Competing Routes in the Extraction of Lanthanide Nitrates by 1,10-Phenanthroline-2,9-diamides: An Impact of Structure of Complexes on the Extraction.

Authors :: Ustynyuk YA
Zhokhova NI
Gloriozov IP
Matveev PI
Evsiunina MV
Lemport PS
Pozdeev AS
Petrov VG
Yatsenko AV
Tafeenko VA
Nenajdenko VG
Source :: International journal of molecular sciences [Int J Mol Sci] 2022 Dec 08; Vol. 23 (24). Date of Electronic Publication: 2022 Dec 08.
Publication Year :: 2022
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 L Ln(NO <subscript>3</subscript> ) <subscript>3</subscript> and in the form of tight ion pairs {[ L Ln(NO <subscript>3</subscript> ) <subscript>2</subscript> H <subscript>2</subscript> O] <superscript>+</superscript> (NO <subscript>3</subscript> <superscript>-</superscript> ).

Subjects :: Models, Molecular
Diamide
Solvents
Nitrates
Lanthanoid Series Elements chemistry

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