Electronic spectral study of amino-acid complexes of Nd(III)

Abstract

Neodymium(III) complexes with histidine and diols (ethancdiol, prop-1,2-diol. but-2,3-diol, 2-butene-1,4-cliol, pent-1,5-diol, and hex-1,6-diol) of the type MAB, MA2B, and MAB2 have been synthesized and characterised. The values of Slater–Condon (Fk), Lande (ζ4f) spin orbital interactions, oscillator strength (P). and Judd–Ofelt (Tλ) intensity parameters have been calculated. Using these parameters, energies and intensities often levels in all the complexes in the region 360–920 nm have been computed. The agreement between the computed and experimental values is good. Using F2 values, the nephelauxetic ratio β, and bonding parameter b1/2 have been calculated, these infer the incidence of some covalent character in these complexes.