Bulletin of the Chemical Society of Japan · 1988 · 48 citations · 15 references
Natural SciencesChemistryMaterials ScienceInorganic ChemistrySolid-state ChemistrySpectroscopyCrystal ChemistryInorganic SpectroscopyMössbauer SpectroscopyPerovskite MaterialsPhase TransitionsPerovskite Crystal Structure
Abstract Successive phase transitions were observed for CsSnBr3 and CH3NH3SnBr3 by means of 81Br NQR and DTA. These compounds are isomorphous with each other and have typical cubic perovskite structures at room temperature. However, with decreasing temperature both compounds showed successive phase transitions and complex 81Br NQR spectra at 77 K. In the case of CH3NH3SnBr3, both 81Br NQR and 119Sn Mössbauer spectra changed markedly with decreasing temperature from those at room temperature. These findings suggested a large distortion of the SnBr6 octahedron from the regular one and were interpreted on the basis of the three-center-four-electron bond model. In relation to these structural changes, a broad-line 1H NMR experiment on CH3NH3SnBr3 was also observed in order to determine the effect of the dynamic properties of the cation.
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Structure and Phase Transition in (CH3NH3)3Sb2Cl9
R. Jakubas, Z. Czapla, Zbigniew Galewski et al. · physica status solidi (a) · 1986 · 92 citations
Crystal Structure and Phase Transition of Cesium Trichlorostannate(II).
Finn Reibke Poulsen, Svend Erik Rasmussen, Arne Haaland et al. · Acta chemica Scandinavica/Acta chemica Scandinavica. B, Organic chemistry and biochemistry/Acta chemica Scandinavica. A, Physical and inorganic chemistry/Acta chemica Scandinavica. Series B. Organic chemistry and biochemistry/Acta chemica Scandinavica. Series A, Physical and inorganic chemistry · 1970 · 68 citations · Full text