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Cu2+, Zn2+, and Ni2+ Complexes of C2-Symmetric Pseudopeptides with an Aromatic Central Spacer
dc.contributor.author | Lingaraju, Gorla | |
dc.contributor.author | Martí-Centelles, Vicente | |
dc.contributor.author | Freimuth, Lena | |
dc.contributor.author | Altava, Belen | |
dc.contributor.author | Burguete, M. Isabel | |
dc.contributor.author | Luis, Santiago V. | |
dc.date.accessioned | 2016-11-03T15:58:55Z | |
dc.date.available | 2016-11-03T15:58:55Z | |
dc.date.issued | 2016 | |
dc.identifier.issn | 0020-1669 | |
dc.identifier.issn | 1520-510X | |
dc.identifier.uri | http://hdl.handle.net/10234/164017 | |
dc.description.abstract | 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. | ca_CA |
dc.description.sponsorShip | Spanish MINECO CTQ2015-68429-R Generalitat Valenciana PROMETEO/2012/020 GRISOLIA 2012/015 PPI-UJI P1-1B-2013-38 | ca_CA |
dc.format.extent | 13 p. | ca_CA |
dc.language.iso | eng | ca_CA |
dc.publisher | American Chemical Society | ca_CA |
dc.relation.isPartOf | Inorg. Chem., 2016, 55 (15), pp 7617–7629 | ca_CA |
dc.rights | Copyright © 2016 American Chemical Society | ca_CA |
dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | * |
dc.subject | ring-opening reactions | ca_CA |
dc.subject | transition-metal-complexes | ca_CA |
dc.subject | beta-amino alcohols | ca_CA |
dc.subject | molecular recognition | ca_CA |
dc.subject | copper(ii) complexes | ca_CA |
dc.subject | meso-epoxides | ca_CA |
dc.subject | mass-spectrometry | ca_CA |
dc.subject | open-chain | ca_CA |
dc.subject | potentiometric titrations | ca_CA |
dc.subject | protonation behavior | ca_CA |
dc.title | Cu2+, Zn2+, and Ni2+ Complexes of C2-Symmetric Pseudopeptides with an Aromatic Central Spacer | ca_CA |
dc.type | info:eu-repo/semantics/article | ca_CA |
dc.identifier.doi | http://dx.doi.org/10.1021/acs.inorgchem.6b01066 | |
dc.rights.accessRights | info:eu-repo/semantics/restrictedAccess | ca_CA |
dc.relation.publisherVersion | http://pubs.acs.org/doi/abs/10.1021/acs.inorgchem.6b01066 | ca_CA |
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