Proton NMR studies of molecular dynamics in [(CH3)4N]3Bi2X9 (X = Cl and Br)

Rajan, P.K.; Jagadeesh, B.; Venu, K.; Sastry, V. S. S.

doi:10.1016/0038-1098(96)80041-x

Cited by 2 publications

(1 citation statement)

References 16 publications

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“…Alkylammonium halogenoantimonates(III) and bismuthates(III) of the general formula [NH 4−n (CH 3 ) n ] 3 Me 2 X 9 (Me = Sb, Bi, X = Cl, Br, I, n = 1-4) exhibit an interesting order-disorder structural phase transition [1][2][3][4][5][6]. It was shown that the dynamic of organic cations in these crystals significantly changes at the phase transition temperatures, pointing out their important role in the mechanism of transitions.…”

Section: Introductionmentioning

confidence: 99%

Structure and phase transitions in the ferroelastic [C(NH₂)₃]₃Bi₂Br₉crystal

Jakubas

Zaleski

Kosturek

et al. 1999

J. Phys.: Condens. Matter

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Differential scanning calorimetry, dilatometric, dielectric and linear birefringence measurements have been used to study the ferroelastic [C(NH2)3]3Bi2Br9 crystal. The x-ray studies showed that it crystallizes at room temperature in the monoclinic symmetry, space group P21/m. The crystal undergoes a complex sequence of phase transitions: at 311 K, 333.5 K, 350 K, 415 K and 425 K. All phase transitions were found to be of first order type. The ferroelastic domain structure is maintained from room temperature up to 425 K. The temperature measurements of the linear birefringence and optical observations suggest the tetragonal symmetry of the parent paraelastic phase above 425 K.

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Section: Introductionmentioning

confidence: 99%

Structure and phase transitions in the ferroelastic [C(NH₂)₃]₃Bi₂Br₉crystal

Jakubas

Zaleski

Kosturek

et al. 1999

J. Phys.: Condens. Matter

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Preparation and characterisation of high-density ionic liquids incorporating halobismuthate anions

et al. 2014

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A range of ionic liquids containing dialkylimidazolium cations and halobismuthate anions ([BiBr(x)Cl(y)I(z)](-) and [Bi2Br(x)Cl(y)I(z)](-)) were synthesised by combining dialkylimidazolium halide ionic liquids with bismuth(III) halide salts. The majority were room temperature liquids, all with very high densities. The neat ionic liquids and their mixtures with 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide were characterised using Densitometry, Viscometry, NMR Spectroscopy, Electrospray Ionisation Mass Spectrometry (ESI), Liquid Secondary Ion Mass Spectrometry (LSIMS), Matrix-assisted Laser Desorption/Ionization Mass Spectrometry (MALDI), X-Ray Photoelectron Spectroscopy (XPS) and Thermogravimetric Analysis (TGA), to establish their speciation and suitability for high-temperature applications.

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Proton NMR studies of molecular dynamics in [(CH3)4N]3Bi2X9 (X = Cl and Br)

Cited by 2 publications

References 16 publications

Structure and phase transitions in the ferroelastic [C(NH₂)₃]₃Bi₂Br₉crystal

Structure and phase transitions in the ferroelastic [C(NH₂)₃]₃Bi₂Br₉crystal

Preparation and characterisation of high-density ionic liquids incorporating halobismuthate anions

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Proton NMR studies of molecular dynamics in [(CH3)4N]3Bi2X9 (X = Cl and Br)

Cited by 2 publications

References 16 publications

Structure and phase transitions in the ferroelastic [C(NH2)3]3Bi2Br9crystal

Structure and phase transitions in the ferroelastic [C(NH2)3]3Bi2Br9crystal

Preparation and characterisation of high-density ionic liquids incorporating halobismuthate anions

Contact Info

Product

Resources

About

Structure and phase transitions in the ferroelastic [C(NH₂)₃]₃Bi₂Br₉crystal

Structure and phase transitions in the ferroelastic [C(NH₂)₃]₃Bi₂Br₉crystal