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International Journal of Spectroscopy
Volume 2009 (2009), Article ID 784305, 9 pages
Research Article

Calculation and Comparison of Energy Interaction and Intensity Parameters for the Interaction of Nd(III) with DL-Valine, DL-Alanine and -Alanine in Presence and Absence of / in Aqueous and Different Aquated Organic Solvents Using 4f-4f Transition Spectra as Probe

1Department of Chemistry, Manipur University, Canchipur, Imphal 795 003, India
2Department of Chemistry, Mizoram University, Aizawl 796 009, India

Received 17 May 2009; Revised 17 August 2009; Accepted 7 September 2009

Academic Editor: Glen R. Loppnow

Copyright © 2009 H. Debecca Devi et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Absorption difference and comparative absorption spectrophotometric studies involving 4f-4f transitions of Nd(III) and different amino acids: DL-valine, DL-alanine, and -alanine in presence and absence of Ca(II) and Zn(II) in aqueous and different aquated organic solvents have been carried out. Variations in the spectral energy parameters: Slater-Condon () factor, Racah (), Lande factor (), nephelauxetic ratio (), bonding (), percentage covalency () are calculated to explore the mode of interaction of Nd(III) with different amino acids: DL-valine, DL-alanine, and -alanine. The values of experimentally calculated oscillator strength (P) and computed values of Judd-Ofelt electric dipole intensity parameters, ( = 2,4,6), are also determined for different 4f-4f transitions. The variation in the values of P and parameters explicitly shows the relative sensitivities of the 4f-4f transitions as well as the specific correlation between relative intensities, ligand structures, and nature of Nd(III)-ligand interaction.