Abstract
Investigations have resulted in the development of synthesis procedures and the synthesis of solid compounds of Pr, Nd, Sm, Eu, Gd, Tb, Ho, Er, Yb and Lu in Ln(CH3COO)3–HDEHP–decane systems. Based on the results of chemical analysis and IR spectroscopy data it was concluded that the compounds are neutral mixed ligand complexes, the composition of which corresponds to the formula LnAn(CH3COO)y (where y=3−n). Di-(2-ethylhexyl)phosphatoacetates are of polymeric structure. The lanthanides of solid compounds are assumed to have coordination number 6. A scheme for the molecular structure of these compounds is proposed. The solubility of di-(2-ethylhexyl)phosphatoacetates in HDEHP–decane solutions has been studied and the composition of the extracted complexes was specified by the solubility method.
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