TÁBORSKÝ, Petr, Přemysl LUBAL, Josef HAVEL, Jan KOTEK, Petr HERMANN and Ivan LUKEŠ. THERMODYNAMIC AND KINETIC STUDIES OF LANTHANIDE(III) COMPLEXES WITH H5do3ap (1,4,7,10-TETRAAZACYCLODODECANE-1,4,7-TRIACETIC-10-(METHYLPHOSPHONIC ACID)), A MONOPHOSPHONATE ANALOGUE OF H4dota. Collection of Czechoslovak Chemical Communications. Praha, 2005, vol. 70, No 11, p. 1909-1942. ISSN 0010-0765. |
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@article{599004, author = {Táborský, Petr and Lubal, Přemysl and Havel, Josef and Kotek, Jan and Hermann, Petr and Lukeš, Ivan}, article_location = {Praha}, article_number = {11}, keywords = {Azacrown compounds; Phosphonate complexes; Macrocyclic ligand; Cyclen derivative; Tetraazacyclododecane; DOTA; Thermodynamics; Kinetics; Crystal structure determination;Potentiometry; Cerium; Gadolinium; Lanthanide cations.}, language = {eng}, issn = {0010-0765}, journal = {Collection of Czechoslovak Chemical Communications}, title = {THERMODYNAMIC AND KINETIC STUDIES OF LANTHANIDE(III) COMPLEXES WITH H5do3ap (1,4,7,10-TETRAAZACYCLODODECANE-1,4,7-TRIACETIC-10-(METHYLPHOSPHONIC ACID)), A MONOPHOSPHONATE ANALOGUE OF H4dota}, url = {http://cccc.uochb.cas.cz/Vol/70/No11/20051909.html}, volume = {70}, year = {2005} }
TY - JOUR ID - 599004 AU - Táborský, Petr - Lubal, Přemysl - Havel, Josef - Kotek, Jan - Hermann, Petr - Lukeš, Ivan PY - 2005 TI - THERMODYNAMIC AND KINETIC STUDIES OF LANTHANIDE(III) COMPLEXES WITH H5do3ap (1,4,7,10-TETRAAZACYCLODODECANE-1,4,7-TRIACETIC-10-(METHYLPHOSPHONIC ACID)), A MONOPHOSPHONATE ANALOGUE OF H4dota JF - Collection of Czechoslovak Chemical Communications VL - 70 IS - 11 SP - 1909-1942 EP - 1909-1942 SN - 00100765 KW - Azacrown compounds KW - Phosphonate complexes KW - Macrocyclic ligand KW - Cyclen derivative KW - Tetraazacyclododecane KW - DOTA KW - Thermodynamics KW - Kinetics KW - Crystal structure determination;Potentiometry KW - Cerium KW - Gadolinium KW - Lanthanide cations. UR - http://cccc.uochb.cas.cz/Vol/70/No11/20051909.html N2 - Solution properties of complexes of a new H4dota-like ligand containing three acetate and one methylphosphonate pendant arms (H5do3ap, H5L) were studied. The ligand exhibits a high last dissociation constant (pKA = 13.83) as a consequence of the presence of phosphonate moiety. In solution, successive attachment of protons leads to several reorganizations of protonation sites and the neutral zwitterionic species H5do3ap has the same solution structure as in the solid state where the nitrogen atom binding methylphosphonate and the opposite nitrogen atoms are protonated. Stability constants with Na+ and trivalent lanthanide ions (La3+, Ce3+, Eu3+, Gd3+, Lu3+) and Y3+ were determined. The constants are comparable or higher than those of H4dota due to the higher overall basicity of H5do3ap. Formation of the stable protonated complexes as well as complexes with the L:M = 1:2 stoichiometry was proved. Formation and decomplexation kinetics of the Ce3+ and Gd3+ complexes were investigated. ER -
TÁBORSKÝ, Petr, Přemysl LUBAL, Josef HAVEL, Jan KOTEK, Petr HERMANN and Ivan LUKEŠ. THERMODYNAMIC AND KINETIC STUDIES OF LANTHANIDE(III) COMPLEXES WITH H5do3ap (1,4,7,10-TETRAAZACYCLODODECANE-1,4,7-TRIACETIC-10-(METHYLPHOSPHONIC ACID)), A MONOPHOSPHONATE ANALOGUE OF H4dota. \textit{Collection of Czechoslovak Chemical Communications}. Praha, 2005, vol.~70, No~11, p.~1909-1942. ISSN~0010-0765.
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