title: Pentapyrrolic calix[4]pyrrole.
abstract: A new calix[4]pyrrole has been synthesised that contains a 3,4,5-trisbromopyrrole appended to a meso-position which shows enhanced anion affinity as compared to the parent meso-octamethylcalix[4]pyrrole macrocycle.
authors.affiliation: School of Chemistry, University of Southampton, Southampton, UK SO17 1BJ.
authors.forename: Colin N
authors.initials: CN
authors.lastname: Warriner
authors.forename: Philip A
authors.initials: PA
authors.lastname: Gale
authors.forename: Mark E
authors.initials: ME
authors.lastname: Light
authors.forename: Michael B
authors.initials: MB
authors.lastname: Hursthouse
mesh_terms: D047250:Calixarenes; D018360:Crystallography, X-Ray; D006860:Hydrogen Bonding; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; D011166:Porphyrins / Q000138:chemical synthesis* / Q000737:chemistry; D011758:Pyrroles / Q000138:chemical synthesis* / Q000737:chemistry
chemical_list: D011166:Porphyrins; D011758:Pyrroles; C469811:calix(4)pyrrole; C476173:calix(6)pyrrole; D047250:Calixarenes