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한국환경과학회지 = Journal of the environmental sciences v.15 no.8, 2006년, pp.799 - 809   피인용횟수: 1

새로운 N,N,O계 세 자리 리간드의 합성과 전위차적정법에 의한 전이금속 착물의 안정도상수의 결정
Synthesis of New N,N,O Tridentate Ligands and Determination of Stability Constants of Transition Metal Complexes by Potentiometry

김선덕   (대구대학교 화학.응용화학과UU0000355  ); 이도협   (대구대학교 화학.응용화학과UU0000355  );
  • 초록

    Hydrobromic acid salts of new N, N, O tridentate ligands containing phenol, 2-[(2-Methylamino- ethyl- amino)-methyl]-phenol(H-MMP. 2HBr), 5-Bromo-2-[(2-Methylamino-ethylamino)-methyl]-phenol (Br- MMP. 2HBr), 5-Chloro-2-[(2-Methylamino-ethylamino)-methyl]-phenol(Cl-MMP. 2HBr), 5-Methyl-2-[(2-Methylamino-ethylamino)-methyl]-phenol(Me-MMP. 2HBr), 5-Methoxy-2-I(2-Methylamino-ethylamino)- methyl]-phenol(MeO- MMP. 2HBr) and. 1-[(2-Methylamino-ethylamino)- methyl]-naphthalen-2-ol(Nap- MMP. 2HBr) were synthesized. The synthesized ligands were confirmed by C. H. N. atomic analysis, UV-visible and IR spectroscopies, $^1$ H NMR, $^{13}$ C NMR and mass analysis. The potentiometry study revealed that the proton dissociation constants(logK $_n^H$ ) of the synthesized ligands and stability constants (logK $_{ML}$ , logK $_{LM2}$ ) of transition metal complexes of Co(II), Ni(II), Cu(II), Zn(II), Cd(II) and Pb(II) ions occurred in three steps and the order of the calculated overall proton dissociation constants(log $\beta_p$ ) and stability constants (logK $_{ML}$ ) of ligands was Br-MMP. 2HBr $\delta_p$ ). The synthesized ligands usually form 2:1(ML $_2$ ) complexes with transition metal ions. The order of the stability constants of each transition metal ions was Co(II) Zn(II) ;> Cd(II) ;> Pb(II).


  • 주제어

    Tridentate ligands .   Proton dissociation constants .   Stability constants.  

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  • 이 논문을 인용한 문헌 (1)

    1. Kim, Seon-Deuk ; Lee, Hye-Won ; Jin, Gyoung-Rok 2009. "Synthesis of Pentadentate Nitrogen-Oxygen(N2O3) Ligands with Substituting Groups and Determination of Stability Constants of Their Transition Metal(II) Complexes" 한국환경과학회지 = Journal of the environmental sciences, 18(7): 735~746     

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