European Journal of Chemistry 2011, 2(3), 420-432. doi:10.5155/eurjchem.2.3.420-432.407

Solvatochromism and potentiometic studies of some active nitroso- and nitroso-azo- compounds


Mamdouh Saad Masoud (1,*) , Ekram Abd El-Moniem Khalil (2) , Saeda Abou El-Thana Abou El Enein (3) , Hesham Mostafa Kamel (4)

(1) Chemistry Department, Faculty of Science, Alexandria University, Alexandria, 21547, Egypt
(2) Chemistry Department, Faculty of Science, Alexandria University, Alexandria, 21547, Egypt
(3) Chemistry Department, Faculty of Science, Minufiya University, Shebin El-Kom, 32511, Egypt
(4) Chemistry Department, Faculty of Science, Alexandria University, Alexandria, 21547, Egypt
(*) Corresponding Author

Received: 16 Feb 2011, Accepted: 16 Apr 2011, Published: 30 Sep 2011

Abstract


The stability studies of biologically active 2,4-dinitrosoresorcinol, o-carboxy phenylazo-dinitrosoresorcinol, N,N`-bis-[4,4`-(1,3-diphenyltriazine)]-diacetamide, 2-amino-6-phenylazo-pyridin-3-ol, 2-amino-3-hydroxy-pyridin-6-ylazo)-benzoic acid, 4-(2-amino-3-hydroxy-pyridin-6-ylazo)-benzoic acid ethyl ester and N-[4-(2-amino-3-hydroxy-pyridin-6-ylazo)-phenyl]-acetamide compounds were studied. The dissociation constants were determined potentiometrically. The thermodynamic parameters of dissociation were evaluated. Regression analysis is applied for correlating the different parameters. The results help to assign the solute-solvent interactions and the solvatochromic potential of the investigated compounds. The electronic character of the substituent and the chemical nature of the solvent are major factors for the observed solvatochromism.

2_3_420_432_800


Keywords


Nitroso; Pyridin-6-ylazo; Triazene; Effect of solvents; Potentiometry; Spectrophotometry

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DOI: 10.5155/eurjchem.2.3.420-432.407

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[1]. Hassan Hasan Hammud, Mohammad Hasan El-Dakdouki, Nada Mohamd Sonji, Kamal Hani Bouhadir
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[2]. Mamdouh S. Masoud, Ahmed M. Ramadan, Amina A. Soayed, Sherif M. S. Ammar
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[3]. Mamdouh S. Masoud, Ahmed M. Ramadan, Ghada M. El-Ashry
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[4]. Mamdouh S. Masoud, Hesham M. Kamel, Alaa E. Ali
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How to cite


Masoud, M.; Khalil, E.; El Enein, S.; Kamel, H. Eur. J. Chem. 2011, 2(3), 420-432. doi:10.5155/eurjchem.2.3.420-432.407
Masoud, M.; Khalil, E.; El Enein, S.; Kamel, H. Solvatochromism and potentiometic studies of some active nitroso- and nitroso-azo- compounds. Eur. J. Chem. 2011, 2(3), 420-432. doi:10.5155/eurjchem.2.3.420-432.407
Masoud, M., Khalil, E., El Enein, S., & Kamel, H. (2011). Solvatochromism and potentiometic studies of some active nitroso- and nitroso-azo- compounds. European Journal of Chemistry, 2(3), 420-432. doi:10.5155/eurjchem.2.3.420-432.407
Masoud, Mamdouh, Ekram Abd El-Moniem Khalil, Saeda Abou El-Thana Abou El Enein, & Hesham Mostafa Kamel. "Solvatochromism and potentiometic studies of some active nitroso- and nitroso-azo- compounds." European Journal of Chemistry [Online], 2.3 (2011): 420-432. Web. 17 Sep. 2019
Masoud, Mamdouh, Khalil, Ekram, El Enein, Saeda, AND Kamel, Hesham. "Solvatochromism and potentiometic studies of some active nitroso- and nitroso-azo- compounds" European Journal of Chemistry [Online], Volume 2 Number 3 (30 September 2011)

DOI Link: https://doi.org/10.5155/eurjchem.2.3.420-432.407

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