Intramolecular pi-dimerization in a 1,1'-bis(verdazyl)ferrocene diradical

Bryan D Koivisto; Andrew S Ichimura; Robert McDonald; Martin T Lemaire; Laurence K Thompson; Robin G Hicks

doi:10.1021/ja0566331

Intramolecular pi-dimerization in a 1,1'-bis(verdazyl)ferrocene diradical

J Am Chem Soc. 2006 Jan 25;128(3):690-1. doi: 10.1021/ja0566331.

Authors

Bryan D Koivisto¹, Andrew S Ichimura, Robert McDonald, Martin T Lemaire, Laurence K Thompson, Robin G Hicks

Affiliation

¹ Department of Chemistry, University of Victoria, P.O. Box 3065 STN CSC, Victoria, BC V8W 3V6, Canada.

PMID: 16417337
DOI: 10.1021/ja0566331

Abstract

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.