0000000000459467
AUTHOR
J. Tarasiewicz
Structural characterization, thermal, dielectric and spectroscopic properties of di(n-pentylammonium) pentabromoantimonate(III): [n-C5H11NH3]2[SbBr5]
Abstract The di( n -pentylammonium) pentabromoantimonate(III) compound has been synthesized and studied by means of a single-crystal X-ray diffraction, differential scanning calorimetry, thermal expansion, dielectric and IR techniques. Two solid–solid phase transitions of first order: at 416/388 K and 225/224 K (heating/cooling) have been revealed. The crystal structure of [ n -C 5 H 11 NH 3 ] 2 [SbBr 5 ] has been solved at 298 K, Pna 2 1 (phase II) and at 86 K P 2 1 2 1 2 1 (phase III). The crystal structure is composed of the SbBr 5 2 - anions which form an infinite chain and four independent n -pentylammonium cations. The dielectric studies have been made in the frequency range 500 Hz–1 …
Structural characterization, thermal, dielectric, vibrational properties and molecular dynamics of (C5H5NH)3BiCl6
Abstract (C5H5NH)3BiCl6 crystallizes at room temperature in the triclinic space group P 1 ¯ . The crystal is built up of the separated BiCl 6 3 - octahedral anions and pyridinium cations. Differential scanning calorimetry (DSC) and dilatometric measurements disclose structural phase transition of first-order type at 265/302 K (cooling/heating). The dielectric investigations reveal a step-wise change of the electric permittivity at Tc characteristic of the crystals with the high-temperature plastic-like phase. Temperature-dependent infrared spectra for polycrystalline samples have been taken between 20 and 306 K to clarify the cation dynamics contribution to the mechanism of the phase transi…
CCDC 631908: Experimental Crystal Structure Determination
Related Article: J.Tarasiewicz, R.Jakubas, J.Zaleski, J.Baran|2008|J.Mol.Struct.|876|86|doi:10.1016/j.molstruc.2007.06.005
CCDC 631907: Experimental Crystal Structure Determination
Related Article: J.Tarasiewicz, R.Jakubas, J.Zaleski, J.Baran|2008|J.Mol.Struct.|876|86|doi:10.1016/j.molstruc.2007.06.005
CCDC 684923: Experimental Crystal Structure Determination
Related Article: J.Tarasiewicz, R.Jakubas, G.Bator, J.Zaleski, J.Baren, W.Medycki|2009|J.Mol.Struct.|932|6|doi:10.1016/j.molstruc.2009.05.034