Current time in Korea 03:33 Jun 26 (Wed) Year 2019 KCS KCS Publications
KCS Publications
My Journal Log In Register
HOME > Search > Browsing(JKCS) > Archives

Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 12, Number 3
JKCSEZ 12(3)
June 20, 1968 

 
Title
Stability of Metal Chelates of 7-Nitroso-8-Hydroxyquinoline-5-Sulfonate

7-Nitroso-8-Hydroxyquinoline-5-Sulfonic Acid의 금속킬레이트 안정도 상수
Author
Q. Won Choi, Dong Hyung Lee, Joon Suk Oh, Kwang Woo Lee

최규원, 이동형, 오준석, 이광우
Keywords
Abstract
Stabilities of chelates of 7-nitroso-8-hydroxyquinoline-5-sulfonate have been determined for divalent transition metal ions, Mn(Ⅱ), Fe(Ⅱ), Co(Ⅱ), Ni(Ⅱ), Cu(Ⅱ), and Zn(Ⅱ) by means of the Calvin-Bjerrum technique. Comparison of these stability constants with those obtained for 8-hydroxyquinoline, and 8-hydroxyquinoline-5-sulfonate shows that the observed differences are essentially the results of the lower basicity of the sulfonated group and different metal-ligand bond. The divalent metal chelate stability sequence is not in agreement with the reported metal orders for other chelating agents. The stabilities were found to follow the order Mn(Ⅱ) < Fe(Ⅱ) ≒ Co(Ⅱ) > Ni(Ⅱ) < Cu(Ⅱ) > Zn(Ⅱ).
Page
81 - 84
Full Text
PDF