title: Dinuclear cobalt bis(dioxolene) complex exhibiting two sequential thermally induced valence tautomeric transitions.
abstract: 4,6-Di-2'-pyridylpyrimidine is employed as a bis(diimine) ligand bridging two cobalt bis(dioxolene) centers. The thermally induced valence tautomeric transitions of these two metal centers are coupled through the ligand. The result is that sequential switching from high-spin Co(II) to low-spin Co(III) of one center, followed by the onset of switching of the other center at lower temperature, is observed in a solid amorphous thin film by IR absorption spectroscopy.
authors.affiliation: Department of Chemistry, University of Guelph, Guelph, Ontario, Canada.
authors.forename: Nigel G R
authors.initials: NG
authors.lastname: Hearns
authors.forename: Jasmine L
authors.initials: JL
authors.lastname: Korcok
authors.forename: Michelle M
authors.initials: MM
authors.lastname: Paquette
authors.forename: Kathryn E
authors.initials: KE
authors.lastname: Preuss