Abstract

The title compound, Cs3(Mo2O7)Br, was synthesized by the reaction of CsNO3, MoO3 and 1-ethyl-3-methyl­imidazolium bromide. Its crystal structure is isotypic with K3(Mo2O7)Br and contains (MoO4)2− tetra­hedra which share an O atom to produce a [Mo2O7]2− dimolybdate(VI) anion with a linear bridging angle and m2 symmetry. The anions are linked by Cs atoms (site symmetry m2), forming sheets parallel to (001). Br atoms (site symmetry m2) are also part of this layer. Another type of Cs atom (3m site symmetry) is located in the inter­layer space and connects the layers via Cs—O and Cs—Br inter­actions into a three-dimensional array.

Highlights

  • The title compound, Cs3(Mo2O7)Br, was synthesized by the reaction of CsNO3, MoO3 and 1-ethyl-3-methylimidazolium bromide

  • The anions are linked by Cs atoms, forming sheets parallel to (001)

  • The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry

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Summary

Data collection

St Petersburg State University, Universitetskaya nab. 7/9, 199034 St Petersburg, Russian Federation. R factor = 0.025; wR factor = 0.062; data-to-parameter ratio = 17.2. The title compound, Cs3(Mo2O7)Br, was synthesized by the reaction of CsNO3, MoO3 and 1-ethyl-3-methylimidazolium bromide. Its crystal structure is isotypic with K3(Mo2O7)Br and contains (MoO4) tetrahedra which share an O atom to produce a [Mo2O7]2 dimolybdate(VI) anion with a linear bridging angle and 6m2 symmetry. The anions are linked by Cs atoms (site symmetry 6m2), forming sheets parallel to (001). Br atoms (site symmetry 6m2) are part of this layer. Another type of Cs atom (3m site symmetry) is located in the interlayer space and connects the layers via Cs—O and Cs—.

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Crystal data
Graphite monochromator
Special details
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