DISSOCIATION KINETICS STUDY OF Ce(III) COMPLEXES WITH H8dotp (H8dotp = 1,4,7,10-TETRAAZACYCLODODECANE-1,4,7,10-TETRAKIS(METHYLPHOSPHONIC ACID))

Warning

This publication doesn't include Faculty of Economics and Administration. It includes Faculty of Science. Official publication website can be found on muni.cz.

Authors	SVOBODOVÁ Ivona PISKULA Zbigniew LUBAL Přemysl LIS Stefan HERMANN Petr
Year of publication	2008
Type	Article in Periodical
Magazine / Source	Journal of Alloys and Compounds
MU Faculty or unit	Faculty of Science
Citation
Field	Inorganic chemistry
Keywords	macrocyclic complexes; cyclen derivatives; phosphonate complexes; lanthanide(III) complexes; cerium(III); dissociation kinetics
Description	The dissociation kinetics of cerium(III) complexes with H8dotp (I = 3.0 mol dm-3 (Na,H)ClO4, t = 25 - 60 degrees C) was studied by means of molecular absorption spectroscopy in the UV region. The mechanism of the proton-assisted reaction was proposed, and the activation parameters (Ea = 111 +/- 20 kJ mol-1, delta_H_act = 108 +/- 20 kJ mol-1, delta_S_act = 32 +/- 62 J K-1 mol-1) for the rate-determining step were calculated.
Related projects:	Centre of Biophysical Chemistry, Bioelectrochemistry and Bioanalysis. New Tools for Genomics, Proteomics and Biomedicine