European Journal of Chemistry 2011, 2(4), 489-494 | doi: https://doi.org/10.5155/eurjchem.2.4.489-494.440 | Get rights and content






  OPEN ACCESS | PEER-REVIEWED | RESEARCH ARTICLE | DOWNLOAD PDF | VIEW FULL-TEXT PDF | TOTAL VIEWS

Studies on ion-pairing effects of the kinetics of aquation of bromopentaammine cobalt(III) complex in malonate media


Farah Samih Zeitouni (1) , Gehan Moustafa El-Subruiti (2) , Ghassan Omar Younes (3) , Mohammad Fawzi Amira (4,*)

(1) Chemistry Department, Faculty of Science, Beirut Arab University, Riad El-Solh, Beirut-11-5020, Lebanon
(2) Chemistry Department, Faculty of Science, Alexandria University, Ibrahimia, Alexandria-21321, Egypt
(3) Chemistry Department, Faculty of Science, Beirut Arab University, Riad El-Solh, Beirut-11-5020, Lebanon
(4) Chemistry Department, Faculty of Science, Alexandria University, Ibrahimia, Alexandria-21321, Egypt
(*) Corresponding Author

Received: 13 Apr 2011 | Revised: 27 Jun 2011 | Accepted: 05 Jul 2011 | Published: 31 Dec 2011 | Issue Date: December 2011

Abstract


The aquation of bromopentaamminecobalt(III) ion in the presence of ion-pairing malonate anion in mixed solvent media of water with tert-butanol (10%-50%) v/v have been investigated spectrophotometrically at different temperatures (30-60 oC). Nonlinear plots of Log (kip) ion-pair rate constants against the reciprocal of the dielectric constant D, Log of water concentration and Grunwald-Winstein Y values were found. The thermodynamic and extrathermodynamic analyses of the kinetic data have been discussed in terms of solvent effect on the ion-pair aquation reactions. The obtained isokinetic temperatures of these systems indicate the existence of compensation effect arising from solute-solvent interaction. The extrema found in the change of ∆Hip* and ∆Sip*with the mole fraction of the co-solvent can be attributed to the change of the physical properties of the solvent-water mixture with the solvent structure. Application of a free energy cycle is performed to compare between the stability of the initial and the transition state of the complex. However, small changes in ∆Gip*with the mole fraction of the co-solvent was found, indicating a compensating effects between ∆Hip* and ∆Sip*

2_4_489_494_800


Keywords


Ion-pair; Aquation; Solvent effect; Cobalt(III) complex; Dicarboxylic acid; Tert-butanol

Full Text:

PDF /    /


DOI: 10.5155/eurjchem.2.4.489-494.440

Links for Article


| | | | | | |

| | | | | | |

| |

Related Articles




Article Metrics

This Abstract was viewed 691 times | PDF Article downloaded 245 times

Funding information


Beirut Arab University, Faculty of Science, Chemistry Department, Beirut-11-5020, Lebanon

Citations

/


[1]. Farah Samih Zeitouni, Mohammad Fawzi Amira, Gehan Moustafa El-Subruiti, Ghassan Omar Younes
Comparison of the leaving groups during the study of the aquation of halopentaammine cobalt(III) complex in tartarate at different percentage of tert-butanol
European Journal of Chemistry  9(3), 228, 2018
DOI: 10.5155/eurjchem.9.3.228-235.1728
/


[2]. Farah Samih Zeitouni, Jinane Kamal Chaaban, Ramzi Kassem Hamed
Kinetic studies of ion-pairing effects on the aquation of chloropentaammine cobalt(III) complex in different dicarboxylate media at 30% of tert-butanol
European Journal of Chemistry  8(3), 273, 2017
DOI: 10.5155/eurjchem.8.3.273-278.1609
/


References

[1]. Shaban, N. Z.; El-Subruiti, G. M. Alex. J. Pharm. Sci. 1992, 6(1), 79-82.

[2]. Shaban, N. Z.; El-Subruiti, G. M. J. Pest. Control and Environ. Sci. 1990, 2, 91-102.

