title: Stable π Radical from a Contracted Doubly N-Confused Hexaphyrin by Double Palladium Metalation.
abstract: A contracted doubly N-confused dioxohexaphyrin derivative served as a dinucleating metal ligand for unsymmetrical coordination. The complexation of two palladium(II) cations led to the formation of π-radical species that were persistent in atmospheric air in the presence of moisture. Effective delocalization of an unpaired electron over the hexaphyrin backbone could contribute to the distinct chemical stability.
authors.affiliation: Department of Chemistry and Biochemistry, Graduate School of Engineering, and Education Center for Global Leaders in Molecular Systems for Devices, Kyushu University, Fukuoka 819-0395 (Japan).
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Hisamune
authors.affiliation: Department of Chemistry and Biochemistry, Graduate School of Engineering, and Education Center for Global Leaders in Molecular Systems for Devices, Kyushu University, Fukuoka 819-0395 (Japan).
authors.forename: Keiichi
authors.initials: K
authors.lastname: Nishimura
authors.affiliation: Department of Chemistry and Biochemistry, Graduate School of Engineering, and Education Center for Global Leaders in Molecular Systems for Devices, Kyushu University, Fukuoka 819-0395 (Japan).
authors.forename: Koji
authors.initials: K
authors.lastname: Isakari
authors.affiliation: Department of Chemistry and Biochemistry, Graduate School of Engineering, and Education Center for Global Leaders in Molecular Systems for Devices, Kyushu University, Fukuoka 819-0395 (Japan).
authors.forename: Masatoshi
authors.initials: M
authors.lastname: Ishida
authors.affiliation: Integrated Center for Science, Ehime University, Matsuyama 790-8577 (Japan).
authors.forename: Shigeki
authors.initials: S
authors.lastname: Mori
authors.affiliation: Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka 812-8582 (Japan).
authors.forename: Satoru
authors.initials: S
authors.lastname: Karasawa
authors.affiliation: Institute for Liberal Arts and Sciences, Kyoto University, Kyoto 606-8501 (Japan).
authors.forename: Tatsuhisa
authors.initials: T
authors.lastname: Kato
authors.affiliation: Spectroscopy Laboratory for Functional π-Electronic Systems and Department of Chemistry, Yonsei University, Seoul 120-749 (Korea).
authors.forename: Sangsu
authors.initials: S
authors.lastname: Lee
authors.affiliation: Spectroscopy Laboratory for Functional π-Electronic Systems and Department of Chemistry, Yonsei University, Seoul 120-749 (Korea). dongho@yonsei.ac.kr.
authors.forename: Dongho
authors.initials: D
authors.lastname: Kim
authors.affiliation: Department of Chemistry and Biochemistry, Graduate School of Engineering, and Education Center for Global Leaders in Molecular Systems for Devices, Kyushu University, Fukuoka 819-0395 (Japan). hfuruta@cstf.kyushu-u.ac.jp.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Furuta
mesh_terms: D002412:Cations / Q000737:chemistry; D018360:Crystallography, X-Ray; D019281:Dimerization; D004583:Electrons; D008024:Ligands; D008958:Models, Molecular; D010165:Palladium / Q000737:chemistry*; D011166:Porphyrins / Q000737:chemistry*
chemical_list: D002412:Cations; D008024:Ligands; D011166:Porphyrins; D010165:Palladium
keywords: N-confusion; expanded porphyrins; palladium; stable radicals; two-photon absorption