Journal of the American Chemical Society · 2005 · 190 citations · 16 references
Natural SciencesChemistryPhysicsInorganic ChemistrySolid State PhysicsSolid-state ChemistryCurie TemperatureMagnetic Properties Of SolidsMagnetic SusceptibilityMagnetism In SolidsMagnetism Of Inorganic CompoundsMagnetization ProcessesAmbient Pressure EffectsMagnetic Ordering TransitionsMagnetic PropertiesMagnetic Properties Of Transition Metal ComplexesMagnetism Of Transition Metal ComplexesMolecular MagnetismPrussian Blue AnaloguesSpin States
A pressure-induced linkage isomerization of the cyanide anion has been observed in single crystals of a chromium(III)-iron(II) Prussian blue analogue of formula K0.4Fe4[Cr(CN)6]2.8 square1.2.16H2O (1). Upon application of pressure in the 0-1200 MPa range, the cyanide ligand rotates and becomes C-bonded to the iron(II) cations, leading to a stabilization of their diamagnetic low-spin states. The result is a decrease of magnetization and magnetic ordering temperatures from TC = 19 K at ambient pressure to 13 K at 1200 MPa. The initial magnetic properties can be restored on pressure release. The reversible movement of cyanide in the solid state can be exploited as a switch of the magnetic interaction at the molecular level.
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Photoinduced Magnetization of a Cobalt-Iron Cyanide
Osamu Sato, Tomokazu Iyoda, Akira Fujishima et al. · Science · 1996 · 1.8K citations
A room-temperature organometallic magnet based on Prussian blue
Sylvie Ferlay, Talal Mallah, R. Ouahès et al. · Nature · 1995 · 1.5K citations