Copper(II) complexes of bis(amino amide) ligands: effect of changes in the amino acid residue
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Otros documentos de la autoría: Ferrer, Armando; Escorihuela, Jorge; Martí Vidal, Inés; Burguete, M. Isabel; Luis, Santiago V.
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http://dx.doi.org/10.1039/C2DT12459A |
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Título
Copper(II) complexes of bis(amino amide) ligands: effect of changes in the amino acid residueAutoría
Fecha de publicación
2012-03Editor
Royal Society of ChemistryTipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://pubs.rsc.org/en/content/articlelanding/2012/dt/c2dt12459aResumen
A family of ligands derived from bis(amino amides) containing aliphatic spacers has been prepared, and their protonation and stability constants for the formation of Cu2+ complexes have been determined potentiometri ... [+]
A family of ligands derived from bis(amino amides) containing aliphatic spacers has been prepared, and their protonation and stability constants for the formation of Cu2+ complexes have been determined potentiometrically. Important differences are associated to both the length of the aliphatic spacer and the nature of the side chains derived from the amino acid. In general, ligands containing aliphatic side chains display higher basicities as well as stability constants with Cu2+. In the same way, basicities and stability constants tend to increase when decreasing the steric hindrance caused by the corresponding side-chain. FT-IR, UV-vis and ESI-MS were used for analyzing the complex species detected in the speciation diagram. UV-vis studies showed the presence of different coordination environments for the copper(II) complexes. Complexes with different stoichiometries can be formed in some instances. This was clearly highlighted with the help of ESI-MS experiments. [-]
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Dalton Transactions. 2012, 41Derechos de acceso
© The Royal Society of Chemistry 2012
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