| TÁBORSKÝ, Petr, Přemysl LUBAL, Josef HAVEL, Jan KOTEK, Petr HERMANN a 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, roč. 70, č. 11, s. 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 a 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, roč.~70, č.~11, s.~1909-1942. ISSN~0010-0765.
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