title: adj-Diazuliporphyrins, a new family of dicarbaporphyrinoids with unprecedented mesoionic characteristics.
abstract: A diazulenylmethane dialdehyde reacted with dipyrrylmethanes in the presence of HCl or HBr, followed by oxidation with FeCl(3), to give aromatic adj-diazuliporphyrins. The free base structures must exist as mesoionic species, although these porphyrinoids were isolated as salts of the monoprotonated macrocycles. Reaction with Pd(OAc)(2) gave an unprecedented zwitterionic palladium(II) complex that was characterized by X-ray crystallography.
authors.affiliation: Department of Chemistry, Illinois State University, Normal, Illinois 61790-4160, USA.
authors.forename: Zhenjun
authors.initials: Z
authors.lastname: Zhang
authors.forename: Gregory M
authors.initials: GM
authors.lastname: Ferrence
authors.forename: Timothy D
authors.initials: TD
authors.lastname: Lash
mesh_terms: D018360:Crystallography, X-Ray; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D010165:Palladium / Q000737:chemistry*; D011166:Porphyrins / Q000138:chemical synthesis / Q000737:chemistry*
chemical_list: D009942:Organometallic Compounds; D011166:Porphyrins; D010165:Palladium