title: Asymmetric spin crossover behaviour and evidence of light-induced excited spin state trapping in a dinuclear iron(II) helicate.
abstract: Reported herein are the synthesis, structural and magnetic characterisation of a dinuclear FeII triple helicate that displays an unprecedented reversible asymmetric high spin to low spin crossover characterised by a thermal hysteresis: indeed the high spin state can be recovered by white light irradiation at 10 K.
authors.affiliation: University of Dublin, Trinity College, School of Chemistry, Dublin 2, Ireland.
authors.forename: Diane
authors.initials: D
authors.lastname: Pelleteret
authors.forename: Rodolphe
authors.initials: R
authors.lastname: Clérac
authors.forename: Corine
authors.initials: C
authors.lastname: Mathonière
authors.forename: Etienne
authors.initials: E
authors.lastname: Harté
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Schmitt
authors.forename: Paul E
authors.initials: PE
authors.lastname: Kruger