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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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