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Vol. 34 No. 10 (2022): Vol 34 Issue 10, 2022

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4f-4f Transition Spectra of the Interaction of Pr(III) with L-Valine in Solution: Kinetics and Thermodynamic Studies

https://doi.org/10.14233/ajchem.2022.23911
Juliana Sanchu
Department of Chemistry, Nagaland University, Lumami-798627, India
Mhasiriekho Ziekhru
Department of Chemistry, Nagaland University, Lumami-798627, India
Zevivonu Thakro
Department of Chemistry, Nagaland University, Lumami-798627, India
M.I. Devi
Department of Chemistry, Nagaland University, Lumami-798627, India

Corresponding Author(s) : M.I. Devi

cam_indira@yahoo.co.in

Asian Journal of Chemistry, Vol. 34 No. 10 (2022): Vol 34 Issue 10, 2022

Abstract

The 4f-4f transition spectra for the interaction of L-valine with praseodymium(III) in aqueous organic solvents (50% v/v) of CH3CN, DMF, CH3OH and C4H8O2 is investigated. The variation in the theoretically computed values of the absorption spectral parameters viz. energy interaction parameters-spin-orbit interaction (ξ4f), Slater-Condon (Fk), nephelauxetic ratio (β), Racah energy (Ek), bonding parameter (b1/2) and percentage covalency (δ) explained the nature of complexation. The values of evaluated intensity parameters viz. oscillator strengths (P) and Judd-Ofelt parameters (Ωt) (t = 2, 4, 6) were analyzed to see the possibility of outer and inner sphere coordination of Pr(III) with L-valine. Further, reaction pathways for Pr(III) with L-valine and consequently its thermodynamic parameters have been evaluated through 4f-4f transition spectra in the DMF solvent.

Keywords

Oscillator strength Nephelauxetic effect Pr(III) Judd-Ofelt Thermodynamic parameters
Sanchu, J., Ziekhru, M., Thakro, Z., & Devi, M. (2022). 4f-4f Transition Spectra of the Interaction of Pr(III) with L-Valine in Solution: Kinetics and Thermodynamic Studies. Asian Journal of Chemistry, 34(10), 2688–2696. https://doi.org/10.14233/ajchem.2022.23911
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