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Potentiometric and Thermodynamic Studies of 3-(4-Methoxyphenyl)-5-azorhodanine Derivatives and their Metal Complexes with Some Transition Metals. XIV
Al-Sarawy, A. A., El-Bindary, A. A., El-Sonbati, A. Z. and Omar, T. Y. Potentiometric and Thermodynamic Studies of 3-(4-Methoxyphenyl)-5-azorhodanine Derivatives and their Metal Complexes with Some Transition Metals. XIV Chemical Papers, Vol.59, No. 4, 2005, 261-266
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Document type:
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Článok z časopisu / Journal Article |
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Collection:
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Chemical papers
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| Attached Files |
| Name |
Description |
MIMEType |
Size |
Downloads |
n594a261.pdf
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594a261.pdf |
application/pdf |
137.76KB |
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| Author(s) |
Al-Sarawy, A. A.
El-Bindary, A. A.
El-Sonbati, A. Z.
Omar, T. Y.
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| Title |
Potentiometric and Thermodynamic Studies of 3-(4-Methoxyphenyl)-5-azorhodanine Derivatives and their Metal Complexes with Some Transition Metals. XIV
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| Journal name |
Chemical Papers
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| Publication date |
2005
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| Year available |
2005
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| Volume number |
59
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| Issue number |
4
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| ISSN |
0366-6352
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| Start page |
261
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| End page |
266
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| Place of publication |
Poland
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| Publisher |
Versita
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| Collection year |
2005
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| Language |
english
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| Subject |
250000 Chemical Sciences
250300 Organic Chemistry
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| Abstract/Summary |
A series of 3-(4-methoxyphenyl)-5-azorhodanine derivatives have been prepared and characterized by elemental analysis, 1 H NMR, and IR spectra. Proton—ligand dissociation constants of the derivatives and metal—ligand stability constants of their complexes with Mn 2+ , Co 2+ , Ni 2+ , and Cu 2+ ions have been determined potentiometrically in 0.1 M-KCl and 40 vol. % ethanol—water mixture. The influence of substituents on the dissociation and stability constants was examined on the basis of the electron-repelling property of the substituent. The stability constants of the formed complexes increase in the order Mn 2+ , Co 2+ , Ni 2+ , Cu 2+ . The effect of temperature was studied and the corresponding thermodynamic parameters (Δ G , Δ H , and Δ S ) were derived and discussed.
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