RT Journal Article
T1 Pressure-Tuning of Magnetism and Linkage Isomerism in Iron(II) Hexacyanochromate
A1 Giménez López, María del Carmen
A1 Coronado, Eugenio
A1 Levchenko, Georgiy
A1 Romero, Francisco
A1 Garcia Baonza, Valentin
A1 Milner, Alla
A1 Paz Pasternak, Moshe
K1 Cyanide anion
K1 Diamagnetic
K1 Magnetic interaction
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.
PB American Chemical Society
SN 0002-7863
YR 2005
FD 2005
LK http://hdl.handle.net/10347/32224
UL http://hdl.handle.net/10347/32224
LA eng
NO Coronado, E., Giménez-López, M.C.,  Levchenko, G., Romero, F., García-Baonza, V., Milner, A., Paz-Pasternak, M.,  (2005). Pressure-Tuning of Magnetism and Linkage Isomerism in Iron(II) Hexacyanochromate, "Journal of the American Chemical Society (JACS)", vol. 127, 4580-4581
NO We thank J. M. Martínez-Agudo for the magnetic measurements. Financial support from the Ministerio de Educación y Ciencia (Project MAT2004-03849 and Programa “Ramón y Cajal” to F.M.R.) and Generalitat Valenciana is also acknowledged.
DS Minerva
RD 24 abr 2026