[3]. Belkov, V. M.; Krynetskaya, N. F.; Shabarova, Z. A.; Novodarova, G. N.; Volpin, M. E. Russ. Chem. Bull, 1996, 45(8), 2008-2011.
http://dx.doi.org/10.1007/BF01457797

[4]. Naik, N. C.; Nanda, R. K. J. Inorg. Nucl. Chem. 1974, 36, 3793-3800.
http://dx.doi.org/10.1016/0022-1902(74)80167-3

[5]. Naik, N. C.; Nanda, R. K. J. Indian Chem. Soc. 1976, 53(2), 149-156.

[6]. Jones, T. P.; Phillips, J. K. J. Chem. Soc. 1968, 674-679.

[7]. Amira, M. F.; Abdel-Halim, F. M.; El-Semongy M. M. J. Electro. Chem. Soc. India 1982, 31, 597-605.

[8]. El-Naggar, G. A.; Seleim, S. M.; Zaghloul, A. A.; Amira, M. F. Z. Phys. Chem. 2002, 216, 1239-1260.

[9]. Smith, D.; Amira, M. F.; Abdullah, P. B.; Monk, C. B. J. Chem. Soc. Dalton Trans. 1983, 2, 337-342.
http://dx.doi.org/10.1039/dt9830000337

[10]. Amira, M. F.; Abdel-Halim, F. M.; El-Semongy, M. M. J. Indian Chem. Soc. 1983, 60, 347-353.

[11]. Wyatt, P. A. H.; Davies, C. W. Trans. Faraday Soc. 1949, 45, 774-780.
http://dx.doi.org/10.1039/tf9494500774

[12]. Hunt, H. R.; Taube, H. J. Am. Chem. Soc. 1958, 80, 2642-2646.
http://dx.doi.org/10.1021/ja01544a011

[13]. Hynes, A.; Yanowski, L. K.; Shiller, M. J. Am. Chem. Soc. 1938, 60, 3053-3054.
http://dx.doi.org/10.1021/ja01279a064

[14]. Tommila, E.; Pakkala, E.; Virtanen, W.; Erra, A.; Varila, S. Ann. Acad. Sci. 1959, AII, 91-93.

[15]. Elgy, C. N.; Wells, C. F. J. Chem. Soc. Dalton Trans. 1982, 8, 1617-1620.
http://dx.doi.org/10.1039/dt9820001617

[16]. Zaghloul, A. A. Egypt J. Chem. 1991, 34, 529-536.

[17]. Reichardt, C. Solvent and solvent effects in organic chemistry, 3rd Edition, VCH, Federal Republic of Germany, 2003.

[18]. Akerlof, G. J. Amer. Chem. Soc. 1932, 54, 4125-4139.
http://dx.doi.org/10.1021/ja01350a001

[19]. El-Subruiti, G. M.; Younes, G. O.; Zeitouni, F. S.; Amira, M. F. Int. J. Chem. Kinet. 2004, 36, 494-499.
http://dx.doi.org/10.1002/kin.20021

[20]. El-Subruiti, G. M.; Younes, G. O.; Zeitouni, F. S.; Amira, M. F. Int. J. Chem. Kinet. 2008, 40, 416-422.
http://dx.doi.org/10.1002/kin.20324

[21]. Laidler, K. J.; Landskroener, P. A. Trans. Faraday Soc. 1956, 52, 200-210.
http://dx.doi.org/10.1039/tf9565200200

[22]. Elsemongy, M. M; Amira M. F. J. Indian Chem. Soc. 1980, 57, 506-511.

[23]. Elgy, C. N.; Wells, C. F. J. Chem. Soc. Faraday Trans. 1983, 79, 2367-2376.
http://dx.doi.org/10.1039/f19837902367

[24]. Eid, A. E.; Wells, C. F. J. Chem. Soc. Faraday Trans. 1981, 1, 77, 1621-1628.

[25]. Groves, G. S.; Wells, C. F. J. Chem. Soc. Faraday Trans. 1982, 1, 78, 619-626.

[26]. Elgy, C. N.; Wells, C. F. J. Chem. Soc. Dalton Trans. I 1980, 12, 2405-2409.

