6533b821fe1ef96bd127af01

RESEARCH PRODUCT

Pressure- and temperature-induced valence tautomeric interconversion in a o-dioxolene adduct of a cobalt-tetraazamacrocycle complex

Andrea CaneschiFabrizia Fabrizi De BianiAndrea DeiPhilipp GütlichVadim KsenofontovGeorgiy LevchenkoAndreas HoeferFranz Renz

subject

inorganic chemicalschemistry.chemical_classificationQuantitative Biology::BiomoleculesValence (chemistry)Transition temperatureOrganic ChemistryIonic bondingGeneral ChemistryPhotochemistryTautomerCatalysisAdductElectron transferCrystallographychemistryIntramolecular forceCondensed Matter::Strongly Correlated ElectronsPhysics::Chemical PhysicsCounterion

description

An electronic switch at the molecular level has been realized by using a class of ionic compounds of the formula [Co(L)(diox)]Y (L = tetraazamacrocyclic ligand, Y = mononegative anion). Such compounds undergo temperature- and pressure-induced intramolecular one-electron transfer equilibria. The transition temperature of interconversion varies with the nature of the counterions Y (Y = PF6, BPh4, I). Surprisingly the effect of the anion on the transition temperature is not only governed by its volume but also by its coulombic interaction.

10.1002/1521-3765(20010917)7:18http://hdl.handle.net/11365/20011