Cu2+ recognition by N,N′-benzylated bis(amino amides)
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Otros documentos de la autoría: Gorla, Lingaraju; Martí-Centelles, Vicente; Altava, Belen; Burguete, M. Isabel; Luis, Santiago V.
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INVESTIGACIONMetadatos
Título
Cu2+ recognition by N,N′-benzylated bis(amino amides)Autoría
Fecha de publicación
2017Editor
Royal Society of ChemistryCita bibliográfica
GORLA, Lingaraju; MARTÍ CENTELLES, Vicente; ALTAVS BENITO, Belén; BURGUETE AZCÁRATE, María Isabel; LUIS LAFUENTE, Santiago Vicente. Cu2+ recognition by N,N′-benzylated bis(amino amides). Dalton Transactions (2017), v. 46, pp. 2660-2669Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://pubs.rsc.org/en/content/articlelanding/2017/dt/c6dt04756d#!divAbstractPalabras clave / Materias
Resumen
Two new
C
2
-symmetric
N
,
N
’
-benzylated bis(amino amides) have been synthesised and their interaction
with di
ff
erent transition metals studied using a variety of techniques including UV-Vis and CD ... [+]
Two new
C
2
-symmetric
N
,
N
’
-benzylated bis(amino amides) have been synthesised and their interaction
with di
ff
erent transition metals studied using a variety of techniques including UV-Vis and CD spec-
troscopy or ESI-MS. The determination of the corresponding stability constants with Cu
2+
has been possi-
ble, in H
2
O/CH
3
CN 7/3 v/v, for one of these ligands (
4
) using potentiometric titrations. The results
obtained reveal that
N
-benzylation a
ff
ords signi
fi
cant changes to their properties and is accompanied by
an appreciable decrease in the corresponding complexation stability constants. However, this, along with
the low kinetics associated to Ni
2+
, facilitates the recognition of Cu
2+
by
4
that can be followed by the
naked-eye up to the submillimolar range. Very interestingly, the chiral nature of this ligand provides an
intense and well de
fi
ned CD curve for the corresponding Cu
2+
complex, very sensitive to the coordination
geometry, facilitating the analysis of this interaction even at the
μ
M range. The formation by both ligands
(
3
and
4
) of square planar complexes with Cu
2+
and Ni
2+
displaying a 1 : 1 stoichiometry was con
fi
rmed by
their X-ray crystal structures [-]
Publicado en
Dalton Transactions (2017), v. 46Derechos de acceso
info:eu-repo/semantics/openAccess
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