title: Synthesis of a metal-free texaphyrin.
abstract: The synthesis of a metal-free form of texaphyrin, an aromatic porphyrin-like macrocycle, is described. Previously, texaphyrins could only be obtained reproducibly in the form of metal complexes. Using ferrocenium cation as the oxidizing agent and starting with a reduced porphyrinogen-like nonaromatic form of texaphyrin, we isolated, in good yield, the metal-free oxidized texaphyrin as its HPF(6) salt. This product was characterized by X-ray diffraction analysis, UV-vis spectroscopy, and cyclic voltammetry. [structure: see text]
authors.affiliation: Department of Chemistry and Biochemistry, University of Texas at Austin, Austin, TX 78712, USA.
authors.forename: S
authors.initials: S
authors.lastname: Hannah
authors.forename: V M
authors.initials: VM
authors.lastname: Lynch
authors.forename: N
authors.initials: N
authors.lastname: Gerasimchuk
authors.forename: D
authors.initials: D
authors.lastname: Magda
authors.forename: J L
authors.initials: JL
authors.lastname: Sessler
mesh_terms: D018360:Crystallography, X-Ray; D008670:Metals / Q000737:chemistry*; D015394:Molecular Structure; D011166:Porphyrins / Q000138:chemical synthesis* / Q000737:chemistry; D013056:Spectrophotometry, Ultraviolet
chemical_list: D008670:Metals; D011166:Porphyrins; C442892:texaphyrin