Startseite Potentiometric and thermodynamic studies of 3-methyl-1-phenyl-{p-[N-(pyrimidin-2-yl)-sulfamoyl]phenylazo}-2-pyrazolin-5-one and its metal complexes
Artikel
Lizenziert
Nicht lizenziert Erfordert eine Authentifizierung

Potentiometric and thermodynamic studies of 3-methyl-1-phenyl-{p-[N-(pyrimidin-2-yl)-sulfamoyl]phenylazo}-2-pyrazolin-5-one and its metal complexes

  • A. Fouda EMAIL logo , A. Al-Sarawy und E. El-Katori
Veröffentlicht/Copyright: 1. Februar 2006
Veröffentlichen auch Sie bei De Gruyter Brill
Informationen für Autor*innen
Chemical Papers
Aus der Zeitschrift Chemical Papers Band 60 Heft 1

Abstract

The dissociation constants of 3-methyl-1-phenyl-{p-[N-(pyrimidin-2-yl)sulfamoyl]phenylazo}-2-pyrazolin-5-one and metal-ligand stability constants of its complexes with some transition metal ions have been determined potentiometrically in 0.1 M-KCl and ethanol—water mixture (30 vol. %). The order of the stability constants of the formed complexes increases in the sequence Mn2+, Co2+, Ni2+, Cu2+, La3+, Hf3+, UO22+, Zr4+. The effect of temperature was studied and the corresponding thermodynamic parameters (ΔG, ΔH, and ΔS) were derived and discussed. The dissociation process is nonspontaneous, endothermic, and entropically unfavourable. The formation of the metal complexes was found to be spontaneous, exothermic, and entropically favourable.

[1] Willey, R. H. and Willey, P., Pyrazolones, Pyrazolidones, and Derivatives. Wiley, New York, 1964. Suche in Google Scholar

[2] Foth, B., Cancer Res. 32, 804 (1972). Suche in Google Scholar

[3] Savvin, S. B. and Gureva, R. F., Talanta 34, 87 (1987). http://dx.doi.org/10.1016/0039-9140(87)80012-710.1016/0039-9140(87)80012-7Suche in Google Scholar

[4] El-Bindary, A. A., El-Sonbati, A. Z., and Kera, H. M., Can. J. Chem. 77, 1305 (1999). http://dx.doi.org/10.1139/cjc-77-7-130510.1139/cjc-77-7-1305Suche in Google Scholar

[5] El-Sonbati, A. Z., El-Bindary, A. A., El-Mosalamy, E. H., and El-Santawy, E. M., Chem. Pap. 56, 299 (2002). Suche in Google Scholar

[6] Al-Sarawy, A. A., Chem. Pap. 58, 109 (2004). Suche in Google Scholar

[7] Mubarak, A. T., J. Solution Chem. 33, 149 (2004). http://dx.doi.org/10.1023/B:JOSL.0000030282.00934.9110.1023/B:JOSL.0000030282.00934.91Suche in Google Scholar

[8] Irving, H. M. and Rossotti, H. S., J. Chem. Soc. 1954, 2904. 10.1039/jr9540002904Suche in Google Scholar

[9] Irving, H. M. and Rossotti, H. S., J. Chem. Soc. 1953, 3397. 10.1039/jr9530003397Suche in Google Scholar

[10] Rossotti, F. J. C. and Rossotti, H. S., Acta Chem. Scand. 9, 1166 (1955). http://dx.doi.org/10.3891/acta.chem.scand.09-116610.3891/acta.chem.scand.09-1166Suche in Google Scholar

[11] Beck, M. T. and Nagybal, I., Chemistry of Complex Equilibrium. Wiley, New York, 1990. Suche in Google Scholar

[12] Sanyal, P. and Senguota, G. P., J. Ind. Chem. Soc. 67, 342 (1990). Suche in Google Scholar

[13] Athawale, V. D. and Nerkar, S. S., Monatsh: Chem. 131, 267 (2000). http://dx.doi.org/10.1007/s00706007010210.1007/s007060070102Suche in Google Scholar

[14] Ibanez, G. A. and Escandar, G. M., Polyhedron 17, 4433 (1998). http://dx.doi.org/10.1016/S0277-5387(98)00249-610.1016/S0277-5387(98)00249-6Suche in Google Scholar

[15] El-Sonbati, A. Z., El-Bindary, A. A., Shoair, A. F., and Youns, R. M., Chem. Pharm. Bull. Jpn. 49, 1308 (2001). http://dx.doi.org/10.1248/cpb.49.130810.1248/cpb.49.1308Suche in Google Scholar PubMed

[16] El-Sonbati, A. Z., El-Bindary, A. A., and Ahmed, R. M., J. Solution Chem. 32, 617 (2003). http://dx.doi.org/10.1023/A:102639230611410.1023/A:1026392306114Suche in Google Scholar

[17] Al-Sarawy, A. A., El-Bindary, A. A., El-Sonbati, A. Z., and Omar, T. Y., Chem. Pap. 59, 261 (2005). Suche in Google Scholar

