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Related Experiment Video

Updated: Jun 1, 2026

Preparation and Reactivity of a Triphosphenium Bromide Salt: A Convenient and Stable Source of Phosphorus(I)

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Published on: November 22, 2016

Tricaesium dimolybdate(VI) bromide.

Anna S Pakhomova¹, Sergey V Krivovichev

¹St Petersburg State University, Universitetskaya nab. 7/9, 199034 St Petersburg, Russian Federation.

Acta Crystallographica. Section E, Structure Reports Online

|May 18, 2011

Summary

Researchers synthesized a novel cesium dimolybdate bromide compound, Cs(3)(Mo(2)O(7))Br. This new material features a unique layered structure with dimolybdate anions and cesium cations, forming a 3D array.

Area of Science:

Inorganic Chemistry
Solid-State Chemistry
Crystal Engineering

Background:

Dimolybdate anions are known building blocks in inorganic materials.
Cesium compounds often exhibit interesting structural and electronic properties.
Halide incorporation can tune material characteristics.

Purpose of the Study:

To synthesize and characterize a new cesium dimolybdate bromide compound.
To elucidate the crystal structure and bonding of Cs(3)(Mo(2)O(7))Br.
To understand the role of cesium and bromide in the material's architecture.

Main Methods:

Solid-state synthesis reaction involving cesium nitrate, molybdenum trioxide, and an imidazolium bromide salt.
Single-crystal X-ray diffraction for crystal structure determination.

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Analysis of coordination environments and bonding interactions.

Main Results:

The title compound, Cs(3)(Mo(2)O(7))Br, was successfully synthesized.
The crystal structure is isotypic with K(3)(Mo(2)O(7))Br.
The structure comprises [Mo(2)O(7)](2-) dimolybdate(VI) anions linked by Cs atoms and Br atoms into layered sheets, further connected into a 3D array via inter-layer Cs-O and Cs-Br interactions.

Conclusions:

Cs(3)(Mo(2)O(7))Br represents a new layered inorganic compound.
The dimolybdate anion exhibits linear bridging and m2 symmetry.
Cesium and bromide ions play crucial roles in assembling the 3D framework through diverse interactions.