Author, as appears in the article.: Carles Bo Luis Martínez-Rodríguez Nuno A. G. Bandeira Arjan W. Kleij
Department: Química Física i Inorgànica
URV's Author/s: BO JANÉ, CARLES Luis Martínez-Rodríguez Nuno A. G. Bandeira Arjan W. Kleij
Keywords: Calixarenes chirality transfer encapsulation
Abstract: 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.
Thematic Areas: Química Química Chemistry
ISSN: 0947-6539
Author identifier: 0000-0001-9581-2922 n/a 0000-0002-5754-7328 0000-0002-7402-4764
Record's date: 2015-08-04
Last page: 7150
Journal volume: 21
Papper version: info:eu-repo/semantics/acceptedVersion
Link to the original source: http://onlinelibrary.wiley.com/doi/10.1002/chem.201500333/full
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Article's DOI: 10.1002/chem.201500333
Entity: Universitat Rovira i Virgili
Journal publication year: 2015
First page: 7144
Publication Type: Article Artículo Article
Repositori URV