Abstract
Abstract A comparative study concerning absorption and emission spectra of the perchlorate, hexafluorophosphate, nitrate and isothiocyanate of neodymium and europium adducts with N, N-dimethyl-diphenylphosphinamide (DDPA) was realized. From the absorption spectra the parameters β,b 1/2 and Δ and the oscillator strengths, P, were determined for the neodymium adducts, as were the emission spectra of the corresponding europium compounds. Suggestions concerning symmetry and geometry of the adducts, as were the emission spectra of the corresponding europium compounds. Suggestions concerning symmetry and geometry of the adducts are given.
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