Abstract
The absorption spectra of trivalent neodymium ion with 1,2,4-1H-triazole and 1,2,3-benzotriazole in absence and presence of calcium(II) ion in aqueous and some selected different aquated organic solvents have been recorded in the visible and near infrared regions. From the data available in the absorption spectra, various spectroscopic parameters such as Slator–Condon ( F k ), Lande spin–orbit coupling constant ( ξ 4f), nephelauxetic ratio ( β), bonding parameter ( b 1/2), percent covalency ( δ), oscillator strength ( P) and Judd–Ofelt intensity ( T λ ) parameters have been evaluated. The Judd–Ofelt intensity, T λ ( λ = 2, 4, 6) parameters are utilized in evaluating the P cal from various excited states of trivalent neodymium ions and ratifying as an inner sphere complexations.
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