Structural characterization, thermal, dielectric and spectroscopic properties of di(n-pentylammonium) pentabromoantimonate(III): [n-C5H11NH3]2[SbBr5]

Tarasiewicz, J.; Jakubas, R.; Zaleski, Jacek; Baran, J.

doi:10.1016/j.molstruc.2007.06.005

Cited by 35 publications

(15 citation statements)

References 19 publications

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“…Thus, as a rule, in such a type of compounds their room temperature phases are partially or completely ordered. In the case of halogenoantimonates(III) and halogenobismuthates(III) containing in their crystal structure the bulky alkylammonium cations (n-propyl-, n-butyl-, iso-butyl-or n-pentylammonium ones) the phase situation is very complex because the cations are able to perform various types of motion [24][25][26]. The freedom of motion depends on the size and symmetry of the alkyl groups of the cations.…”

Section: Introductionmentioning

confidence: 99%

Structural characterization, thermal, dielectric and vibrational properties of tris(allylammonium) hexabromoantimonate(III), (C3H5NH3)3SbBr6

et al. 2010

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Section: Introductionmentioning

confidence: 99%

Structural characterization, thermal, dielectric and vibrational properties of tris(allylammonium) hexabromoantimonate(III), (C3H5NH3)3SbBr6

et al. 2010

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“…The observed change of the modes assigned to the internal vibrations of the 2,4‐diammonium toluene cations close to the phase transition temperature (I to II) and (II to III) at 358 and 393 K, respectively, is undoubtedly connected with the change in the dynamics of the cationic sublattice. For most of analyzed bands, the observed changes around the temperature of phase transitions have a stepwise character typical of discontinuous phase transitions …”

Section: Resultsmentioning

confidence: 99%

Phase transitions in (C₇H₁₂N₂)₂[SnCl₆]Cl₂·1.5H₂O crystal, studied by NMR and infrared spectroscopy

Hajji

Hlel

2019

Magnetic Reson in Chemistry

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The (C 7 H 12 N 2 ) 2 [SnCl 6 ]Cl 2 ·1.5H 2 O complex is a new member of the family of hybrid organic-inorganic perovskite compounds. It exhibits two orderdisorder phase transitions with changes in the conformation of aromatic cations at the two transition temperatures 360 and 412 K. Differential scanning calorimetry, nuclear magnetic resonance (NMR), and Fourier-transform infrared (FT-IR) spectroscopy were used to investigate these phase transitions. These transition mechanisms were investigated in terms of the spin-lattice relaxation times T1 for 1 H static NMR and the chemical shifts for 13 C CP-MAS. The temperature dependence of T1( 1 H) and 13 C chemical shifts are changed near T C1 and T C2 . Furthermore, the splitting for 13 C NMR signals in Phases (II) and (III) indicated a ferroelastic characteristic of the compound. In addition, FT-IR results indicate that the ordered conformational structure of aromatic cations undergoes a remarkable disorder with increasing temperature. The NMR and FT-IR studies suggest that the phase transition mechanisms are related to the reorientational motion of [C 7 H 12 N 2 ] 2+ cations as a whole. Phase transition was examined in light of the interesting optical properties of this material.

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“…5. The assignment of the internal modes of the organic cations is based on the comparison with the well-documented spectra of the homologous compounds [17,18]. The IR spectra show, at high wavenumbers, an absorption that is centered at 3,035 cm -1 assignable to m s (NH 3 ?…”

Section: Infrared Investigationmentioning

confidence: 99%

Synthesis, Crystal Structure, Thermal and Dielectric Properties of a New Semi-organic Crystal: 2[N(2-Aminoethyl)-1,3-propanediaminium] octachlorodimercurate, tetrachloromercurate

Baklouti

Zouari

2014

J Clust Sci

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A novel semi-organic hybrid material, (C 5 H 18 N 3 ) 2 Hg 2 Cl 8 ÁHgCl 4 , was synthesized, and its structure was determined at room temperature in the noncentrosymmetric monoclinic space group P2 1 2 1 2 1 with the following parameters: a = 21.0921(7), b = 11.7288(4), c = 12.6801(5) Å , Z = 4. Its crystal structure was determined and refined down to R = 0.0549 and Rw = 0.1303. The examination of the structure shows a layer arrangement parallel to the b axis: the anionic layer may be considered as a succession of layers built up distorted triangular bipyramid [HgCl 3 ] -. The crystal packing is governed by means of the ionic N-H…Cl hydrogen bonds, forming a three dimensional network. DSC measurement reveals a transition at T = 418 K and dielectric measurements were performed to discuss the mechanism of the phase transition. The evolution of dielectric constant as a function of temperature of single crystal has been investigated in order to determine some related parameters.

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Structural characterization, thermal, dielectric and spectroscopic properties of di(n-pentylammonium) pentabromoantimonate(III): [n-C5H11NH3]2[SbBr5]

Cited by 35 publications

References 19 publications

Structural characterization, thermal, dielectric and vibrational properties of tris(allylammonium) hexabromoantimonate(III), (C3H5NH3)3SbBr6

Structural characterization, thermal, dielectric and vibrational properties of tris(allylammonium) hexabromoantimonate(III), (C3H5NH3)3SbBr6

Phase transitions in (C₇H₁₂N₂)₂[SnCl₆]Cl₂·1.5H₂O crystal, studied by NMR and infrared spectroscopy

Synthesis, Crystal Structure, Thermal and Dielectric Properties of a New Semi-organic Crystal: 2[N(2-Aminoethyl)-1,3-propanediaminium] octachlorodimercurate, tetrachloromercurate

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Structural characterization, thermal, dielectric and spectroscopic properties of di(n-pentylammonium) pentabromoantimonate(III): [n-C5H11NH3]2[SbBr5]

Cited by 35 publications

References 19 publications

Structural characterization, thermal, dielectric and vibrational properties of tris(allylammonium) hexabromoantimonate(III), (C3H5NH3)3SbBr6

Structural characterization, thermal, dielectric and vibrational properties of tris(allylammonium) hexabromoantimonate(III), (C3H5NH3)3SbBr6

Phase transitions in (C7H12N2)2[SnCl6]Cl2·1.5H2O crystal, studied by NMR and infrared spectroscopy

Synthesis, Crystal Structure, Thermal and Dielectric Properties of a New Semi-organic Crystal: 2[N(2-Aminoethyl)-1,3-propanediaminium] octachlorodimercurate, tetrachloromercurate

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Phase transitions in (C₇H₁₂N₂)₂[SnCl₆]Cl₂·1.5H₂O crystal, studied by NMR and infrared spectroscopy