Abstract
Luminophores POCl3-SbCl5-Nd3+ with Nd concentration of up to 0.8 M and Nd3+ luminescence lifetime of up to 220 μs and POCl3-SbCl5-235UO 2+2 with uranyl concentration of up to 0.16 M were prepared. It was found that stable liquids POCl3-SbCl5-Nd3+ and POCl3-SbCl5-235UO 2+2 can be obtained when salt crystal hydrates are used or water is added to anhydrous Nd and U(VI) compounds. The SbCl5 content should be 1 ≤ [SbCl5]/[Nd3+] ≤ 2 for the POCl3-SbCl5-Nd3+ system and [SbCl5]/[UO 2+2 ] > 3 for the POCl3-SbCl5-235UO 2+2 system. Based on the solubility of Nd and U(VI) compounds in the POCl3-SbCl5 solvent and spectral-luminescence properties of Nd3+ and UO 2+2 in the luminophores obtained, the following compositions of the complexes formed were suggested: Nd(PO2Cl2)3−y (SbCly)y · xPOCl3, where y = 1, 2, and 3, and UO2(PO2Cl2)(SbCl6) · xPOCl3.
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Original Russian Text © G.V. Tikhonov, S.V. Kiselev, 2007, published in Radiokhimiya, 2007, Vol. 49, No. 6, pp. 524–528.
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Tikhonov, G.V., Kiselev, S.V. Synthesis and properties of liquid luminophores POCl3-SbCl5-Nd3+ and POCl3-SbCl5-235UO 2+2 . Radiochemistry 49, 597–602 (2007). https://doi.org/10.1134/S1066362207060100
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DOI: https://doi.org/10.1134/S1066362207060100