title: Formation and properties of cyclo[6]pyrrole and cyclo[7]pyrrole.
abstract: Oxidative coupling of a tetraalkylbipyrrole under FeIII-mediated coupling conditions in the presence of HCl results in a mixture of cyclo[6]- and cyclo[7]pyrroles, as well as the known cyclo[8]pyrrole. This "matched set" of heteroannulenes was analyzed by spectroscopic, electrochemical, and X-ray diffraction methods.
authors.affiliation: Department of Chemistry and Biochemistry, Institute for Cellular and Molecular Biology, The University of Texas, 1 University Station - A5430, Austin, Texas 78712-0165, USA.
authors.forename: Thomas
authors.initials: T
authors.lastname: Köhler
authors.forename: Daniel
authors.initials: D
authors.lastname: Seidel
authors.forename: Vincent
authors.initials: V
authors.lastname: Lynch
authors.forename: Forrest O
authors.initials: FO
authors.lastname: Arp
authors.forename: Zhongping
authors.initials: Z
authors.lastname: Ou
authors.forename: Karl M
authors.initials: KM
authors.lastname: Kadish
authors.forename: Jonathan L
authors.initials: JL
authors.lastname: Sessler