Synthesis, crystal structures, and properties of new acentric glaserite-related compounds Rb7Ag5–3Sc2+(XO4)9 (X = Mo, W)

Spiridonova, Tatyana S.; Солодовников, С. Ф.; Мolokeev, Maxim S.; Солодовникова, З. А.; Savina, Aleksandra A.; Kadyrova, Yulia M.; Sukhikh, A. S.; Kovtunets, Evgeniy V.; Хайкина, Е. Г.

doi:10.1016/j.jssc.2021.122638

Cited by 9 publications

(9 citation statements)

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“…Similar "lanterns" [M2(TO4)9] (M is an octahedrally coordinated cation, TO4 is a tetrahedral oxoanion), and hexagonal layers formed by them also characterize the structures of previously studied Ag5Rb7Sc2(MoO4)9, Ag5Rb7Sc2(WO4)9 and Na5Cs7Yb2(MoO4)9 [21]. The relationship between structure of the considered family M′5M″7R2(XO4)9 (X = Mo, W) and many rhombohedral triple molybdates and tungstates with а = 9-10 Å and large c-periods (more than 20 Å) was discussed in [21].…”

Section: Resultsmentioning

confidence: 81%

“…gr. R32, Z = 3) [21,22]. This allows satisfactorily indexing the PXRD patterns of Na5Rb7Sc2(ХO4)9 (Х = Mo, W) (in the case of molybdate F(30) = 141.6 (0.0056; 38), for tungstate F(30) = 287.2 (0.0028; 37)).…”

Section: Resultsmentioning

confidence: 94%

“…The obtained crystallo-graphic characteristics are shown in Table 1, the results of indexing of Na5Rb7Sc2(WO4)9 are shown in Table 2 as an example. The positional atomic parameters for the Ag5Rb7Sc2(MoO4)9 structure [21] were taken as a starting model for the refinement of the Na5Rb7Sc2(ХO4)9 (Х = Mo, W) structures by the Rietveld method. The refinement was carried out by gradually adding the refined parameters with the simultaneous graphical simulation of the background.…”

Section: Resultsmentioning

confidence: 99%

“…[20], Ag5Rb7Sc2(XO4)9 (X = Mo, W) [21] that formed their own structural types are considered to be promising solid state electrolytes.…”

Section: Introductionmentioning

confidence: 99%

“…In this work, the family of triple molybdates and tungstates represented by formula M′5M″7R2(XO4)9 [21,22] is extended by two new compounds, Na5Rb7Sc2(XO4)9 (X = Mo, W). The primary characterization of these phases was carried out.…”

Section: Introductionmentioning

confidence: 99%

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New triple molybdate and tungstate Na₅Rb₇Sc₂(XO₄)₉ (X = Mo, W)

et al. 2021

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New compounds of the composition Na5Rb7Sc2(XO4)9 (X = Mo, W) were obtained via the ceramic technology. The sequences of chemical transformations occurring during the formation of these compounds were established, and their primary characterization was performed. Both Na5Rb7Sc2(XO4)9 (X = Mo, W) were found to melt incongruently at 857 K (X = Mo) and 889 K (X = W). They are isostructural to Ag5Rb7Sc2(XO4)9 (X = Mo, W), Na5Cs7Ln2(MoO4)9 (Ln = Tm, Yb, Lu) and crystallize in the trigonal crystal system (sp. gr. R32). The crystal structures were refined with the Rietveld method using the powder X-ray diffraction data. The thermal expansion of Na5Rb7Sc2(WO4)9 was studied by high-temperature powder X-ray diffraction; it was shown that this triple tungstate belongs to high thermal expansion materials.

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Section: Resultsmentioning

confidence: 81%

Section: Resultsmentioning

confidence: 94%

Section: Resultsmentioning

confidence: 99%

“…[20], Ag5Rb7Sc2(XO4)9 (X = Mo, W) [21] that formed their own structural types are considered to be promising solid state electrolytes.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%