Cu2+, Zn2+, and Ni2+ Complexes of C2-Symmetric Pseudopeptides with an Aromatic Central Spacer
Impacte
Scholar |
Altres documents de l'autoria: Lingaraju, Gorla; Martí-Centelles, Vicente; Freimuth, Lena; Altava, Belen; Burguete, M. Isabel; Luis, Santiago V.
Metadades
Mostra el registre complet de l'elementcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/7053
comunitat-uji-handle3:10234/8639
comunitat-uji-handle4:
INVESTIGACIONAquest recurs és restringit
http://dx.doi.org/10.1021/acs.inorgchem.6b01066 |
Metadades
Títol
Cu2+, Zn2+, and Ni2+ Complexes of C2-Symmetric Pseudopeptides with an Aromatic Central SpacerAutoria
Data de publicació
2016Editor
American Chemical SocietyISSN
0020-1669; 1520-510XTipus de document
info:eu-repo/semantics/articleVersió de l'editorial
http://pubs.acs.org/doi/abs/10.1021/acs.inorgchem.6b01066Paraules clau / Matèries
Resum
Two new tetradentate C2-symmetric pseudopeptidic
ligands derived from Val and Phe containing two
amino and two amido groups and a central o-substituted
aromatic spacer have been prepared. Their complexes with
Cu2+, ... [+]
Two new tetradentate C2-symmetric pseudopeptidic
ligands derived from Val and Phe containing two
amino and two amido groups and a central o-substituted
aromatic spacer have been prepared. Their complexes with
Cu2+, Zn2+, and Ni2+ have been studied by potentiometry,
UV−vis spectrophotometry, FT-IR, and ESI-MS. The presence
of the aromatic spacer provides Cu2+ complexes with stability
constants several orders of magnitude higher than those
observed for related ligands containing aliphatic central
spacers. Besides, the formation of [MH−2L] complex species
is favored. Crystal structures for the corresponding Cu2+ and
Ni2+ have been obtained, revealing the metal atom in an
essentially square-planar geometry, although, in several
instances, the oxygen atom of an amide carbonyl of a second complex species can act as a fifth coordination site. In the case
of Zn2+, the only crystal structure obtained displays a square-pyramidal arrangement of the metal center. Finally, preliminary
experiments show the catalytic activity of some of these complexes, in particular, Zn2+ complexes, for epoxide ring-opening with
using aniline as the nucleophile in a ligand accelerated process. [-]
Publicat a
Inorg. Chem., 2016, 55 (15), pp 7617–7629Drets d'accés
Copyright © 2016 American Chemical Society
http://rightsstatements.org/vocab/InC/1.0/
info:eu-repo/semantics/restrictedAccess
http://rightsstatements.org/vocab/InC/1.0/
info:eu-repo/semantics/restrictedAccess
Apareix a les col.leccions
- QUIO_Articles [689]