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@article{709519,
author = {Lubal, Přemysl and Maleček, Jiří and Hermann, Petr and Kotek, Jan and Havel, Josef},
article_location = {Velká Británie},
article_number = {9},
keywords = {capillary electrophoresis; kinetics; cyclam-1-8-bis(methylphosphonic acid); copper complexes; isomerization; phosphonate complexes},
language = {eng},
issn = {0277-5387},
journal = {Polyhedron},
title = {Capillary Electrophoretic Separation and Kinetic Study of Inert Copper(II) Complexes of 1,8-bis(methylphosphonate) Derivative of Cyclam},
volume = {25},
year = {2006}
}
TY - JOUR
ID - 709519
AU - Lubal, Přemysl - Maleček, Jiří - Hermann, Petr - Kotek, Jan - Havel, Josef
PY - 2006
TI - Capillary Electrophoretic Separation and Kinetic Study of Inert Copper(II) Complexes of 1,8-bis(methylphosphonate) Derivative of Cyclam
JF - Polyhedron
VL - 25
IS - 9
SP - 1884-1892
EP - 1884-1892
PB - Elsevier Science Ltd.
SN - 02775387
KW - capillary electrophoresis
KW - kinetics
KW - cyclam-1-8-bis(methylphosphonic acid)
KW - copper complexes
KW - isomerization
KW - phosphonate complexes
N2 - The behaviour of two structural isomers of the copper(II) complex of 1,4,8,11-tetraazacyclotetradecane-1,8-bis(methylphosphonic acid) (H(4)dipon), penta- and hexacoordinated species, was studied by capillary electrophoresis. The separation and determination of both the isomers with the same molecular weight and charge and the free H(4)dipon ligand were achieved in 75 mM disodium tetraborate aqueous solution (pH 9.5) as background electrolyte and, simultaneously, magnitudes of their effective mobilities were determined. The influence of both variables (pH and buffer composition/concentration) on the separation was established and the principle of the separation was proposed. The method of separation was applied to the study of the reaction mechanism of the isomerization. It was proved that the reaction can be explained by several mechanisms with the same fit through experimental data. The first step of the isomerization reaction proceeds relatively slowly and is the rate-determining step of reaction.
ER -
LUBAL, Přemysl, Jiří MALEČEK, Petr HERMANN, Jan KOTEK and Josef HAVEL. Capillary Electrophoretic Separation and Kinetic Study of Inert Copper(II) Complexes of 1,8-bis(methylphosphonate) Derivative of Cyclam. \textit{Polyhedron}. Velká Británie: Elsevier Science Ltd., 2006, vol.~25, No~9, p.~1884-1892. ISSN~0277-5387.
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