Bis(diphenylphosphorylmethyl) ethers of oligo(ethylene glycols) Ph2P(O)CH2O(CH2CH2O) n CH2P(O)Ph2 (n = 1–3): Complexation and extraction of rare-earth elements. Crystal structure of [NdL3(NO3)3(H2O)]
摘要:
Bis(diphenylphosphorylmethyl) ethers of oligo(ethylene glycols) Ph2P(O)CH2O(CH2CH2O) (n) CH2P(O)Ph-2 (L (n) , where n = 1-3) and coordination compounds of Nd and Er with L-3 are synthesized. The dependence of extractability of L1-3 on the structure of complexes in the 1,1,7-trihydrododecafluoroheptanol-water system at a concentration of HNO3 0.5-6.0 mol/L is determined. The crystal structure of [NdL3(NO3)(3)(H2O)] is studied by X-ray diffraction.
Synthesis, complexing properties, and selectivity of bis(diphenylphosphorylmethyl) ethers of oligoethylene glycols. Crystal structure of 1,3-bis(diphenylphosphoryl)-2-oxapropane
作者:I. S. Ivanova、V. E. Baulin、I. N. Polyakova、E. N. Pyatova、E. S. Krivorot’ko、E. N. Galkina、A. Yu. Tsivadze
DOI:10.1134/s107036321711010x
日期:2017.11
A convenient method of synthesis of phosphoryl-substituted podands with dipehnylphosphorylmethyl end groups of the general formula Ph2P(O)CH2O(CH2CH2O)nCH2P(O)Ph2 (Ln, n = 0–6) is described. The stability constants of the complexes of the podands with alkali metal 2,4-dinitrophenolates were determined by conductometry. The ion-selective properties of the podands with respect to alkali and alkaline-earth