The first ferric carboxylate with a three-dimensional hydrid open-framework (MIL-82): its synthesis, structure, magnetic behavior and study of its dehydration by Mössbauer spectroscopy

• Published in: Solid state sciences 2004-08, Vol.6 (8), p.853-858
• Main Authors: Sanselme, Morgane, Grenèche, Jean-Marc, Riou-Cavellec, Myriam, Férey, Gérard
• Format: Article
• Language: English
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Condensed matter: structure, mechanical and thermal properties; Crystalline state (including molecular motions in solids); Dehydration; Exact sciences and technology; Iron(III) carboxylate; Magnetic properties and materials; Magnetic resonances and relaxations in condensed matter, mössbauer effect; Magnetism; Mössbauer; Mössbauer effect; other γ-ray spectroscopy; Open framework; Physics; Spin arrangements in magnetically ordered materials (including neutron and spin-polarized electron studies, synchrotron-source x-ray scattering, etc.); Structure of solids and liquids; crystallography; Structure of specific crystalline solids; Theory of crystal structure, crystal symmetry; calculations and modeling
• ISSN: 1293-2558; 1873-3085
• DOI: 10.1016/j.solidstatesciences.2004.04.001

The new compound Fe III(OH)[C 6H 2(CO 2) 2(CO 2H) 2]· xH 2O (with x=0.88) is the first ferric carboxylate with a 3D open structure that has been synthesized up to now. Its structure is built up from chains of octahedra connected by carboxylate ligands; it displays small channels filled by water molecules. The removal of water molecules was studied by Mössbauer spectroscopy which set up defaults of water molecules in the crystal. Magnetic measurements indicate an antiferromagnetic behavior at low temperature, but also a metamagnetic transition for an applied magnetic field larger than 0.5 T. Graphic