Sterical Driving Minor Actinide Selectivity of Bi-pyridyl Diamides: Ortho- vs. Para-Substitution

Nataliya E. Borisova, Tsagana B. Sumyanova, Alexey V. Ivanov, Anastasia V. Kharcheva, Petr I. Matveev, Svetlana V. Patsaeva and Vladimir G. Petrov ()
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Nataliya E. Borisova: Department of Chemitry, Lomonosov Moscow State University, 119991 Moscow, Russia
Tsagana B. Sumyanova: Department of Chemitry, Lomonosov Moscow State University, 119991 Moscow, Russia
Alexey V. Ivanov: Department of Chemitry, Lomonosov Moscow State University, 119991 Moscow, Russia
Anastasia V. Kharcheva: Department of Chemitry, Lomonosov Moscow State University, 119991 Moscow, Russia
Petr I. Matveev: Department of Chemitry, Lomonosov Moscow State University, 119991 Moscow, Russia
Svetlana V. Patsaeva: Faculty of Physics, Lomonosov Moscow State University, 119991 Moscow, Russia
Vladimir G. Petrov: Department of Chemitry, Lomonosov Moscow State University, 119991 Moscow, Russia

Energies, 2022, vol. 15, issue 24, 1-12

Abstract: Hybrid donor extractants are a promising class of compounds for the separation of trivalent actinides and lanthanides. In this paper, we present a new ligand from the bipyridyl-dicarboxylic acid diamide family—N,N’-diethyl-N,N’-bis(2,4,5-trimethylphenyl)-[2,2’-bipyridine]-6,6’-dicarboxamide. The synthesis of N-ethyl-2,4,5-trimethylaniline from pseudocumene by selective acetylation is presented. The target ligand was obtained using this aminylene. Chemical synthesis of its complexes with Ln(NO 3 ) 3 and their spectroscopic analysis showed that the structure of the complexes is near to the corresponding structures of well-known di-methylated dianilides. A series of studies on the photophysical, complexing, and extraction properties of this ligand and its complexes were carried out. It was shown that the extraction system based on this ligand can selectively isolate americium from the solution of high-level waste imitator.

Keywords: HLW; liquid extraction; luminescence; stability constants; quantum yield of luminescence; lanthanide ions (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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