BISTABILITY OF CO-III(N-N)(3,6-DBSQ)(3,6-DBCAT) - SUBTLE DIIMINE LIGAND EFFECT (N-N=4,7-DIMETHYL-1,10-PHENANTHROLINE, 5-CHLORO-1,10-PHENANTHROLINE - DBSQ= DI-TERT-BUTYLSEMIQUINONATO - DBCAT=DI-TERT-BUTYLCATECHOLATE)

Abstract

studies of Co(N-N)(3,6-DBSQ)(3,6-DBCat)(N-N = 4,7-dimethyl-1,10-phenanthroline, 5-chloro-1,10-phenanthroline; DBSQ = di-tert-butylsemiquinonato; DBCat = di-tert-butylcatecholato) have been carried out on the bistability by intramolecular cobalt-quinone electron transfer in solid state. The title complexes dominantly exist as Co-III(N-N)(3,6-DBSQ)(3,6-DBCat) at room temperature and display a significant bistability on temperature variation. Subtle change in optical spectra and magnetic properties is observed when diimine ligands are changed.