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RESEARCH PRODUCT
ChemInform Abstract: Crystal Structure and Magnetic Properties of α-Mn(H2PO2)2× H2O.
Pedro AmorósMaría D. MarcosD. BeltranFernando Sapiñasubject
CrystallographychemistryOctahedronRietveld refinementAntiferromagnetismchemistry.chemical_elementGeneral MedicineManganeseCrystal structureIsostructuralPowder diffractionMonoclinic crystal systemdescription
Abstract The crystal structure of α-Mn(H2PO2)2·H2O has been refined from X-ray powder diffraction data. The cell is monoclinic (space group P21/c, Z − 4) with α = 7.8601(3) A , b = 7.4411(3) A , c = 10.7717(4) A and β = 102.859(2)°. The structure was refined with the Rietveld refinement principles, using as starting model the parameters of the presumably isostructural compound Zn(H2PO2)2·H2O. The structure can be described as being formed by dimeric entities Mn2O2 of edge-sharing manganese octahedra. Each group is linked through Mn-O-P-O-Mn bridges to four other groups, resulting in a three-dimensional network. The thermal variation in the susceptibility shows a sharp peak at T = 6.5 K and the representation of the XT product vs. temperature shows clear antiferromagnetic behaviour.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-08-21 | ChemInform |