A TRLFS study on the complexation of Cm(III) and Eu(III) with 4-t-butyl-6,6 '-bis-(5,6-diethyl-1,2,4-triazin-3-yl)-2,2 '-bipyridine in a water/2-propanol mixture

S. Trumm; G. Lieser; Mark Foreman; P. J. Panak; A. Geist; T. Fanghanel

doi:10.1039/b919247f

A TRLFS study on the complexation of Cm(III) and Eu(III) with 4-t-butyl-6,6 '-bis-(5,6-diethyl-1,2,4-triazin-3-yl)-2,2 '-bipyridine in a water/2-propanol mixture
Artikel i vetenskaplig tidskrift, 2010

The complexation of Cm(III) and Eu(III) with 4-t-butyl-6,6'-bis-(5,6-diethyl-1,2,4-triazin-3-yl)-2,2'-bipyridine (t-Bu-C2-BTBP) in water/2-propanol solution is studied. With increasing ligand concentration, 1 : 2 complexes [M(t-Bu-C2-BTBP)(2)(H2O)](3+) form from the solvated metal ions. The stability constants are log K-Cm(III) = 11.1 and log K-Eu(III) = 9.0. For both Cm(III) and Eu(III), the complexation reaction is both enthalpy and entropy driven. Delta H-Cm(III) is 11.7 kJ mol(-1) more negative than Delta H-Eu(III), whereas the entropy difference is negligible. This is in good agreement with t-Bu-C2-BTBP's selectivity in liquid-liquid extraction.

BIPYRIDINES

SEPARATION

ACTINIDES(III)

AMERICIUM(III)

LIGANDS

MOLECULES

EXTRACTING AGENT

EFFICIENT

SPECTROSCOPY

LANTHANIDES(III)

Författare

S. Trumm

Karlsruher Institut für Technologie (KIT)

Universität Heidelberg

G. Lieser

Karlsruher Institut für Technologie (KIT)

Mark Foreman

Chalmers, Kemi- och bioteknik, Kärnkemi

Forskning Andra publikationer

P. J. Panak

Karlsruher Institut für Technologie (KIT)

Universität Heidelberg

A. Geist

Karlsruher Institut für Technologie (KIT)

T. Fanghanel

Universität Heidelberg

European Commission Joint Research Centre, Institute for Transuranium Elements Karlsruhe

Dalton Transactions

1477-9226 (ISSN) 1477-9234 (eISSN)

Vol. 39 3 923-929

Ämneskategorier

Oorganisk kemi

DOI

10.1039/b919247f

Publikationsdata kopplat till DOI

Mer information

Senast uppdaterat

2018-04-20

A TRLFS study on the complexation of Cm(III) and Eu(III) with 4-t-butyl-6,6 '-bis-(5,6-diethyl-1,2,4-triazin-3-yl)-2,2 '-bipyridine in a water/2-propanol mixture
Artikel i vetenskaplig tidskrift, 2010

Författare

S. Trumm

G. Lieser

Mark Foreman

P. J. Panak

A. Geist

T. Fanghanel

Dalton Transactions

Ämneskategorier

DOI

Mer information

Senast uppdaterat

Feedback och support

Om tjänsten

Länkar

Chalmers tekniska högskola

A TRLFS study on the complexation of Cm(III) and Eu(III) with 4-t-butyl-6,6 '-bis-(5,6-diethyl-1,2,4-triazin-3-yl)-2,2 '-bipyridine in a water/2-propanol mixture Artikel i vetenskaplig tidskrift, 2010

Författare

S. Trumm

G. Lieser

Mark Foreman

P. J. Panak

A. Geist

T. Fanghanel

Dalton Transactions

Ämneskategorier

DOI

Mer information

Senast uppdaterat

Feedback och support

Om tjänsten

Länkar

Chalmers tekniska högskola

A TRLFS study on the complexation of Cm(III) and Eu(III) with 4-t-butyl-6,6 '-bis-(5,6-diethyl-1,2,4-triazin-3-yl)-2,2 '-bipyridine in a water/2-propanol mixture
Artikel i vetenskaplig tidskrift, 2010