ChemInform Abstract: Double Molybdates of Sodium and Rubidium.

Mokhosoev, M. V.; Khal'baeva, K. M.; Хайкина, Е. Г.; Ogurtsov, A. M.

doi:10.1002/chin.199045002

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“…According to Mokhosoev et al (1990), the Rb 2 MoO 4 -Na 2 MoO 4 system is characterized by the formation of two intermediate phases. The structure of Rb 3 Na(MoO 4 ) 2 , which has an appreciable homogeneity region in accordance with the formula Rb 2-x Na x MoO 4 (0.50…”

Section: Introductionmentioning

confidence: 99%

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Synthesis, crystal structures and properties of the new compounds K_7–xAg_1+x(XO₄)₄ (X = Mo, W)

et al. 2017

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Two new isostructural compounds, namely heptapotassium silver tetrakis(tetraoxomolybdate), KAg(MoO) (0 ≤ x ≤ 0.4), and heptapotassium silver tetrakis(tetraoxotungstate), KAg(WO) (0 ≤ x ≤ 0.4), have been synthesized and found to crystallize in the polar space group P6mc (Z = 2) with the unit-cell dimensions a = 12.4188 (2) and c = 7.4338 (2) Å for KAg(MoO) (single-crystal data), and a = 12.4912 (5) and c = 7.4526 (3) Å for KAg(WO) (Rietveld analysis data). Both structures represent a new structure type, with characteristic [K1(XO)] `pinwheels' of K1O octahedra and six XO tetrahedra (X = Mo, W) connected by common opposite faces into columns along the c axes. The octahedral columns are linked to each other through Ag1O tetrahedra along with the K2 and K3/Ag2 polyhedra, forming the polar rods (...Ag1O-X1O-empty octahedron-Ag1O...). Ag1 is located almost at the centre of the largest face of its coordination tetrahedron and seems to have some mobility. The new structure type is related to the BaNdAlO and CaBaSiO types, and to other structures of the α-KSO-glaserite family. The differential scanning calorimetry (DSC) and second harmonic generation (SHG) results show that both compounds undergo first-order phase transformations to high-temperature centrosymmetric phases.

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Section: Introductionmentioning

confidence: 99%

“…The second compound in the system, i.e. RbNa 3 (MoO 4 ) 2 , is unstable at room temperature (Mokhosoev et al, 1990). The results of the crystal structure investigation of the glaserite-type Rb 3 Na(XO 4 ) 2 (X = Mo, W) are presented in Bai et al (2014).…”

Section: Introductionmentioning

confidence: 99%

Synthesis, crystal structures and properties of the new compounds K_7–xAg_1+x(XO₄)₄ (X = Mo, W)

et al. 2017

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ChemInform Abstract: Double Molybdates of Sodium and Rubidium.

Abstract: The system Na2MoO4‐Rb2MoO4 is reinvestigated.

Cited by 1 publication

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Synthesis, crystal structures and properties of the new compounds K_7–xAg_1+x(XO₄)₄ (X = Mo, W)

Synthesis, crystal structures and properties of the new compounds K_7–xAg_1+x(XO₄)₄ (X = Mo, W)

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ChemInform Abstract: Double Molybdates of Sodium and Rubidium.

Abstract: The system Na2MoO4‐Rb2MoO4 is reinvestigated.

Cited by 1 publication

References 0 publications

Synthesis, crystal structures and properties of the new compounds K7–x Ag1+x (XO4)4 (X = Mo, W)

Synthesis, crystal structures and properties of the new compounds K7–x Ag1+x (XO4)4 (X = Mo, W)

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Synthesis, crystal structures and properties of the new compounds K_7–xAg_1+x(XO₄)₄ (X = Mo, W)

Synthesis, crystal structures and properties of the new compounds K_7–xAg_1+x(XO₄)₄ (X = Mo, W)