Hydrothermal Synthesis of the Oxofluoride FeSbO2F2-An Anti-ferromagnetic Spin S = 5/2 Compound.
The new oxofluoride compound FeSbO2F2was synthesized by hydrothermal techniques at 230 °C. Its crystal structure was determined from single-crystal X-ray diffraction data. The compound crystallizes in the monoclinic space group C2/c with one crystallographic site for Fe3+and Sb3+, respectively. The crystal structure is made of [FeO2F4] octahedra and seesaw [SbO4] building blocks. These are connected to form [FeO2F2]nlayers and [SbO2]nchains that bond together via the oxygen atoms to form the three-dimensional framework structure. Magnetic susceptibility and heat capacity measurements indicate long-range anti-ferromagnetic ordering below a Néel temperature of ∼175 K. Two-dimensional anti-ferromagnetic short-range order in the square planar net of the Fe3+cations extends to temperatures far above the Néel temperature.
Department of Materials and Environmental Chemistry, Stockholm University , SE-106 91 Stockholm, Sweden.
Sk Imran
SI
Ali
Max Planck Institute for Solid State Research , Heisenbergstrasse 1, Stuttgart D-70568, Germany.
Reinhard K
RK
Kremer
Department of Materials and Environmental Chemistry, Stockholm University , SE-106 91 Stockholm, Sweden.
Mats
http://orcid.org/0000-0003-4319-1540
M
Johnsson