title: Preparation, solid-state characterization, and computational study of a crown ether attached to a squaramide.
abstract: [structure: see text] Crystals of a disecondary squaramide covalently linked to a crown ether presents a great variety of inter- and intramolecular nonbonded interactions including C-H/pi contacts, C-H...O and N-H...O hydrogen bonds, and pi-pi stacking between squaramide rings. Latter interaction, the stacking between squaramide rings, can be considered as an experimental evidence for the proposed aromaticity of squaramide when it is forming hydrogen bonds, either as acceptor or donor.
authors.affiliation: Department of Chemistry, Universitat de les Illes Balears, 07122 Palma de Mallorca, Spain. tony.frontera@uib.es
authors.forename: Antonio
authors.initials: A
authors.lastname: Frontera
authors.forename: Maria
authors.initials: M
authors.lastname: Orell
authors.forename: Carolina
authors.initials: C
authors.lastname: Garau
authors.forename: David
authors.initials: D
authors.lastname: Quiñonero
authors.forename: Elies
authors.initials: E
authors.lastname: Molins
authors.forename: Ignasi
authors.initials: I
authors.lastname: Mata
authors.forename: Jeroni
authors.initials: J
authors.lastname: Morey