title: Single-molecule magnetic behavior in a neutral terbium(III) complex of a picolinate-based nitronyl nitroxide free radical.
abstract: The terdentate anionic picolinate-based nitronyl nitroxide (picNN) free radical forms neutral and robust homoleptic complexes with rare earth-metal ions. The nonacoordinated Tb(3+) complex Tb(picNN)(3)·6H(2)O is a single-molecule magnet with an activation energy barrier Δ = 22.8 ± 0.5 K and preexponential factor τ(0) = (5.5 ± 1.1) × 10(-9) s. It shows magnetic hysteresis below 1 K.
authors.affiliation: Instituto de Ciencia Molecular, Universitat de València, Calle Catedrático José Beltrán 2, 46980 Paterna, Spain.
authors.forename: Eugenio
authors.initials: E
authors.lastname: Coronado
authors.forename: Carlos
authors.initials: C
authors.lastname: Giménez-Saiz
authors.forename: Alejandro
authors.initials: A
authors.lastname: Recuenco
authors.forename: Ana
authors.initials: A
authors.lastname: Tarazón
authors.forename: Francisco M
authors.initials: FM
authors.lastname: Romero
authors.forename: Agustín
authors.initials: A
authors.lastname: Camón
authors.forename: Fernando
authors.initials: F
authors.lastname: Luis
mesh_terms: D005609:Free Radicals / Q000737:chemistry; D007502:Iron Chelating Agents / Q000737:chemistry; D008280:Magnetics; D008958:Models, Molecular; D015394:Molecular Structure; D020030:Nitric Oxide Donors / Q000737:chemistry*; D009942:Organometallic Compounds / Q000737:chemistry*; D010848:Picolinic Acids / Q000737:chemistry*; D013725:Terbium / Q000737:chemistry*
chemical_list: D005609:Free Radicals; D007502:Iron Chelating Agents; D020030:Nitric Oxide Donors; D009942:Organometallic Compounds; D010848:Picolinic Acids; D013725:Terbium; C030614:picolinic acid