title: Confusion of Möbius aromaticity: disruption of annulenic pathway in singly N-confused [28]hexaphyrin and its mono-Pd(II) complex.
abstract: Singly N-confused [26] and [28]hexaphyrins (4, 5) with planar and twisted structures, respectively, were prepared via the acid catalyzed [3 + 3] condensation of N-confused and regular tripyrrane precursors. Hückel aromaticity is observed for [26]hexaphyrin, while the [28]hexaphyrin and its mono-Pd(II) complex exhibit "nonaromaticity" in spite of their Möbius-type structures, judging from the spectroscopic features and theoretical calculations.
authors.affiliation: Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan.
authors.forename: Sabapathi
authors.initials: S
authors.lastname: Gokulnath
authors.forename: Motoki
authors.initials: M
authors.lastname: Toganoh
authors.forename: Keisuke
authors.initials: K
authors.lastname: Yamaguchi
authors.forename: Shigeki
authors.initials: S
authors.lastname: Mori
authors.forename: Hidemitsu
authors.initials: H
authors.lastname: Uno
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Furuta