含碲三元炔化物Li2TeC2和Na2TeC2的合成
The Synthesis of Ternary Acetylides with Tellurium: Li2TeC2 and Na2TeC2
摘要：
本文首次报道了用类金属取代过渡金属的三元乙炔化合物Li_2TeC_2和Na_2TeC_2的合成。在液氨中，碲粉与相应的双碱金属炔化物直接反应合成了碲化钾。或者，Na2TeC2的合成也通过碲粉末和两当量的NaC2H在液氨中的直接反应进行，通过除了反应物和产物之外还含有假定的NaTeC2H分子的平衡产生Na2TeC2和乙炔气体。所得结晶材料通过X射线衍射表征。本文还讨论了这些新的合成方法对其它含类金属元素和过渡金属的三元炔化物合成的启示。
英文摘要：
The synthesis of ternary acetylides Li2TeC2 and Na2TeC2 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 Na2TeC2 was also carried out by the direct reaction of tellurium powder and two equivalents of NaC2H in liquid ammonia leading to Na2TeC2 and acetylene gas through an equilibrium containing the assumed NaTeC2H molecules besides the reactants and the products. The resulting crystalline materials were characterized by x-ray diffraction. Implications of these new syntheses on the synthesis of other ternary acetylides with metalloid elements and transition metals are also discussed.
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