The synthesis of ternary acetylides with tellurium: Li sub(2)TeC sub(2) and Na sub(2)TeC sub(2)

The synthesis of ternary acetylides Li sub(2)TeC sub(2) and Na sub(2)TeC sub(2) is presented as the first example of ternary acetylides with metalloid elements instead of transition metals. The synthesis was carried out by the direct reaction of the corresponding bialkali acetylides with tellurium p...

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Bibliographic Details
Published in:RSC advances 2015-06, Vol.5 (69), p.55986-55993
Main Authors: Nemeth, Karoly, Unni, Aditya K, Kalnmals, Christopher, Segre, Carlo U, Kaduk, James, Bloom, Ira D, Maroni, Victor A
Format: Article
Language:English
Subjects:
Diffraction
Equivalence
Liquid ammonia
Metalloids
Synthesis
Synthesis (chemistry)
Tellurium
Transition metals
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Summary:The synthesis of ternary acetylides Li sub(2)TeC sub(2) and Na sub(2)TeC sub(2) is presented as the first example of ternary acetylides with metalloid elements instead of transition metals. The synthesis was carried out by the direct reaction of the corresponding bialkali acetylides with tellurium powder in liquid ammonia. Alternatively, the synthesis of Na sub(2)TeC sub(2) was also carried out by the direct reaction of tellurium powder and two equivalents of NaC sub(2)H in liquid ammonia leading to Na sub(2)TeC sub(2) and acetylene gas through an equilibrium containing the assumed NaTeC sub(2)H molecules besides the reactants and the products. The resulting disordered crystalline materials were characterized by X-ray diffraction and Raman spectroscopy. Implications of these new syntheses on the synthesis of other ternary acetylides with metalloid elements and transition metals are also discussed.
ISSN:2046-2069
DOI:10.1039/c5ra08983b