Tetracaesium Ytterbium Heptachloride with Partly Disordered Chloride Ions

Reuter, G.; Sebastian, Jörg; Frenzen, G.

doi:10.1107/s0108270196003137

Cited by 10 publications

(2 citation statements)

References 3 publications

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“…The greatest hindrance for ample exploration of these materials is their sensitivity against moisture. This is especially the case for alkali halide/rare-earth halide systems, although there might be some hope in further explorations because, surprisingly, some of these phases are known to crystallize even from aqueous solutions, for example, some of the elpasolites of the Cs 2 NaMCl 6 type or a chloride like Cs 4 YbCl 7 . Halides with divalent lanthanides are also sensitive to the oxygen in the air, especially at elevated temperatures.…”

Section: Properties and Potentialsmentioning

confidence: 99%

The Alkali-Poor Part of the Pseudoternary Triangle AX/BX₂/MX₃: Crystal Structures, Properties, and Potentials of (Alkali)/Alkaline-Earth/Rare-Earth Chloride Materials

Meyer

Masselmann

1998

Chem. Mater.

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Halides of mono-, di-, and trivalent metals of the general formulas AX, BX2, and MX3 may react with each other, forming a large variety of ternary and even quaternary phases in the solid state. Aside from the alkali-poor quaternary chlorides of the ABMX6 type, which are derivatives of the UCl3 type of structure, the alkali cation free pseudoternary chlorides that form in the systems BCl2/MCl3, especially with B = Ba, are reviewed. Examples of ternary chlorides are Ba2EuCl7, with isolated [EuCl7] monocapped trigonal prisms; Ba2Cl[ScCl6], with isolated octahedra [ScCl6] and lonesome Cl-; Ba8[{(Sm6)Z}Cl32], and Ba9[{(Sm6)Z}Cl34], with Z being presumably an oxide ion residing in the large hole of the [Sm6Cl36] polyhedral clusters that occur in these fluorite type superstructures; and, finally, BaGdCl5, with corrugated layers of edge-connected [GdCl8] square antiprisms. These halides may be cationic conductors (AgSrSmCl6), insulating mixed-valence halides such as NaNd2Cl6, or semiconductors such as Pr2Br5 with interesting magnetic ordering at lower temperatures, or they may serve as hosts for luminescent ions. Ba2ErCl7, for example, is an efficient near-infrared to near-ultraviolet upconversion material.

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Section: Properties and Potentialsmentioning

confidence: 99%

The Alkali-Poor Part of the Pseudoternary Triangle AX/BX₂/MX₃: Crystal Structures, Properties, and Potentials of (Alkali)/Alkaline-Earth/Rare-Earth Chloride Materials

Meyer

Masselmann

1998

Chem. Mater.

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“…This compounds can be prepared from aqueous solution with Ln = HoYb [8]. They decompose, again kinetically irreversible, at -250~ to CsCI and Cs3LnC16 in C2/c.…”

Section: Thermal Hysteresismentioning

confidence: 99%

Retarded solid state reactions III [1]

Seifert

1997

Journal of Thermal Analysis

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Solid state reactions and reconstructive phase transitions exhibit more or less a large hysteresis between reaction temperatures taken from DTA-heating and -cooling curves. For ternary lanthanide chlorides the equilibrium temperatures could be obtained by e.m.f.-measurements in galvanic chlorine cells for solid electrolytes using A+-ion (A = alkaline metal) conducting diaphragms. By quenching, high-temperature phases can often be transformed to metastable roomtemperature phases. In this case the equilibrium state must be established by annealing at sufficiently high temperature, or it must be tried to synthesize the compound in its stability range from suitable precursor systems.

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Hydrolysis Reaction‐Induced Phase Regulation of Sb‐doped Zero‐Dimensional Perovskite Cs–In–Cl Nanocrystals for Optoelectronic and Information Encryption Applications

Li,

Liu,

Tong

et al. 2024

Adv Funct Materials

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Phase‐controlled synthesis of all‐inorganic perovskite nanocrystals (NCs) has attracted extensive attention for optoelectronic applications. However, H2O, often considered an unfavorable factor, has not been found to influence the resulting phase composition. Herein, the hydrolysis reaction‐induced phase regulation of 0D perovskite Cs–In–Cl: Sb NCs by manipulating the H2O addition is reported. Specifically, Cs–In–Cl: Sb crystallizes as Cs3InCl6: Sb in the absence of H2O addition. In contrast, the addition of H2O triggers the hydrolysis of the injected chlorine source (phenylphosphonic dichloride, PhPOCl2), resulting in an increased concentration of Cl− ions and subsequently promoting the formation of Cs4InCl7: Sb NCs. Moreover, the hydrogen bonds formed between isopropanol (IPA) and H2O/oleic acid (OA)/oleylamine (OAm) mitigate the immiscibility between the 1‐octadecene (ODE)/OA/OAm mixture and H2O, which facilitates the passivation of OA/OAm on the Cs4InCl7: Sb NCs. Additionally, it is demonstrated that a reversible phase transition between Cs4InCl7: Sb and Cs3InCl6: Sb can be achieved by heating–cooling cycles. Furthermore, the application for white light‐emitting diodes, information encryption, and fluorescent composite films based on Cs4InCl7: Sb NCs is showcased. This work not only paves a new strategy to regulate the phase composition of perovskites but also introduces a novel fluorescent material of Cs4InCl7: Sb for multifunctional applications.

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Tetracaesium Ytterbium Heptachloride with Partly Disordered Chloride Ions

Cited by 10 publications

References 3 publications

The Alkali-Poor Part of the Pseudoternary Triangle AX/BX₂/MX₃: Crystal Structures, Properties, and Potentials of (Alkali)/Alkaline-Earth/Rare-Earth Chloride Materials

The Alkali-Poor Part of the Pseudoternary Triangle AX/BX₂/MX₃: Crystal Structures, Properties, and Potentials of (Alkali)/Alkaline-Earth/Rare-Earth Chloride Materials

Retarded solid state reactions III [1]

Hydrolysis Reaction‐Induced Phase Regulation of Sb‐doped Zero‐Dimensional Perovskite Cs–In–Cl Nanocrystals for Optoelectronic and Information Encryption Applications

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Tetracaesium Ytterbium Heptachloride with Partly Disordered Chloride Ions

Cited by 10 publications

References 3 publications

The Alkali-Poor Part of the Pseudoternary Triangle AX/BX2/MX3: Crystal Structures, Properties, and Potentials of (Alkali)/Alkaline-Earth/Rare-Earth Chloride Materials

The Alkali-Poor Part of the Pseudoternary Triangle AX/BX2/MX3: Crystal Structures, Properties, and Potentials of (Alkali)/Alkaline-Earth/Rare-Earth Chloride Materials

Retarded solid state reactions III [1]

Hydrolysis Reaction‐Induced Phase Regulation of Sb‐doped Zero‐Dimensional Perovskite Cs–In–Cl Nanocrystals for Optoelectronic and Information Encryption Applications

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Product

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About

The Alkali-Poor Part of the Pseudoternary Triangle AX/BX₂/MX₃: Crystal Structures, Properties, and Potentials of (Alkali)/Alkaline-Earth/Rare-Earth Chloride Materials

The Alkali-Poor Part of the Pseudoternary Triangle AX/BX₂/MX₃: Crystal Structures, Properties, and Potentials of (Alkali)/Alkaline-Earth/Rare-Earth Chloride Materials