Journal of the Physical Society of Japan · 2000 · 25 citations · 16 references
Natural SciencesChemistryMaterials ScienceCrystal StructurePhysical ChemistrySolid State PhysicsCrystal ChemistryCrystal SymmetryCrystallographyStructure DeterminationX-ray CrystallographyX-ray DiffractionCrystal Lattice SymmetryCrystal Structure DeterminationCrystal Structure RefinementCrystal Symmetry DeterminationCrystallographic CharacterizationInorganic CrystalsMetastable EquilibriaTemperature Dependence
The crystal structures of samarium nitrate Sm(NO 3 ) 3 6H 2 O at temperatures 297, 253 and 193 K±1 K were investigated by single crystal X ray diffraction technique. The crystal symmetry at the temperatures was triclinic with space group P \bar1. The structures were solved by using Fourier techniques. The full matrix least-squares refinement for the structure at 297 K led to the residual factors R =0.016 and R w =0.026 for 213 variables and 5078 observed independent reflections. The structures at 253 K and 193 K were solved by using the same methods. The influence of the metastable phenomena on the structures was examined in detail.
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