[27]. Jones, W. E.; Casey, L. R.; Swaddle, T. W. Can. J. Chem. 1972, 50, 2739-2746.
http://dx.doi.org/10.1139/v72-440

[28]. Palmer, D. A.; Kelm, H. Coord. Chem. Rev. 1981, 36, 89-94.
http://dx.doi.org/10.1016/S0010-8545(00)80506-8

[29]. Wells, C. F. J. Chem. Soc., Faraday Trans. 1975, 71, 1868-1875.
http://dx.doi.org/10.1039/f19757101868

[30]. Sidahmed, I. M.; Wells, C. F. J. Chem. Soc. Dalton Trans. 1981, 10, 2034-2038.
http://dx.doi.org/10.1039/dt9810002034

[31]. El-Subruiti, G. M. J. Solution Chem. 2002, 31(5), 415-423.
http://dx.doi.org/10.1023/A:1015863416229

[32]. El-Subruiti, G. M.; Fathalla, M. F.; El-Marasi, Y. R. Int. J. Chem. Kinet. 2011, 43, 230-237.
http://dx.doi.org/10.1002/kin.20535

[33]. Younes, G. O.; Jaber, M. M.; El-Subruiti, G. M. Prog. React. Kinet. Mec. 2011, 36, 73-82.
http://dx.doi.org/10.3184/146867810X12910391510755

[34]. Fathalla, M. F.; El-Subruiti, G. M.; El-Marasi Y. R. Prog. React. Kinet. Mec. 2009, 14, 169-183.

How to cite


Zeitouni, F.; El-Subruiti, G.; Younes, G.; Amira, M. Eur. J. Chem. 2011, 2(4), 489-494. doi:10.5155/eurjchem.2.4.489-494.440
Zeitouni, F.; El-Subruiti, G.; Younes, G.; Amira, M. Studies on ion-pairing effects of the kinetics of aquation of bromopentaammine cobalt(III) complex in malonate media. Eur. J. Chem. 2011, 2(4), 489-494. doi:10.5155/eurjchem.2.4.489-494.440
Zeitouni, F., El-Subruiti, G., Younes, G., & Amira, M. (2011). Studies on ion-pairing effects of the kinetics of aquation of bromopentaammine cobalt(III) complex in malonate media. European Journal of Chemistry, 2(4), 489-494. doi:10.5155/eurjchem.2.4.489-494.440
Zeitouni, Farah, Gehan Moustafa El-Subruiti, Ghassan Omar Younes, & Mohammad Fawzi Amira. "Studies on ion-pairing effects of the kinetics of aquation of bromopentaammine cobalt(III) complex in malonate media." European Journal of Chemistry [Online], 2.4 (2011): 489-494. Web. 5 Dec. 2020
Zeitouni, Farah, El-Subruiti, Gehan, Younes, Ghassan, AND Amira, Mohammad. "Studies on ion-pairing effects of the kinetics of aquation of bromopentaammine cobalt(III) complex in malonate media" European Journal of Chemistry [Online], Volume 2 Number 4 (31 December 2011)

The other citation formats (EndNote | Reference Manager | ProCite | BibTeX | RefWorks) for this article can be found online at: How to cite item


DOI Link: https://doi.org/10.5155/eurjchem.2.4.489-494.440

| | | | | | | |

| | | | | |

Save to Zotero Save to Mendeley



European Journal of Chemistry 2011, 2(4), 489-494 | doi: https://doi.org/10.5155/eurjchem.2.4.489-494.440 | Get rights and content

Refbacks

  • There are currently no refbacks.




Copyright (c)




© Copyright 2010 - 2020  Atlanta Publishing House LLC All Right Reserved.

The opinions expressed in all articles published in European Journal of Chemistry are those of the specific author(s), and do not necessarily reflect the views of Atlanta Publishing House LLC, or European Journal of Chemistry, or any of its employees.

Copyright 2010-2020 Atlanta Publishing House LLC. All rights reserved. This site is owned and operated by Atlanta Publishing House LLC whose registered office is 2850 Smith Ridge Trce Peachtree Cor GA 30071-2636, USA. Registered in USA.