title: Awakening of a ferrous complex's electronic spin in an aqueous solution induced by a chemical stimulus.
abstract: A low-spin, macrocyclic iron(II) complex in an aqueous solution responds to the addition of a chemical reactant (dithionite) by transformation into a high-spin complex, detectable by measurement of the longitudinal relaxation time (T(1)) of surrounding water hydrogen nuclear spins. The initial compound does not modify T(1) of pure water at concentrations as high as 4 mM. The response is pH-dependent, and the complex is robust at a variety of conditions.
authors.affiliation: Laboratoire de Chimie, UMR CNRS UCBL 5182, Ecole Normale Supérieure de Lyon, 46 allée d'Italie, 69364 Lyon, France.
authors.forename: Fayçal
authors.initials: F
authors.lastname: Touti
authors.forename: Philippe
authors.initials: P
authors.lastname: Maurin
authors.forename: Laurence
authors.initials: L
authors.lastname: Canaple
authors.forename: Olivier
authors.initials: O
authors.lastname: Beuf
authors.forename: Jens
authors.initials: J
authors.lastname: Hasserodt
mesh_terms: D004227:Dithionite / Q000737:chemistry*; D005296:Ferrous Compounds / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D047028:Macrocyclic Compounds / Q000737:chemistry*; D008958:Models, Molecular; D014867:Water / Q000737:chemistry*
chemical_list: D005296:Ferrous Compounds; D047028:Macrocyclic Compounds; D014867:Water; D004227:Dithionite