Solubility and Reactions of Alkali Metal Acetylides in Liquid Ammonia

乙炔类化合物含有一个由两个碳原子((C2)2-)组成的阴离子构件，其质子化反应生成气态碳氢乙炔(C2H2)。在矿物油工业化利用之前，由煤合成的乙炔钙一直是碳氢化合物有机化学的主要途径；随着石油时代的结束，乙炔化学将重新引起人们的关注。该提案的作者可以在初步研究中证明，碱金属乙炔在液氨中有很小程度的溶解。以前，(C2)2-阴离子只能在固体状态下进行研究。在拟议的项目中，计划调查这种溶解度的确切条件以及与不同反应物的反应。在这个过程中，一个决定性的问题是液氨中的质子化平衡，它导致溶解的乙炔的存在。到目前为止进行的实验表明，拟议的项目可能首次打开以溶液为基础的乙炔化学的大门。

Acetylides contain an anionic building block which is comprised of two carbon atoms ((C2)2-), the protonation of which generates the gaseous hydrocarbon acetylene (C2H2). Prior to the industrial utilization of mineral oil, calcium acetylide synthesized from coal had been the main access to the organic chemistry of hydrocarbons; with the end of the petroleum age the chemistry of acetylides will regain a high profile. The authors of the proposal could demonstrate in preliminary studies that alkali metal acetylides dissolve in liquid ammonia to a small extent. Previously, (C2)2- anions could only be studied in the solid state. In the proposed project it is planned to investigate the exact conditions of this solubility as well as reactions with different reactants. In the course of this, a decisive issue is the protonation equilibrium in liquid ammonia, which leads to the presence of dissolved acetylene. The experiments conducted up to now indicate that the proposed project may open a door to a solution-based acetylide chemistry for the first time.