title: Anion-induced dimerization in p-squaramidocalix[4]arene derivatives.
abstract: Spherical anions induce the dimerization of calix[4]arene derivatives 3 and 4 bearing squaramide moieties at the exo rim (p-squaramidocalixarenes). (1)H NMR titration experiments showed that unlike the distal isomer 3, proximal p-squaramidocalixarene 4 is also able to form dimeric complexes with trigonal-planar anions.
authors.affiliation: Dipartimento di Chimica e Biologia, Università di Salerno , Via Giovanni Paolo II 132, I-84084 Fisciano (Salerno), Italy.
authors.forename: Carmine
authors.initials: C
authors.lastname: Gaeta
authors.forename: Carmen
authors.initials: C
authors.lastname: Talotta
authors.forename: Paolo
authors.initials: P
authors.lastname: Della Sala
authors.forename: Luigi
authors.initials: L
authors.lastname: Margarucci
authors.forename: Agostino
authors.initials: A
authors.lastname: Casapullo
authors.forename: Placido
authors.initials: P
authors.lastname: Neri
mesh_terms: D000838:Anions / Q000737:chemistry*; D047250:Calixarenes / Q000737:chemistry*; D019281:Dimerization; D006860:Hydrogen Bonding; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; D013890:Thiourea / Q000737:chemistry*
chemical_list: D000838:Anions; D047250:Calixarenes; D013890:Thiourea