Preorganization of diglycolamides on the calix(4)arene platform and its effect on the extraction of Am(III)/Eu(III)

M. Iqbal, P.K. Mohapatra, S.A. Ansari, Jurriaan Huskens, Willem Verboom

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

Different diglycolamide (DGA)-substituted calix[4]arene-based extractants were synthesized and evaluated for the extraction of Am(III) and Eu(III), representative trivalent actinide and lanthanide ions, respectively. On the narrow rim of the calix[4]arene platform, the DGA moiety was either 1,3-di- or tetrasubstituted with a varying spacer length between the oxygen and amide nitrogen atom. In addition, DGA groups were appended both to the wide rim and to both rims of calix[4]arenes and their efficiencies were compared for Am(III) and Eu(III) extraction at three different feed acidities. The extraction and separation efficiencies strongly depended on the N-alkyl substituent as well as the spacer length. 1,3-Di-DGA-substituted calix[4]arenes are inferior extractants to the corresponding tetra-DGA-substituted ones. Narrow rim DGA-functionalized derivatives resulted in high extraction efficiencies, while the wide rim DGA-functionalized calix[4]arenes showed practically no extraction
Original languageEnglish
Pages (from-to)7840-7847
Number of pages7
JournalTetrahedron
Volume68
Issue number38
DOIs
Publication statusPublished - 2012

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Actinoid Series Elements
Lanthanoid Series Elements
Amides
Nitrogen
Ions
Oxygen
Acidity
calix(4)arene
Derivatives
Atoms

Keywords

  • METIS-293807
  • IR-85052

Cite this

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title = "Preorganization of diglycolamides on the calix(4)arene platform and its effect on the extraction of Am(III)/Eu(III)",
abstract = "Different diglycolamide (DGA)-substituted calix[4]arene-based extractants were synthesized and evaluated for the extraction of Am(III) and Eu(III), representative trivalent actinide and lanthanide ions, respectively. On the narrow rim of the calix[4]arene platform, the DGA moiety was either 1,3-di- or tetrasubstituted with a varying spacer length between the oxygen and amide nitrogen atom. In addition, DGA groups were appended both to the wide rim and to both rims of calix[4]arenes and their efficiencies were compared for Am(III) and Eu(III) extraction at three different feed acidities. The extraction and separation efficiencies strongly depended on the N-alkyl substituent as well as the spacer length. 1,3-Di-DGA-substituted calix[4]arenes are inferior extractants to the corresponding tetra-DGA-substituted ones. Narrow rim DGA-functionalized derivatives resulted in high extraction efficiencies, while the wide rim DGA-functionalized calix[4]arenes showed practically no extraction",
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Preorganization of diglycolamides on the calix(4)arene platform and its effect on the extraction of Am(III)/Eu(III). / Iqbal, M.; Mohapatra, P.K.; Ansari, S.A.; Huskens, Jurriaan; Verboom, Willem.

In: Tetrahedron, Vol. 68, No. 38, 2012, p. 7840-7847.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Preorganization of diglycolamides on the calix(4)arene platform and its effect on the extraction of Am(III)/Eu(III)

AU - Iqbal, M.

AU - Mohapatra, P.K.

AU - Ansari, S.A.

AU - Huskens, Jurriaan

AU - Verboom, Willem

PY - 2012

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AB - Different diglycolamide (DGA)-substituted calix[4]arene-based extractants were synthesized and evaluated for the extraction of Am(III) and Eu(III), representative trivalent actinide and lanthanide ions, respectively. On the narrow rim of the calix[4]arene platform, the DGA moiety was either 1,3-di- or tetrasubstituted with a varying spacer length between the oxygen and amide nitrogen atom. In addition, DGA groups were appended both to the wide rim and to both rims of calix[4]arenes and their efficiencies were compared for Am(III) and Eu(III) extraction at three different feed acidities. The extraction and separation efficiencies strongly depended on the N-alkyl substituent as well as the spacer length. 1,3-Di-DGA-substituted calix[4]arenes are inferior extractants to the corresponding tetra-DGA-substituted ones. Narrow rim DGA-functionalized derivatives resulted in high extraction efficiencies, while the wide rim DGA-functionalized calix[4]arenes showed practically no extraction

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