2-thioxodihydropyrimidine-4, 6(1H, 5H)-dione, spectrophotometry