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[TeSe3]2- and [TeSe2]2- as synthons.
Sergey M Dibrov1, James A Ibers
1Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, USA.
Chemical Communications (Cambridge, England)
|September 19, 2003
Summary
Researchers synthesized the novel [Au2(TeSe2)2]2- anion using gold cyanide and telluride-selenide precursors. Further reactions yielded the related [Au2(Te2)2]2- anion, expanding knowledge of gold-chalcogenide chemistry.
Area of Science:
- Inorganic Chemistry
- Materials Science
- Solid-State Chemistry
Background:
- Gold-chalcogenide chemistry is an emerging field with potential applications in catalysis and electronics.
- The synthesis and characterization of novel polynuclear gold anions are crucial for understanding their unique electronic and structural properties.
Purpose of the Study:
- To synthesize and characterize the novel [Au2(TeSe2)2]2- anion.
- To investigate the reactivity of [Au2(TeSe2)2]2- and related species under different reaction conditions.
- To explore the formation of gold-telluride anions.
Main Methods:
- Reaction of [TeSe3]2- with gold cyanide (AuCN) in N,N-dimethylformamide (DMF) with triethylphosphine (PEt3).
- Reaction of [TeSe2]2- with AuCN in DMF.
- Reaction of [TeSe2]2- with AuCN in DMF in the presence of PEt3.
Main Results:
- Successful synthesis of the [Au2(TeSe2)2]2- anion from [TeSe3]2- and AuCN with PEt3.
- Alternative synthesis of [Au2(TeSe2)2]2- from [TeSe2]2- and AuCN in DMF.
- Formation of the [Au2(Te2)2]2- anion from [TeSe2]2- and AuCN in DMF with PEt3.
Conclusions:
- The [Au2(TeSe2)2]2- anion can be synthesized through different routes involving gold cyanide and mixed chalcogenide precursors.
- The reaction conditions, including the presence of PEt3, influence the final product, leading to the formation of telluride-only anions like [Au2(Te2)2]2-.
- This work contributes to the growing library of polynuclear gold anions and their synthetic methodologies.