Phosphoryl Podands Ph2P(O)CH2O(CH2CH2O)nCH2P(O)Ph2 (Ln, n = 0–5): Complexation and Extraction of Rare Earth Elements. Crystal Structures of [Ln2L03(NO3)6] · xH2O (Ln = Nd, x = 1.99; Ln = Eu, x = 1; Ln = Er, x = 6.5; Ln = Lu, x = 6) and [LnL2(NO3)3(H2O)] (Ln = Nd, Er)
作者:I. N. Polyakova、E. S. Krivorot’ko、I. S. Ivanova、E. N. Pyatova、S. V. Demin、V. I. Zhilov、V. E. Baulin、A. B. Ilyukhin、A. Yu. Tsivadze
DOI:10.1134/s0036023618100169
日期:2018.10
Extraction of rare earth elements with bis(diphenylphosphorylmethyl) ethers of oligoethylene glycols Ph2P(O)CH2O(CH2CH2O)(n)CH2P(O)Ph-2 (L-n, n = 0-5) in 1,1,7-trihydrododecafluoroheptanol-water system with variable HNO3 concentration from 0.5 to 6 mol/L has been studied Complexes of Nd, Eu, Lu, and Er nitrates with L-0 and L-2 have been obtained. Crystal structures of [Ln(2)L(3)(o)(NO3)(6)]center dot xH(2)O (Ln = Nd, x = 1.99; Ln = Eu, x = 1; Ln = Er, x = 6.5; Ln = Lu, x = 6) and [LnL(2)(NO3)(3)(H2O)] (Ln = Nd, Er) have been studied by X-ray diffraction, IR spectroscopy, and thermogravimetry. Correlation between X-ray diffraction and extraction data has been revealed.