6533b82cfe1ef96bd128e950
RESEARCH PRODUCT
Structural characterization, thermal, dielectric and vibrational properties of tris(allylammonium) hexabromoantimonate(III), (C3H5NH3)3SbBr6
Agata BiałońskaJakub BaranRyszard JakubasIwona PłowaśBartosz ZarychtaGrażyna Batorsubject
CrystallographyPhase transitionChemistryPhase (matter)X-ray crystallographyGeneral Physics and AstronomySpace groupCrystal structurePhysical and Theoretical ChemistryAtmospheric temperature rangeHybrid materialMonoclinic crystal systemdescription
Abstract The novel inorganic–organic hybrid material, allylammonium hexabromoantimonate(III), (C3H5NH3)3SbBr6, has been synthesized and its structure has been determined by means of the single-crystal X-ray diffraction studies at five temperatures (273, 248, 220, 170 and 100 K). At room temperature the compound crystallizes in the monoclinic space group, C2/m. Its crystal structure is composed of the discrete SbBr 6 3 - anions and three non-equivalent allylammonium, (C3H5NH3)+, cations. In (C3H5NH3)3SbBr6 three solid–solid structural phase transitions are detected: a continuous one at 260/256 K (on heating–cooling) from phase I to II, a discontinuous one at 227/208 K (II→III) and another discontinuous at 197/191 K (III→IV). The electric properties of the compound have been measured in a wide temperature region (150–300 K). Temperature-dependent vibrational properties in the frequency region 3500–500 cm−1 have been reviewed. Possible mechanisms of the phase transitions in (C3H5NH3)3SbBr6 are discussed on the basis of the presented results.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-09-01 | Chemical Physics |