Effect of Binary Solvent Mixtures on Ion-Pair Formation and Solvation Dynamics

Dr. Rakesh Ranjan Raj

doi:10.32628/IJSRST241161128

Authors

Dr. Rakesh Ranjan Raj Ph. D in Chemistry (from J.P. University, Chapra), Currently working as Excise Chemical Examiner Tirhut Division Muzaffarpur, Bihar, India Author

DOI:

https://doi.org/10.32628/IJSRST241161128

Keywords:

Raman Spectroscopy, Dimethylformamide (DMF), Correlation of Dielectric and Hydrogen Bonding, Solvation Dynamics, Binary Solvent Mixtures, Ion-Pair Formation

Abstract

This study determines the impact of binary solvent mixtures, particularly water and Dimethylformamide (DMF), on the formation of the ion-pair and dynamic solvation. The ion interaction dynamics of halides and nitrates with M²⁺ and M³⁺ have been assessed through conductivity studies and also ion-pair stability in addition to assessing solvation thermodynamics by varying the temperature. Experiments along with theoretical understanding lead the paper to highlight the critical modulatory effect of solvent polarity, hydrogen bonding, and viscosity of the medium affecting ion-ion interactions and finally, structures of solvation.

Downloads

Download data is not yet available.

References

Bjerrum, N. (1926). On the theory of electrolytes. Kgl. Danske Videnskab. Selskab, Math.-fys. Medd., 7, 1-48.(Original source on the concept of ion pairs)

Kraus, C. A., & Fuoss, R. M. (1933). Properties of electrolytic solutions. II. Ion association in solutions of tetraethylammonium iodide in benzene. Journal of the American Chemical Society, 55(11), 4381-4390. https://doi.org/10.1021/ja01338a022 DOI: https://doi.org/10.1021/ja01338a022

Kumar, R., Singh, A., & Das, A. (2020). Molecular dynamics and solvation structures of ions in binary solvent mixtures: Water-DMF systems. Journal of Molecular Liquids, 310, 113065. https://doi.org/10.1016/j.molliq.2020.113065 DOI: https://doi.org/10.1016/j.molliq.2020.113065

Conway, B. E. (2000). Electrochemical properties of aqueous and nonaqueous solvents: Roles of hydrogen bonding and solvation dynamics. Journal of Electroanalytical Chemistry, 500(1-2), 2-14. https://doi.org/10.1016/S0022-0728(00)00254-8

Marcus, Y. (2009). Effect of mixed solvents on solvation dynamics. Journal of Solution Chemistry, 38(4), 543-563. https://doi.org/10.1007/s10953-009-9388-8

Chandra, A., Singh, P., & Prakash, V. (2015). Conductivity studies in binary mixtures: Water-DMF systems with nitrates. Electrochimica Acta, 174, 204-211. https://doi.org/10.1016/j.electacta.2015.05.001 DOI: https://doi.org/10.1016/j.electacta.2015.05.001

Shah, P., Kumar, M., & Basu, S. (2019). Viscosity and conductivity trends in solvent mixtures at variable temperatures. Physical Chemistry Chemical Physics, 21(5), 2367-2375. https://doi.org/10.1039/C8CP06875J

Liang, X., Tang, W., & Yang, Q. (2017). Raman spectroscopic studies of hydrogen bonding in water-DMF mixtures. Journal of Raman Spectroscopy, 48(2), 301-308. https://doi.org/10.1002/jrs.5076 DOI: https://doi.org/10.1002/jrs.5076

Smith, E. L., Wilkes, J. S., & Abbott, A. P. (2018). UV-Vis spectroscopic investigation of solvation structures in ionic solutions. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 200, 29-37. https://doi.org/10.1016/j.saa.2018.03.016 DOI: https://doi.org/10.1016/j.saa.2018.03.016

Zhang, X., Luo, L., & Li, Y. (2020). Radial distribution function analysis of solvation shell structures in binary solvents. Chemical Physics Letters, 738, 136939. https://doi.org/10.1016/j.cplett.2020.136939

Patel, R., Singh, H., & Sharma, A. (2021). Thermodynamic modeling of ion pair stability in solvent mixtures. The Journal of Chemical Physics, 154(8), 084505. https://doi.org/10.1063/5.0040835 DOI: https://doi.org/10.1063/5.0040835