Phase transitions in [Ni(NH3)6](NO3)2

Трыбула, З.; Stankowski, J.

doi:10.1016/0921-4526(88)90021-x

Cited by 7 publications

(3 citation statements)

References 12 publications

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“…The reported results complement a poor basis of theoretical data available in the field of vibrational spectroscopy of Werner-type ammonia complexes, which are being still extensively studied mainly in the context of the phase transitions and their connection with ammonia ligands and nitrate(V) anions reorientational dynamics [1][2][3][4][5][6][7][8][9]. The family of hexammine complexes is particularly interesting as inorganic phase-change materials (PCMs), with their potential application in encapsulated energy storage systems.…”

Section: Introductionsupporting

confidence: 69%

Experimental (FT-IR and FT-RS) and theoretical (DFT) studies of molecular structure and internal modes of [Mn(NH3)6](NO3)2

Drużbicki

Mikuli

2010

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

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Section: Introductionsupporting

confidence: 69%

Experimental (FT-IR and FT-RS) and theoretical (DFT) studies of molecular structure and internal modes of [Mn(NH3)6](NO3)2

Drużbicki

Mikuli

2010

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

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“…[11] using the EPR and dilatometric methods, by Piekara-Sady et al [12] using dilatometric method, by Fimland et al [13] using the dielectric method, by Trybula and Stankowski [14] using also dielectric method and by Czaplicki et al [15] using the nuclear magnetic resonance method.…”

Section: Introductionmentioning

confidence: 99%

Connection between Reorientational Motions of NH₃Groups and Phase Transitions in [Ni(NH₃)₆](NO₃)₂and [Mg(NH₃)₆](NO₃)₂Compounds

Migdał-Mikuli

Mikuli

1995

Acta Phys. Pol. A

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Quasielastic neutron scattering data for [Νi(ΝH3 ) 6 ](ΝO3 ) 2 and [Mg(ΝH3 )6 ](NO3 )2 were subjected to a new analysis. On the basis of the excess of intensity of elastic component observed in these spectra in comparison to the intensity of this component resulting from the applied reorientational model this analysis determined temperature dependence of the new "R" parameter. This parameter gives us information concerning the number of these NH3 groups which in the [Me(NΗ3 ) 6 ]2+ catioii reorientate with the correlation time of order of 10 -12 s. It has been ascertained that in phases I and II of both substances under study all NH3 groups reorientate fast (R = 6ΝH3 groups), whereas in phases III and IV only part of these groups reorientate fast (R = 3ΝΗ3 groups -in the case of [Νi(ΝΗ3 )

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“…A similar phase transition has been observed, for instance, in the ionic crystal Ni(NH 3 ) 6 (NO 3 ) 2 . There, at T c = 244 K (on cooling) there is a discontinuous change in the lattice parameter during Fm3m → Pa3 symmetry reduction [8]. Additionally, a hysteresis typical of a structural phase transition of the first order of T = 6 K, is observed.…”

Section: Introductionmentioning

confidence: 93%

The influence of air on the structural phase transition in fullerene C₆₀

Трыбула

Łoś²,

Kempiński³

et al. 2009

J. Phys.: Condens. Matter

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A dielectric study of the structural phase transition from cubic fcc ([Formula: see text]) to simple cubic sc [Formula: see text] at T = 260 K in a fullerene C(60) monocrystal as well as the influence of absorbed oxygen on T(c) are presented. For the first time the results of dielectric measurements of a C(60) monocrystal without any oxygen trapped inside showed a typical first order structural phase transition. It has been shown that absorbed oxygen affects the mechanism of the structural phase transition at T(c) = 260 K in the C(60) single crystal. In the cooling run, the electric permittivity ε' in the vicinity of phase transition decreases for the oxygen free C(60) monocrystal whereas it increases for the C(60) crystal exposed to oxygen.

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Phase transitions in [Ni(NH3)6](NO3)2

Cited by 7 publications

References 12 publications

Experimental (FT-IR and FT-RS) and theoretical (DFT) studies of molecular structure and internal modes of [Mn(NH3)6](NO3)2

Experimental (FT-IR and FT-RS) and theoretical (DFT) studies of molecular structure and internal modes of [Mn(NH3)6](NO3)2

Connection between Reorientational Motions of NH₃Groups and Phase Transitions in [Ni(NH₃)₆](NO₃)₂and [Mg(NH₃)₆](NO₃)₂Compounds

The influence of air on the structural phase transition in fullerene C₆₀

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Phase transitions in [Ni(NH3)6](NO3)2

Cited by 7 publications

References 12 publications

Experimental (FT-IR and FT-RS) and theoretical (DFT) studies of molecular structure and internal modes of [Mn(NH3)6](NO3)2

Experimental (FT-IR and FT-RS) and theoretical (DFT) studies of molecular structure and internal modes of [Mn(NH3)6](NO3)2

Connection between Reorientational Motions of NH3Groups and Phase Transitions in [Ni(NH3)6](NO3)2and [Mg(NH3)6](NO3)2Compounds

The influence of air on the structural phase transition in fullerene C60

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Connection between Reorientational Motions of NH₃Groups and Phase Transitions in [Ni(NH₃)₆](NO₃)₂and [Mg(NH₃)₆](NO₃)₂Compounds

The influence of air on the structural phase transition in fullerene C₆₀