Metastable insertion reactions on interstellar ices
Metastable insertion reactions on interstellar ices
复制标题
星际冰上的亚稳态插入反应
DOI：
10.1093/mnras/stac3646
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发表时间：
2022
影响因子：
4.8
通讯作者：
Herbst, Eric
中科院分区：
文献类型：
--
作者：
Carder, Joshua T.;Paulive, Alec;Herbst, Eric
星际条件下复杂有机分子（COMs）的形成受到气相和固相中发生的几种不同过程的影响。在这里，我们进行了以前的工作的延伸，以了解电子激发的亚稳物种的影响，通过插入型反应凝聚相COM形成。这些反应涉及在先前存在的化学键上插入化学实体。这样的插入过程涉及亚稳态物种允许快速反应与周围的颗粒冰的激活能或扩散障碍的情况下，即使在寒冷，黑暗的云条件。在本文中，生产的一些星际物种，包括COM冷暗云处理通过亚稳态过程以及现有的建议的途径，如自由基重组和氢化的不饱和物种，以获得洞察力的相对重要性的新增加的过程。
The formation of complex organic molecules (COMs) in interstellar conditions is influenced by several different processes occurring both in the gas and solid phases. Here we perform an extension of previous work to understand the influence of electronically excited metastable species on condensed phase COM formation via insertion-type reactions. These reactions involve the insertion of a chemical entity on a previously existing chemical bond. Such insertion processes involving a metastable species allow for rapid reactions with the surrounding grain ice in the absence of activation energy or diffusion barriers even under cold, dark cloud conditions. In this paper, the production of a number of interstellar species including COMs in cold dark clouds is treated both via the metastable process as well as existing suggested pathways such as radical recombination and hydrogenation of unsaturated species in order to gain insight about the relative importance of the newly added process.