PISKULA, Zbigniew, Ivona SVOBODOVÁ, Přemysl LUBAL, Stefan LIS, Zbigniew HNATEJKO a Petr HERMANN. Kinetic study of dissociation of Eu(III) complex with H(8)dotp (H(8)dotp=1,4,7,10-tetraazacyclododecane-1,4,7,10-tetrakis(methylphosphonic acid)). Inorganica Chimica Acta. Oxford, UK: Elsevier Science, 2007, roč. 360, č. 12, s. 3748-3755. ISSN 0020-1693. |
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@article{755148, author = {Piskula, Zbigniew and Svobodová, Ivona and Lubal, Přemysl and Lis, Stefan and Hnatejko, Zbigniew and Hermann, Petr}, article_location = {Oxford, UK}, article_number = {12}, keywords = {macrocyclic complexes; cyclen derivatives; phosphonate complex; Europium(III) complex; dissociation kinetics; molecular absorption spectroscopy; time-resolved laser-induced fluorescence spectroscopy (TRLIFS)}, language = {eng}, issn = {0020-1693}, journal = {Inorganica Chimica Acta}, title = {Kinetic study of dissociation of Eu(III) complex with H(8)dotp (H(8)dotp=1,4,7,10-tetraazacyclododecane-1,4,7,10-tetrakis(methylphosphonic acid))}, volume = {360}, year = {2007} }
TY - JOUR ID - 755148 AU - Piskula, Zbigniew - Svobodová, Ivona - Lubal, Přemysl - Lis, Stefan - Hnatejko, Zbigniew - Hermann, Petr PY - 2007 TI - Kinetic study of dissociation of Eu(III) complex with H(8)dotp (H(8)dotp=1,4,7,10-tetraazacyclododecane-1,4,7,10-tetrakis(methylphosphonic acid)) JF - Inorganica Chimica Acta VL - 360 IS - 12 SP - 3748-3755 EP - 3748-3755 PB - Elsevier Science SN - 00201693 KW - macrocyclic complexes KW - cyclen derivatives KW - phosphonate complex KW - Europium(III) complex KW - dissociation kinetics KW - molecular absorption spectroscopy KW - time-resolved laser-induced fluorescence spectroscopy (TRLIFS) N2 - The dissociation kinetics of the europium(III) complex with H8dotp ligand was studied by means of molecular absorption spectroscopy in UV region at ionic strength 3.0 mol dm-3 (Na,H)ClO4 and in temperature region 25-60 degrees C. Time-resolved laser-induced fluorescence spectroscopy (TRLIFS) was employed in order to determine the number of water molecules in the first coordination sphere of the europium(III) reaction intermediates and the final products. This technique was also utilized to deduce the composition of reaction intermediates in course of dissociation reaction simultaneously with calculation of rate constants and it demonstrates the elucidation of intimate reaction mechanism. The thermodynamic parameters for the formation of kinetic intermediate and the activation parameters for the rate-determining step describing the complex dissociation were determined. The mechanism of proton-assisted reaction was proposed on the basis of the experimental data. ER -
PISKULA, Zbigniew, Ivona SVOBODOVÁ, Přemysl LUBAL, Stefan LIS, Zbigniew HNATEJKO a Petr HERMANN. Kinetic study of dissociation of Eu(III) complex with H(8)dotp (H(8)dotp=1,4,7,10-tetraazacyclododecane-1,4,7,10-tetrakis(methylphosphonic acid)). \textit{Inorganica Chimica Acta}. Oxford, UK: Elsevier Science, 2007, roč.~360, č.~12, s.~3748-3755. ISSN~0020-1693.
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