[18] El-Bindary, A. A., El-Sonbati, A. Z., El-Mosalamy, E. H., and Ahmed, R. M., Chem. Pap. 57, 255 (2003). Suche in Google Scholar

[19] Jeffery, G. H., Bassett, J., Deney, R. C., and Vogel, A. I., Textbook of Quantitative Chemical Analysis. 5th Edition. Longman, London, 1989. Suche in Google Scholar

[20] van Uitert, L. G. and Hass, C. G., J. Am. Chem. Soc. 75, 451 (1953). http://dx.doi.org/10.1021/ja01098a05710.1021/ja01098a057Suche in Google Scholar

Published Online: 2006-2-1
Published in Print: 2006-2-1

© 2006 Institute of Chemistry, Slovak Academy of Sciences

Artikel in diesem Heft

  1. Carbon dioxide production in the oscillating Belousov—Zhabotinsky reaction with oxalic acid
  2. Potentiometric and thermodynamic studies of 3-methyl-1-phenyl-{p-[N-(pyrimidin-2-yl)-sulfamoyl]phenylazo}-2-pyrazolin-5-one and its metal complexes
  3. Spectral and electrochemical study of coordination molecules Cu4OX6L4: 3-Methylpyridine and 4-Methylpyridine Cu4OBrnCl(6−n)L4 complexes
  4. Anodic stripping voltammetric determination of lead and cadmium in soil extracts
  5. Gold and silver determination in Waters by SPHERON® Thiol 1000 preconcentration and ETAAS
  6. Syntheses, geometry optimization, and electronic structure of N-and C-substituted benzonaphthyridines
  7. Synthesis, spectral description, and lipophilicity parameters determination of phenylcarbamic acid derivatives with integrated N-phenylpiperazine moiety in the structure
  8. New methods in synthesis of acetylcholinesterase reactivators and evaluation of their potency to reactivate cyclosarin-inhibited AChE
  9. Furan-containing thiacyanine analogs and their antimicrobial activity
  10. Synthesis and biological activity of new 1,3,4-thiadiazole derivatives
  11. Synthesis and identification of immunogen medroxyprogesterone acetate residues in edible foods and preparation of the Antisera
  12. Synthesis and characterization of oligosalicylaldehyde-based epoxy resins
  13. Extracellular polysaccharides produced by acapsular mutant of Cryptococcus laurentii
  14. Liquid chromatography of synthetic polymers under limiting conditions of insolubility. I. Principle of the method
  15. Transport velocities of different particulate materials in pneumatic conveying
  16. Nitrous oxide emissions from waste incineration
https://doi.org/10.2478/s11696-006-0002-3

Artikel in diesem Heft

  1. Carbon dioxide production in the oscillating Belousov—Zhabotinsky reaction with oxalic acid
  2. Potentiometric and thermodynamic studies of 3-methyl-1-phenyl-{p-[N-(pyrimidin-2-yl)-sulfamoyl]phenylazo}-2-pyrazolin-5-one and its metal complexes
  3. Spectral and electrochemical study of coordination molecules Cu4OX6L4: 3-Methylpyridine and 4-Methylpyridine Cu4OBrnCl(6−n)L4 complexes
  4. Anodic stripping voltammetric determination of lead and cadmium in soil extracts
  5. Gold and silver determination in Waters by SPHERON® Thiol 1000 preconcentration and ETAAS
  6. Syntheses, geometry optimization, and electronic structure of N-and C-substituted benzonaphthyridines
  7. Synthesis, spectral description, and lipophilicity parameters determination of phenylcarbamic acid derivatives with integrated N-phenylpiperazine moiety in the structure
  8. New methods in synthesis of acetylcholinesterase reactivators and evaluation of their potency to reactivate cyclosarin-inhibited AChE
  9. Furan-containing thiacyanine analogs and their antimicrobial activity
  10. Synthesis and biological activity of new 1,3,4-thiadiazole derivatives
  11. Synthesis and identification of immunogen medroxyprogesterone acetate residues in edible foods and preparation of the Antisera
  12. Synthesis and characterization of oligosalicylaldehyde-based epoxy resins
  13. Extracellular polysaccharides produced by acapsular mutant of Cryptococcus laurentii
  14. Liquid chromatography of synthetic polymers under limiting conditions of insolubility. I. Principle of the method
  15. Transport velocities of different particulate materials in pneumatic conveying
  16. Nitrous oxide emissions from waste incineration
Jetzt anmelden und 20% sparen
Institutioneller Zugang
Wie funktioniert Authentifizierung?
Haben Sie eine Idee, wie wir unsere Website verbessern können?
Bitte schreiben Sie uns.
© 2025 De Gruyter Brill
Heruntergeladen am 27.11.2025 von https://www.degruyterbrill.com/document/doi/10.2478/s11696-006-0002-3/pdf?lang=de
Button zum nach oben scrollen