title: The phenalenyl motif: a magnetic chameleon.
abstract: The 12pi cation (3) and 14pi anion (4) derived from the phenalenyl radical (2) support diatropic ("aromatic") perimeter ring currents, but isoelectronic replacement of the central atom by either boron (5) or nitrogen (6) leads to paratropic ("antiaromatic") current; the ipsocentric approach to molecular magnetic response accounts for all four patterns in terms of competition between translationally and rotationally allowed virtual pi-pi* excitations.
authors.affiliation: Department of Chemistry, University of Warsaw, Pasteura 1, 01-093 Warsaw, Poland.
authors.forename: Michał K
authors.initials: MK
authors.lastname: Cyrański
authors.forename: Remco W A
authors.initials: RW
authors.lastname: Havenith
authors.forename: Michał A
authors.initials: MA
authors.lastname: Dobrowolski
authors.forename: Benjamin R
authors.initials: BR
authors.lastname: Gray
authors.forename: Tadeusz M
authors.initials: TM
authors.lastname: Krygowski
authors.forename: Patrick W
authors.initials: PW
authors.lastname: Fowler
authors.forename: Leonardus W
authors.initials: LW
authors.lastname: Jenneskens