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Synthesis of Nine-atom Deltahedral Zintl Ions of Germanium and their Functionalization with Organic Groups
Published on: February 11, 2012
Na(5)Sn(13): A New Zintl Phase with a Complex Network Structure Constructed from Tin Pentagons
J. T. Vaughey1, John D. Corbett
1Ames Laboratory(1) and Department of Chemistry, Iowa State University, Ames, Iowa 50011.
Inorganic Chemistry
|October 24, 2001
Summary
The sodium-tin compound Na(5)Sn(13) was synthesized at 280°C. Its complex structure and diamagnetic properties were detailed, revealing a Zintl phase with a closed-shell electronic configuration.
Area of Science:
- Solid-state chemistry
- Inorganic materials science
- Crystallography
Background:
- The sodium-tin system is known for complex intermetallic compounds.
- Understanding Zintl phases is crucial for materials design.
Purpose of the Study:
- To synthesize and characterize a novel sodium-tin compound.
- To elucidate the crystal structure and electronic properties of Na(5)Sn(13).
Main Methods:
- High-temperature synthesis in a tantalum container.
- X-ray diffraction for crystal structure determination.
- Zintl-Klemm electron-counting formalism for electronic structure analysis.
Main Results:
- Na(5)Sn(13) was formed in high yield.
- A complex three-dimensional structure with 29 independent atoms was determined (orthorhombic, Cmcm).
- The compound exhibits a closed-shell electronic configuration and is diamagnetic.
Conclusions:
- Na(5)Sn(13) represents a new Zintl phase in the sodium-tin system.
- The structural and electronic properties align with Zintl-Klemm predictions.
- This discovery contributes to the understanding of complex intermetallic compounds.
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