Stability Constants for Transition Metal ions of Hexadentate <TEX>$N_6$</TEX> Ligands Containing Two Pyridyl Groups

Kim, Sun-Deuk; 김선덕; Kim, Jun-Kwang; 김준광; Park, Yoon-Yul; 박윤열

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P-ISSN1225-0163
E-ISSN2288-8985
SCOPUS, ESCI, KCI

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

e-Submission

Vol.12, No.5

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Stability Constants for Transition Metal ions of Hexadentate $N_6$ Ligands Containing Two Pyridyl Groups

Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985

1999, v.12 no.5, pp.397-402

Kim, Sun-Deuk
Kim, Jun-Kwang
Park, Yoon-Yul

Kim, S., Kim, J., & Park, Y. (1999). Stability Constants for Transition Metal ions of Hexadentate <TEX>$N_6$</TEX> Ligands Containing Two Pyridyl Groups. , 12(5), 397-402.

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Abstract

The open-chain hexadentate $N_6$, ligand containing two pyridyl groups, 1,15-bis(2-pyridyl)-2,6,10,14-tetraazapentadecane (bpyped) has been synthesized as its tetrahydroehloride salt and characterized by EA, IR, NMR, and Mass. Its proton dissociation constants($logK{^n}_H$) and stability constants ($log\;K_{ML}$) for Co(II), Ni(II), Cu(II) and Zn(II) ions were determined at $25^{\circ}C$ and ionic strength 0.10 M($KNO_3$) in aqueous solution by potentiometry and compared with those or analogous $N_6$ ligands contain one or two propylenic spacers, which make six-membered chelate rings, between the aliphatic nitrogen atoms.