title: Hexaazaphenalenyl anion revisited: a highly symmetric planar pi system with multiple-networking ability for self-assembled metal complexation.
abstract: The hexaazaphenalenyl anion (HAP, 3-), a highly symmetric heterocyclic pi system, has been synthesized and characterized. The crystal structures of its potassium salt K+.3- and copper complex Cu2+.(NH3)4.(3-)2 show pi-pi stacking and radially extended hydrogen bonds as well as coordination bonds constructed by the HAP anion. These in-plane and out-of-plane strong interactions demonstrate the multiple-networking ability of the HAP anion.
authors.affiliation: Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan.
authors.forename: Shuichi
authors.initials: S
authors.lastname: Suzuki
authors.forename: Yasushi
authors.initials: Y
authors.lastname: Morita
authors.forename: Kozo
authors.initials: K
authors.lastname: Fukui
authors.forename: Kazunobu
authors.initials: K
authors.lastname: Sato
authors.forename: Daisuke
authors.initials: D
authors.lastname: Shiomi
authors.forename: Takeji
authors.initials: T
authors.lastname: Takui
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Nakasuji