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The synthesis of ternary acetylides Li2TeC2 and Na2TeC2 is presented as thefirst example of ternary acetylides with metalloid elements instead oftransition metals. The synthesis was carried out by the direct reaction of thecorresponding bialkali acetylides with tellurium powder in liquid ammonia.Alternatively, the synthesis of Na2TeC2 was also carried out by the directreaction of tellurium powder and two equivalents of NaC2H in liquid ammonialeading to Na2TeC2 and acetylene gas through an equilibrium containing theassumed NaTeC2H molecules besides the reactants and the products. The resultingcrystalline materials were characterized by x-ray diffraction. Implications ofthese new syntheses on the synthesis of other ternary acetylides with metalloidelements and transition metals are also discussed.

The Synthesis of Ternary Acetylides with Tellurium: Li2TeC2 and Na2TeC2