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

Studies on the Electrochemical Behavior of Heavy Lanthanide Ions and the Synthesis, Characterization of Heavy Metal Chelate Complexes(II). Synthesis and Characterization of Eight Coordinate Tungsten(IV) and Cerium(IV) Chelate Complex

Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
1992, v.5 no.1, pp.41-49
Kang, Sam Woo
Chang, Choo Wan
Suh, Moo Yul
Lee, Doo Youn
Choi, Won Jong
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Abstract

An attempt was made to prepare two series of tetrakis eight-coordinate tungsten(IV) and cerium(IV) complexes containing the 5,7-dichloro-8-quinolinol(N:<TEX>${\pi}$</TEX>-acceptor atom, O:<TEX>${\pi}$</TEX>-donor atom) ligand. Tetrakis eight-coordinate tungsten(IV) complex of 2-mercaptopyrimidine(N:<TEX>${\pi}$</TEX>-acceptor atom, S:<TEX>${\pi}$</TEX>-donor atom) ligand have also been prepared. And the new series of mixed-ligand eight-coordinate tungsten(IV) complexes containing bidentate ligands 5,7-dichloro-8-quinolinol and 2-mercaptopyrimidine have been prepared, isolated by TLC and characterized. <TEX>$W(dcq)_4$</TEX>, <TEX>$W(dcq)_3(mpd)_1$</TEX>, <TEX>$W(dcq)_2(mpd)_2$</TEX>, <TEX>$W(dcq)_1W(dcq)_3$</TEX> and <TEX>$W(mpd)_4$</TEX> complexes of MLCT absorption band appeared to 710nm, 680nm, 625nm, 581nm, and 571nm(<TEX>${\varepsilon}\;max

keywords
New series of 8-coordinated w(IV) and Ce(IV) complexes, UV-Visible spectra, <TEX>$^1H$</TEX>-NMR spectra, Inertness


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