Americium(iii) and europium(iii) complex formation with lactate at elevated temperatures studied by spectroscopy and quantum chemical calculations

Astrid Barkleit, Jerome Kretzschmar, Satoru Tsushima, Margret Acker
  • Dalton Transactions, January 2014, Royal Society of Chemistry
  • DOI: 10.1039/c4dt00440j

Am(III)/Eu(III) lactate complexation

What is it about?

We report about the complexation of the trivalent actinide Am(III) and its non-radioactive homolog, the trivalent lanthanide Eu(III), with the ubiquitous, environmentally and biologically important ligand lactate. Thermodynamic data (complex stability constants, reaction enthalpy, reaction entropy) were determined using temperature-dependent laser-induced fluorescence spectroscopy and UV/vis spectroscopy. ATR FT-IR and NMR combined with DFT calculations provided detailed structural information.

Why is it important?

Spectroscopic techniques (NMR and ATR FT-IR) in combination with calculations (DFT) show that the hydroxyl group of the lactate is deprotonated under complex formation with Eu(III).

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http://dx.doi.org/10.1039/c4dt00440j

The following have contributed to this page: Dr Satoru Tsushima and Astrid Barkleit