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Synthesis of Nine-atom Deltahedral Zintl Ions of Germanium and their Functionalization with Organic Groups

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I(8)Sb(10)Ge(36).

Mohammed Kars, Thierry Roisnel, Vincent Dorcet

Acta Crystallographica. Section E, Structure Reports Online

|May 18, 2011

Summary

This summary is machine-generated.

Single crystals of octa-iodide deca-anti-monate hexa-tria-conta-germanide were synthesized. This compound features a unique clathrate-I structure with guest iodine atoms encapsulated within polyhedral frameworks.

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Theoretical Calculation and Experimental Verification for Dislocation Reduction in Germanium Epitaxial Layers with Semicylindrical Voids on Silicon

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Area of Science:

Solid-state chemistry
Crystal engineering
Materials science

Background:

Clathrate compounds are known for their unique cage-like structures.
Germanide and antimonide frameworks can host guest atoms.
Understanding guest-host interactions is crucial for materials properties.

Purpose of the Study:

To synthesize and characterize single crystals of octa-iodide deca-anti-monate hexa-tria-conta-germanide.
To elucidate the crystal structure and atomic arrangement of this novel compound.
To investigate the incorporation of guest iodine atoms within the framework.

Main Methods:

Single crystal growth via chemical transport reactions.
X-ray crystallography for structure determination.
Analysis of atomic site occupancy and coordination.

Main Results:

The compound crystallizes in a structure isotypic with clathrates-I.
A (Ge,Sb)(46) framework with statistically occupied Ge and Sb sites forms polyhedra.
Two distinct polyhedra, a dodecahedron ((Ge,Sb)(20)) and a tetra-cosa-hedron ((Ge,Sb)(24)), exist in a 1:3 ratio.
Guest iodine atoms occupy specific sites within these polyhedra.

Conclusions:

The synthesis yielded single crystals of the title compound.
The determined structure reveals a complex clathrate framework hosting iodine guests.
The findings contribute to the understanding of germanide-antimonide clathrate structures and guest atom encapsulation.