Enhancement of anion recognition exhibited by a zinc-imidazole-based ion-pair receptor composed of C–H hydrogen- and halogen-bond donor groups

Zapata Fernández, Fabiola; Sabater, Paula; López, Bernardo; Fernández, Israel; Caballero, Antonio; Molina, Pedro

Publication:
Enhancement of anion recognition exhibited by a zinc-imidazole-based ion-pair receptor composed of C–H hydrogen- and halogen-bond donor groups

dc.contributor.author	Zapata Fernández, Fabiola
dc.contributor.author	Sabater, Paula
dc.contributor.author	López, Bernardo
dc.contributor.author	Fernández, Israel
dc.contributor.author	Caballero, Antonio
dc.contributor.author	Molina, Pedro
dc.contributor.department	Química Orgánica
dc.date.accessioned	2024-02-06T13:04:50Z
dc.date.available	2024-02-06T13:04:50Z
dc.date.created	2018-11-13
dc.description	©2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ This document is the Accepted, version of a Published Work that appeared in final form in Dalton Transactions. To access the final edited and published work see https://doi.org/10.1039/C8DT03736A
dc.description.abstract	A 2-haloimidazole-tetraphenylethylene ion-pair receptor 1 is shown to recognise only HSO4− anions in the presence of a cobound Zn2+ cation guest species, which induced a remarkable increase with conco- mitant blue shift of the emission band of the complex [1·2Zn]4+ whereas no aﬃnity of the free receptor 1 by the anions is observed. In addition, the downﬁeld shifts observed by 1H NMR of the Ha, Hb and Hc protons of the complex [1·2Zn]4+ upon the addition of HSO4− anions indicate their participation in the recognition event. According to DFT studies, upon chelating a Zn2+ cation with two imidazole nitrogen atoms, receptor 1 adopts a conformation ideally ﬁtted to recognise HSO4− through a combination of C(sp2)–H⋯O and C(sp3)–H⋯O hydrogen bondings, C+(sp2)–Br⋯O halogen bonding and C(sp2)⋯O tetrel bonding."	es
dc.format	application/pdf	es
dc.format.extent	6	es
dc.identifier.citation	Dalton Transactions, 47, 2018:15941–15947
dc.identifier.doi	https://doi.org/10.1039/C8DT03736A
dc.identifier.issn	Print: 1477-9226
dc.identifier.issn	Electronic: 1477-9234
dc.identifier.uri	http://hdl.handle.net/10201/138767
dc.language	eng	es
dc.publisher	Royal Society of Chemistry	es
dc.relation	Ministerio de Economía y Competitividad of Spain and FEDER (projects CTQ2013-46096-P, CTQ2017-86775-P, CTQ201235513-C0202, CTQ2016-78205-P and CTQ2016-81797-REDC) and the Fundación Séneca Región de Murcia (CARM) (projects 18948/JLI/13 and 19337/PI/14)	es
dc.rights	info:eu-repo/semantics/openAccess	es
dc.subject	Anion recognition	es
dc.subject	Halogen bond
dc.subject	Imidazole
dc.subject	Hydrogen bond
dc.subject	Receptor
dc.subject.other	CDU::5 - Ciencias puras y naturales::54 - Química::547 - Química orgánica	es
dc.title	Enhancement of anion recognition exhibited by a zinc-imidazole-based ion-pair receptor composed of C–H hydrogen- and halogen-bond donor groups	es
dc.type	info:eu-repo/semantics/article	es
dspace.entity.type	Publication	es