The Photochemical and Thermal Decomposition of Azidoacetylene in the Gas Phase, Solid Matrix, and Solutions
作者:Xiaoqing Zeng、Helmut Beckers、Jennifer Seifert、Klaus Banert
DOI:10.1002/ejoc.201402153
日期:2014.7
Decomposition of the extremely explosive and unstable parent compound of 1-azidoalkynes, HCCN3 (azidoacetylene), was studied in the gas phase, solid argon matrix, and solutions. In the gas phase, this azide decomposes quickly at room temperature with a half-life time (t1/2) of 20 min at an initial pressure (p0) of 0.8 mbar. The decay (p0 = 1.0 mbar) is significantly increased in an atmosphere of O2
在气相、固体氩基质和溶液中研究了极易爆炸且不稳定的 1-叠氮炔母体化合物 HCCN3(叠氮乙炔)的分解。在气相中,这种叠氮化物在室温下快速分解,在 0.8 毫巴的初始压力 (p0) 下,半衰期 (t1/2) 为 20 分钟。衰变 (p0 = 1.0 mbar) 在 O2 气氛中显着增加,t1/2 为 3 分钟,其中 HC(O)CN 被确定为氰卡宾中间体 HCCN 的捕集产物。在溶液中的叠氮化物分解过程中也发现了这种卡宾被溶剂分子(CH2Cl2 和 CHCl3)捕获的产物,而与溴溶液形成二溴乙腈的反应被解释为是通过炔烃本身的亲核攻击发生的。