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Rb(2)Sb(4)O(11).

Govindaraasan Kalpana¹, Mark T Weller

¹School of Chemistry, University of Southampton, Highfield Campus, Southamtpon SO17 1BJ, England.

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|May 18, 2011

Summary

This summary is machine-generated.

Dirubidium tetra-antimonate(V), Rb(2)Sb(4)O(11), was synthesized and characterized. This new compound features a layered structure with tunnels accommodating rubidium ions, expanding the known family of related antimonate materials.

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Area of Science:

Solid-state chemistry
Inorganic chemistry
Crystallography

Background:

Antimonates with the general formula A(2)Sb(4)O(11) are known for their diverse structural motifs.
Understanding the structural variations and cation-site preferences in these compounds is crucial for materials science.

Purpose of the Study:

To synthesize and determine the crystal structure of a new dirubidium tetra-antimonate(V) compound.
To investigate its structural relationship with isotypic alkali metal antimonates.

Main Methods:

Flux reaction synthesis method.
Single-crystal X-ray diffraction analysis to determine the atomic arrangement and symmetry.

Main Results:

Successful synthesis of dirubidium tetra-antimonate(V), Rb(2)Sb(4)O(11).
The structure consists of a layered (Sb(4)O(11))(2-) framework built from edge- and corner-sharing SbO(6) octahedra.
Rb(+) cations reside in tunnels formed by the stacking of these layers, exhibiting coordination numbers of nine and ten.
Specific atoms occupy special crystallographic positions with m and 2 symmetry.

Conclusions:

Dirubidium tetra-antimonate(V) is isotypic with potassium and cesium analogues, confirming a common structural theme.
The layered structure with tunnels provides a framework for accommodating alkali metal cations.
The crystallographic details offer insights into structure-property relationships in this class of inorganic compounds.