title: Bis-cation salt complexation by meso-octamethylcalix[4]pyrrole: linking complexes in solution and in the solid state.
abstract: Pyridinium and imidazolium bis-cations are shown to link calix[4]pyrrole anion complexes both in solution and in the solid state. This is accomplished by binding of the bis-cations to the electron-rich bowl shaped cavities formed by two separate calixpyrrole-anion complexes. These resulting sandwich-type structures provide a new way of organising calix[4]pyrrole anion complexes in space.
authors.affiliation: School of Chemistry, University of Southampton, Southampton, SO17 1BJ, UK.
authors.forename: Claudia
authors.initials: C
authors.lastname: Caltagirone
authors.forename: Nathan L
authors.initials: NL
authors.lastname: Bill
authors.forename: Dustin E
authors.initials: DE
authors.lastname: Gross
authors.forename: Mark E
authors.initials: ME
authors.lastname: Light
authors.forename: Jonathan L
authors.initials: JL
authors.lastname: Sessler
authors.forename: Philip A
authors.initials: PA
authors.lastname: Gale
mesh_terms: D000838:Anions / Q000737:chemistry; D047250:Calixarenes / Q000737:chemistry*; D002151:Calorimetry; D002412:Cations / Q000737:chemistry; D018360:Crystallography, X-Ray; D007093:Imidazoles / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; D011166:Porphyrins / Q000737:chemistry*; D011726:Pyridinium Compounds / Q000737:chemistry*
chemical_list: D000838:Anions; D002412:Cations; D007093:Imidazoles; D011166:Porphyrins; D011726:Pyridinium Compounds; C469811:calix(4)pyrrole; D047250:Calixarenes; C029899:imidazole