association reaction between H3O+ and C2H2 is found to consist of a ca. 50 : 50 mixture of two isomeric ions. These two isomeric ions are identified in a selected ion flow tube, by their different proton transfer behaviour with the neutral reagents C2H5Br, 4-fluorotoluene, CH3OH and benzene, as protonated vinyl alcohol, CH2CHOH2+ and either protonated acetaldehyde, CH3CHOH+ or the electrostatic complex H3O+·
发现H 3 O +和C 2 H 2之间的离子-分子缔合反应的C 2 H 2 ·H 3 O +产物由大约1个碳原子组成。两个异构离子的50:50混合物。这两种同分异构离子在选定的离子流管中通过与中性试剂C 2 H 5 Br,4-
氟甲苯,CH 3 OH和苯的质子转移行为不同而被质子化的
乙烯醇,CH 2 CHOH 2 +和质子化
乙醛,CH 3 CHOH +或静电络合物H 3 O + ·C 2 H 2。这些结论得到基于从头算分子轨道理论的高斯G2能级计算的支持,该计算可用于计算CH 3 CHO,CH 2 CHOH,
环氧乙烷和无环CH 2 OCH 2的质子亲和力。还报告了特定C 2 H 5 O +异构体的反应的反应速率系数和产物比率,即:CH 3 CHOH +,CH 3 OCH 2 +图中,用CH 3 OH,4-
氟甲苯和C 6 H 6表示。简要讨论了当前结果对星际合成CH 3 CHO的影响。