TY - JOUR
T1 - Pressure-tuning of magnetism and linkage isomerism in iron(II) hexacyanochromate
AU - Coronado, Eugenio
AU - Giménez-López, Mari Carmen
AU - Levchenko, Georgiy
AU - Romero, Francisco M.
AU - García-Baonza, Valentín
AU - Milner, Alla
AU - Paz-Pasternak, Moshe
PY - 2005/4/6
Y1 - 2005/4/6
N2 - 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□1.2·16H2O (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.
AB - 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□1.2·16H2O (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.
UR - http://www.scopus.com/inward/record.url?scp=16844372522&partnerID=8YFLogxK
U2 - 10.1021/ja043166z
DO - 10.1021/ja043166z
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AN - SCOPUS:16844372522
SN - 0002-7863
VL - 127
SP - 4580
EP - 4581
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
IS - 13
ER -