Conductance Studies on Complex Formation between CaCl2 and Ampicillin as Ligand in Water and In Methanol Solvent at Different Temperatures

作者: Esam A Gomaa , Elsayed M Abou Elleef , ET Helmy

DOI:

关键词:

摘要: The complexation reactions between the metal cation (Ca2+) and ligand (ampicillin) was studied in water pure MeOH solvent at 293.15, 298.15, 303.15 308.15K by applying conductometric method. Consequently, we will study effect of properties on stoichiometry, selectivity ions various systems thermodynamic parameters complexation. On drawing relation molar conductance ratio to concentrations, different lines are obtained indicating formation 1:1, 2:1 (M:L) stoichiometric complexes. stability constant complexes were from fitting conductivity curves using a computer program. This research focused ligand, ampicillin, with Ca2+ solvent.

参考文章(33)
The Chemistry of β-lactams Blackie Academic & Professional. ,(1992) , 10.1007/978-94-011-2928-2
R Galal, E. Gomaa, M Hamada, Apparent Molal Volumes of Sodium Fluoride in Mixed Aqueous-Ethanol Solvents Avances en Química. ,vol. 5, pp. 117- 121 ,(2010)
Alfred J. Smetana, Alexander I. Popov, On the influence of ionic strength on the equilibrium constant of an ion-molecule reaction The Journal of Chemical Thermodynamics. ,vol. 11, pp. 1145- 1149 ,(1979) , 10.1016/0021-9614(79)90106-X
E.A. Gomaa, M.A. Mousa, A.A. El-Khouly, Association, dissociation and hydrogen bonding of salicylic acid in water—N,N-dimethylformamide mixtures Thermochimica Acta. ,vol. 89, pp. 133- 139 ,(1985) , 10.1016/0040-6031(85)85488-5
James L. Dye, Vincent A. Nicely, A general purpose curve fitting program for class and research use Journal of Chemical Education. ,vol. 48, pp. 443- ,(1971) , 10.1021/ED048P443
Yasuyuki Takeda, Thermodynamic Study for Dibenzo-24-crown-8 Complexes with Alkali Metal Ions in Nonaqueous Solvents Bulletin of the Chemical Society of Japan. ,vol. 56, pp. 3600- 3602 ,(1983) , 10.1246/BCSJ.56.3600
K. M. Tawarah, S. A. Mizyed, A conductance study of the association of alkali cations with 1,13-dibenzo-24-crown-8 in acetonitrile Journal of Solution Chemistry. ,vol. 18, pp. 387- 401 ,(1989) , 10.1007/BF00656776
D.Ph. Zollinger, E. Bulten, A. Christenhusz, M. Bos, W.E. van der Linden, Computerized conductometric determination of stability constants of complexes of crown ethers with alkali metal salts and with neutral molecules in polar solvents Analytica Chimica Acta. ,vol. 198, pp. 207- 222 ,(1987) , 10.1016/S0003-2670(00)85021-7