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Phase transition and structures of the twinned low-temperature phases of (Et(4)N)[ReS(4)]
The title compound, tetraethylammonium tetrathiorhenate, [(C(2)H(5))(4)N][ReS(4)], has, at room temperature, a disordered structure in the space group P6(3) mc (Z = 2, α-phase). A phase transition to the monoclinic space group P2(1) (Z = 2, γ-phase) at 285 K leads to a pseudo-merohedral twin. T...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
International Union of Crystallography
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7057183/ https://www.ncbi.nlm.nih.gov/pubmed/32132280 http://dx.doi.org/10.1107/S205322961901725X |
Sumario: | The title compound, tetraethylammonium tetrathiorhenate, [(C(2)H(5))(4)N][ReS(4)], has, at room temperature, a disordered structure in the space group P6(3) mc (Z = 2, α-phase). A phase transition to the monoclinic space group P2(1) (Z = 2, γ-phase) at 285 K leads to a pseudo-merohedral twin. The high deviation from the hexagonal metric causes split reflections. However, the different orientations could not be separated, but were integrated using a large integration box. Rapid cooling to 110–170 K produces a metastable β-phase (P6(3), Z = 18) in addition to the γ-phase. All crystals of the β-phase are contaminated with the γ-phase. Additionally, the crystals of the β-phase are merohedrally twinned. In contrast to the α-phase, the β- and γ-phases do not show disorder. |
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