COORDINATION SELECTIVITIES IN IRON(II) AND VANADIUM(V) COMPLEXES WITH THE MULTIDENTATE LIGANDS, 7-[(3,5-DIHALO-2-PYRIDYL)AZO]-8-HYDROXYQUINOLINE-5-SULFONIC ACID

被引：8
|
作者：
HUANG, H
KAI, F
SHODA, T
NAKAMURA, M
机构：
[1] KUMAMOTO UNIV,GRAD SCH NAT SCI & TECHNOL,DEPT ENVIRONM SCI,KUMAMOTO 860,JAPAN
[2] KUMAMOTO UNIV,FAC SCI,DEPT CHEM,KUMAMOTO 860,JAPAN
来源：
JOURNAL OF COORDINATION CHEMISTRY | 1993年 / 28卷 / 02期
关键词：
COORDINATION SELECTIVITY; FE(II); V(V); MULTIDENTATE LIGANDS;
D O I：
10.1080/00958979308035155
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The reactions of Fe(II) and V(V) with the title ligands were studied in aqueous solutions by focussing on the coordination selectivity of chelate sites using polarographic and spectrophotometric methods. Fe(II) ion, as a borderline acid, selectively coordinated to the comparatively soft N,N,O-terdentate chelate site containing an azo group; V (V) ion as a hard acid selectively bound to the relatively hard N,O-chelate site in the 8-quinolinol moiety. The complexing reactions of the two metal ions with the ligands 2-[(3,5-dihalo-2-pyridyl)azo]-1-hydroxynaphthalene-4-sulfonic acid, 1-[(3,5-dihalo-2-pyridyl)azo]-2-hydroxynaphthalene-6-sulfonic acid, and 7-[(4-chloro or unsubstituted phenyl)azo]-8-hydroxyquinoline-5-sulfonic acid were also studied for the comparative discussion.
引用
收藏
页码：155 / 166
页数：12
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