557762-94-4Relevant academic research and scientific papers
Relationship between ligand structure and electrochemical and relaxometric properties of acyclic poly(aminocarboxylate) complexes of Eu(II)
Botta, Mauro,Ravera, Mauro,Barge, Alessandro,Bottaro, Marco,Osella, Domenico
, p. 1628 - 1633 (2007/10/03)
A detailed electrochemical study on a series of Eu(III) complexes with multidentate acyclic poly(aminocarboxylate) ligands is reported. For all Eu(III) complexes, a le chemically reversible and electrocliemically irreversible or quasireversible process has been obtained. The electrode kinetics of the le reduction of Eu(III) aqua-ion is dependent on the supporting electrolyte as well as on the electrode surface. Pt and glassy carbon electrodes give quasi-reversible responses, whereas mercury shows the better-shaped curves, especially by using sodium p-toluenesulfonate as the supporting electrolyte. Chronoamperometric measurements have been carried out in the temperature range 1-35°C and the diffusion coefficients of a few Eu(III)/Eu(II) complexes evaluated. The 1/T1T 1H nuclear magnetic relaxation dispersion (NMRD) curves have been measured at 25°C in aqueous solution for selected Eu(II) complexes, analysed in terms of the standard theory of paramagnetic relaxation and compared with existing data for the isoelectronic Gd(III) derivatives. The Royal Society of Chemistry 2003.
