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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)

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Abstract

Extraction of rare earth elements with bis(diphenylphosphorylmethyl) ethers of oligoethylene glycols Ph2P(O)CH2O(CH2CH2O)nCH2P(O)Ph2 (Ln, 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 L0 and L2 have been obtained. Crystal structures of [Ln2L 03 (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) have been studied by X-ray diffraction, IR spectroscopy, and thermogravimetry. Correlation between X-ray diffraction and extraction data has been revealed.

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Authors and Affiliations

  1. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow, 119991, Russia

    I. N. Polyakova, I. S. Ivanova, E. N. Pyatova & A. B. Ilyukhin

  2. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Moscow, 119991, Russia

    E. S. Krivorot’ko, I. S. Ivanova, E. N. Pyatova, S. V. Demin, V. I. Zhilov, V. E. Baulin & A. Yu. Tsivadze

  3. Institute of Physiologically Active Substances, Russian Academy of Sciences, Chernogolovka, Moscow oblast, 142432, Russia

    V. E. Baulin

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  1. I. N. Polyakova
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  2. E. S. Krivorot’ko
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Correspondence to I. S. Ivanova.

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Original Russian Text © 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, 2018, published in Zhurnal Neorganicheskoi Khimii, 2018, Vol. 63, No. 10, pp. 1353–1361.

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Polyakova, I.N., Krivorot’ko, E.S., Ivanova, I.S. et al. 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). Russ. J. Inorg. Chem. 63, 1372–1380 (2018). https://doi.org/10.1134/S0036023618100169

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