关于叠氮化甲酯（CH3N3）冰与电离辐射的相互作用：甲亚胺（CH2NH）、氰化氢（HCN）和异氰化氢（HNC）的形成。

On the interaction of methyl azide (CH3N3) ices with ionizing radiation: formation of methanimine (CH2NH), hydrogen cyanide (HCN), and hydrogen isocyanide (HNC).

机构信息

Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106, United States.

出版信息

J Phys Chem A. 2011 Jan 27;115(3):250-64. doi: 10.1021/jp103028v. Epub 2010 Dec 17.

DOI:10.1021/jp103028v

PMID:21162584

Abstract

Methyl azide (CH(3)N(3)) might be a potential precursor in the synthesis of prebiotic molecules via nonequilibrium reactions on interstellar ices initiated by energetic galactic cosmic rays (GCR) and photons. Here, we investigate the effects of energetic electrons as formed in the track of cosmic ray particles and 193 nm photons with solid methyl azide at 10 K and the inherent formation of methanimine (CH(2)NH), hydrogen cyanide (HCN), and hydrogen isocyanide (HNC). We present a systematic kinetic study and outline feasible reaction pathways to these molecules. These processes might be also important in solar system analogue ices.

摘要

甲基叠氮化物（CH(3)N(3)）可能是通过星际冰上的非平衡反应，由高能银河宇宙射线（GCR）和光子引发的前生物分子合成的潜在前体。在这里，我们研究了在 10 K 下高能电子在宇宙射线粒子和 193nm 光子的轨迹中形成，并在固态甲基叠氮化物中形成甲亚胺（CH(2)NH）、氰化氢（HCN）和异氰化氢（HNC）的影响。我们提出了一种系统的动力学研究，并概述了这些分子的可行反应途径。这些过程在太阳系类似冰中也可能很重要。