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A thermodynamic study of the charge transfer complexes of MV with some macrocyclic hosts

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Abstract

Formation of charge transfer complexes of methyl viologen, MV, and hosts (13) in ethanol were studied using UV–visible spectrophotometry. The stability constants and the thermodynamic parameters of the resulting 1:2 (MV:host ratio) complexes were determined. All charge transfer complexes formed were enthalpy destabilized, but entropy stabilized. The effect of donor atoms, their orientation, the substituents, flexibility and the cavity size of the crown ethers on the formation constants and thermodynamic parameters will be discussed.

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Acknowledgments

The authors would like to acknowledge Yarmouk University for financial support, Projects numbers (5/2007) and (13/2007).

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Correspondence to Shehadeh A. Mizyed.

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Mizyed, S.A., Shehab, M.K. & Marji, D.S. A thermodynamic study of the charge transfer complexes of MV with some macrocyclic hosts. J Incl Phenom Macrocycl Chem 70, 109–113 (2011). https://doi.org/10.1007/s10847-010-9867-4

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  • DOI: https://doi.org/10.1007/s10847-010-9867-4

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