Autor segons l'article: Carles Bo Luis Martínez-Rodríguez Nuno A. G. Bandeira Arjan W. Kleij
Departament: Química Física i Inorgànica
Autor/s de la URV: BO JANÉ, CARLES Luis Martínez-Rodríguez Nuno A. G. Bandeira Arjan W. Kleij
Paraules clau: Calixarenes chirality transfer encapsulation
Resum: A calix[4]arene host equipped with two bis-[Zn(salphen)] complexes self-assembles into a capsular complex in the presence of a chiral diamine guest with an unexpected 2:1 ratio between the host and the guest. Effective chirality transfer from the diamine to the calix-salen hybrid host is observed by circular dichroism (CD) spectroscopy, and a high stability constant K2,1 of 1.59×1011 M-2 for the assembled host-guest ensemble has been determined with a substantial cooperativity factor α of 6.4. Density functional calculations are used to investigate the origin of the stability of the host-guest system and the experimental CD spectrum compared with those calculated for both possible diastereoisomers showing that the M,M isomer is the one that is preferentially formed. The current system holds promise for the chirality determination of diamines, as evidenced by the investigated substrate scope and the linear relationship between the ee of the diamine and the amplitude of the observed Cotton effects. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Àrees temàtiques: Química Química Chemistry
ISSN: 0947-6539
Identificador de l'autor: 0000-0001-9581-2922 n/a 0000-0002-5754-7328 0000-0002-7402-4764
Data d'alta del registre: 2015-08-04
Pàgina final: 7150
Volum de revista: 21
Versió de l'article dipositat: info:eu-repo/semantics/acceptedVersion
Enllaç font original: http://onlinelibrary.wiley.com/doi/10.1002/chem.201500333/full
URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
DOI de l'article: 10.1002/chem.201500333
Entitat: Universitat Rovira i Virgili
Any de publicació de la revista: 2015
Pàgina inicial: 7144
Tipus de publicació: Article Artículo Article
Repositori URV