The Influence of Solvent on Complex Formation of Crown Ether with Tetraphenylphosphonium Chloride
DOI:
https://doi.org/10.6000/1929-5030.2015.04.02.5Keywords:
Crown ether, tetraphenylphosphonium chloride, micro calorimeter, equilibrium constant, solvationAbstract
The host guest interactions of crown ether (18-C-6) with tetraphenylphosphonium chloride (TPPC) were studied in different solvents at 303.15 K. The values of reaction enthalpies, ΔH0, and equilibrium constant, K, have been calculated and the results show that solvation of tetraphenylphosphonium ion (Ph4P+) is not very important. Because the cavity of the 18-C-6 is too small to completely accommodate large Ph4P+ ion. Thus, the interactions between the cation and the oxygen donor atoms of the ligand decrease, the large cation is surrounded by large organic moieties which interact more strongly with the organic environment and therefore it will not have tendency to form complex in non-aqueous solvents.
References
[1] Tripathi AD. Heat capacities of tetra phenyl phosphonium chloride with ethanol, methanol, acetonitrile and water. Fluid Phase Equilibria 2010; 293: 205-8. http://dx.doi.org/10.1016/j.fluid.2010.03.017
[2] Pathak G, Tripathi AD, Pradhan S. The excess molar enthalpies of mixing of 1,1,2,2-tetrachloroethane with ace tone, n-dibutyl ether, acetonitrile and dimethylsulphoxide. Thermochim Acta 1992; 197: 329-33. http://dx.doi.org/10.1016/0040-6031(92)85031-P
[3] Nath J, Tripathi AD. Binary systems of 1,1,2,2- tetrachloroethane with benzene, toluene, p-xylene, acetone and cyclohexane. 1. Excess volumes, ultrasonic velocities, and adiabatic compre ssibilities at 298.15 and 308.15 K. J Chem Engg Data 1983; 28: 263-6. http://dx.doi.org/10.1021/je00032a038
[4] Izatt RM, Pawlak K, Bradshaw JS, Bruening RL. Thermodynamic and kinetic data for macrocycle interactions with cations and anions. Chem Rev 1991; 91: 1721-2085. http://dx.doi.org/10.1021/cr00008a003
[5] Buschmann HJ. The influence of acetonitrile on complex formation of crown ethers containing different donor atoms. J Sol Chem 1988; 17: 277-86. http://dx.doi.org/10.1007/BF00646180
[6] Boer JAA de, Reinhoudt DN, Harkema S, van Hummel GJ, Jong FJ de. Thermodynamic constants of complexes of crown ethers and uncharged molecules and x-ray structure of the 18-crown-6. (MeNO2)2 complex. J Am Chem Soc 1982; 104: 4073-6. http://dx.doi.org/10.1021/ja00379a006
Downloads
Published
How to Cite
Issue
Section
License
Policy for Journals/Articles with Open Access
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are permitted and encouraged to post links to their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work
Policy for Journals / Manuscript with Paid Access
Authors who publish with this journal agree to the following terms:
- Publisher retain copyright .
- Authors are permitted and encouraged to post links to their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work .