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Related Experiment Video

Updated: May 21, 2026

Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of Chalcogenidoplumbates(II or IV)

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Published on: December 29, 2016

Quaternary tellurides with different valent Ge centers: Cs2Ge3M6Te14 (M = Ga, In).

Cheng-Yi Zhang¹, Liu-Jiang Zhou, Ling Chen

¹Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, People's Republic of China.

Inorganic Chemistry

|June 19, 2012

Summary

New quaternary tellurides, Cs(2)Ge(3)M(6)Te(14) (M = Ga, In), were synthesized, featuring a novel 3D anionic framework. This discovery expands the known family of germanium-based telluride materials.

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Published on: July 26, 2016

Area of Science:

Solid-state chemistry
Inorganic materials science
Crystallography

Background:

Quaternary tellurides are an important class of inorganic compounds.
Germanium-based materials exhibit diverse structural and electronic properties.

Purpose of the Study:

To discover and characterize new quaternary telluride compounds.
To investigate the structural features of the Cs(2)Ge(3)M(6)Te(14) system.

Main Methods:

Solid-state synthesis reactions.
Single-crystal X-ray diffraction for structural determination.
Electron localization function calculations and X-ray photoelectron spectroscopy for electronic structure analysis.

Main Results:

Successful synthesis of two new quaternary tellurides: Cs(2)Ge(3)Ga(6)Te(14) and Cs(2)Ge(3)In(6)Te(14).
These compounds crystallize in the P3ml space group, forming a novel three-dimensional [Ge(3)M(6)Te(14)](2-) anionic framework.
Evidence for germanium centers with distinct oxidation states (Ge(2+) and Ge(3+)) was obtained.

Conclusions:

The discovery of Cs(2)Ge(3)M(6)Te(14) expands the known structural chemistry of quaternary tellurides.
The complex anionic framework highlights novel bonding arrangements in germanium-telluride systems.
The presence of mixed-valent germanium suggests potential for interesting electronic properties.