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Potentiometric and Conductometric Studies on the Complexes of Some Transition Metals with Rhodanine Azosulfonamide Derivatives. XI
Mubarak, A. T., El-Sonbati, A. Z. and El-Bindary, A. A. Potentiometric and Conductometric Studies on the Complexes of Some Transition Metals with Rhodanine Azosulfonamide Derivatives. XI Chemical Papers, Vol.58, No. 5, 2004, 320-323
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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 |
n585a320.pdf
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585a320.pdf |
application/pdf |
111.90KB |
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| Author(s) |
Mubarak, A. T.
El-Sonbati, A. Z.
El-Bindary, A. A.
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| Title |
Potentiometric and Conductometric Studies on the Complexes of Some Transition Metals with Rhodanine Azosulfonamide Derivatives. XI
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| Journal name |
Chemical Papers
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| Publication date |
2004
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| Year available |
2004
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| Volume number |
58
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| Issue number |
5
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| ISSN |
0366-6352
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| Start page |
320
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| End page |
323
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| Place of publication |
Poland
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| Publisher |
Versita
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| Collection year |
2004
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| Language |
english
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| Subject |
250000 Chemical Sciences
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| Abstract/Summary |
Stability constants of bivalent (Mn2+, Co2+, Ni2+, and Cu2+) metal ion complexes with rhodanine azosulfonamide derivatives have been determined potentiometrically in 0.1 M-KCl and 30 vol. % ethanol—water mixture. The stability constants of the formed complexes increase in the order Mn2+, Co2+, Ni2+, Cu2+. The influence of substituents on the stability of the complexes was examined on the basis of electron repelling property of the substituent. The effect of temperature on the stability of the complexes formed was studied and the corresponding thermodynamic quantities (ΔG, ΔH, and ΔS) were derived and discussed. The stoichiometries of these complexes were determined conductometrically and indicated the formation of 1:1 and 1:2 (n(metal):n(ligand)) complexes.
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