Iron (III) Chelates Of Some Substituted 8-Hydroxy Quinoline 7-Sulfonic Acids. Part I Iron (III) 5-Chloro 8-Hydroxy Quinoline 7 -Sulfonate
| Main Authors: | K. Balachandran, Samir K. Banerji |
|---|---|
| Format: | Article Journal |
| Bahasa: | eng |
| Terbitan: |
, 1968
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/6471920 |
Daftar Isi:
- Iron (lII) forms in the aqueous medium a green complex with 5-chloro 8-hydroxy quinoline 7-sulfonic acid with the maximum absorbance at 600 mμ, stable in the \(p\)H range 2.5-4.5. The composition of the complex as established by three different methods spectrophotometrically is Fe(III)R (where R stands for 5-chloro 8-hydroxy quinoline 7-sulfonic acid). The stability constant calculated by the methods of Banerji and Dey and the Mole-ratio method was found to be log K=3.5\(\pm\)0.05 at 25° and the free energy of formation was found to be= -4.91 Kcal/mole at 25°.