Intramolecular pi-dimerization in a 1,1'-bis(verdazyl)ferrocene diradical.
The solid state structure of 1,1'-bis(verdazyl)ferrocene reveals the two radical moieties associated intramolecularly to give the first example of a pi-dimer of a stable verdazyl radical. The pi-dimer structure is not maintained in solution. Magnetic characterization indicates that the radicals are sufficiently strongly antiferromagnetically coupled so as to render the molecule diamagnetic at room temperature.
Koivisto
Bryan D
BD
Department of Chemistry, University of Victoria, P.O. Box 3065 STN CSC, Victoria, BC V8W 3V6, Canada.
Ichimura
Andrew S
AS
McDonald
Robert
R
Lemaire
Martin T
MT
Thompson
Laurence K
LK
Hicks
Robin G
RG