Competing Routes in the Extraction of Lanthanide Nitrates by 1,10-Phenanthroline-2,9-diamides: An Impact of Structure of Complexes on the Extraction
Yuri A. Ustynyuk, Nelly I. Zhokhova, Igor P. Gloriozov, Petr I. Matveev, Mariia V. Evsiunina, Pavel S. Lemport, Anton S. Pozdeev, Vladimir G. Petrov, A. V. Yatsenko, В. А. Тафеенко, Valentine G. Nenajdenko
Abstract
The fact of the fracture of the extraction curve of lanthanides by 1,10-phenanthroline-2,9-diamides is explained in terms of the structure of complexes, solvent extraction data and quantum chemical calculations. The solvent extraction proceeds in two competing directions: in the form of neutral complexes LLn(NO3)3 and in the form of tight ion pairs {[LLn(NO3)2 H2O]+ (NO3−).
Topics & Concepts
PhenanthrolineLanthanideExtraction (chemistry)ChemistryChromatographyInorganic chemistryOrganic chemistryIonRadioactive element chemistry and processingExtraction and Separation ProcessesAnalytical chemistry methods development