A Study of Nephelauxetic Ratio of Rare-Earth Complexes (Neodymium) in Different Amino-Acids
Journal Title: International Journal of Physics and Research (IJPR) - Year 2019, Vol 9, Issue 1
Abstract
Among metals, the rare-earth elements form an outstanding and unique group. The element of the first series that is from Cerium to Lutetium (58Ce to 71Lu) which form a part of the sixth period are called lanthanides. These are called rare-earth elements because of the very small amount of it. The Configuration of rare-earths ion is given by (1s22s2 2p63s23p63d104s24p64d105s25p6)4f n5d16s2 and the value of n varies from one to fourteen.Ternary complexes of Neodymium with amino acids that is Arginine, Threonine or Leucine as primary ligand and Urea as secondary ligands are prepared in 1:1:2 ratio. The spectra of these complexes are recorded by UV-VIS spectrophotometer, LABINDIA 3000+. The value of different parameters- Racah parameter (E1, E2, E3), Slater-Condon parameters(F2,F4,F6) and Lande’s parameter are calculated. The effect of various amino acids on the position and intensity has been discussed in terms of bonding parameter. After calculation of these Slater-Condon parameters, Nephelauxetic Ratio is calculated this is directly related to types of bonding.
Authors and Affiliations
Deep mala
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- EP ID EP600761
- DOI 10.24247/ijprjun20191
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A Study of Nephelauxetic Ratio of Rare-Earth Complexes (Neodymium) in Different Amino-Acids
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