Saved in:
| Main Authors: | , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2406.16945 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866909230532919296 |
|---|---|
| author | Yang, Zhenghai He, Chao Goettl, Shane J. Mebel, Alexander M. Velloso, Paulo F. G. Alves, Márcio O. Galvão, Breno R. L. Loison, Jean-Christophe Hickson, Kevin M. Dobrijevic, Michel Li, Xiaohu Kaiser, Ralf I. |
| author_facet | Yang, Zhenghai He, Chao Goettl, Shane J. Mebel, Alexander M. Velloso, Paulo F. G. Alves, Márcio O. Galvão, Breno R. L. Loison, Jean-Christophe Hickson, Kevin M. Dobrijevic, Michel Li, Xiaohu Kaiser, Ralf I. |
| contents | Aromatic molecules represent fundamental building blocks in prebiotic chemistry and are contemplated as vital precursors to DNA and RNA nitrogen bases. However, despite the identification of some 300 molecules in extraterrestrial environments, the pathways to pyridine (C5H5N), pyridinyl (C5H4N), and (iso)quinoline (C9H7N) the simplest representative of mono and bicyclic aromatic molecule carrying nitrogen are elusive. Here, we afford compelling evidence on the gas phase formation of methylene amidogen (H2CN) and cyanomethyl (H2CCN) radicals via molecular beam studies and electronic structure calculations. The modeling of the chemistries of Taurus Molecular Cloud (TMC 1) and Titans atmosphere contemplates a complex chain of reactions synthesizing pyridine, pyridinyl, and (iso)quinoline from H2CN and H2CCN at levels of up to 75%. This study affords unique entry points to precursors of DNA and RNA nitrogen bases in hydrocarbon rich extraterrestrial environments thus changing the way we think about the origin of prebiotic molecules in our Galaxy. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_16945 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Low temperature formation of pyridine and (iso)quinoline via neutral neutral reactions Yang, Zhenghai He, Chao Goettl, Shane J. Mebel, Alexander M. Velloso, Paulo F. G. Alves, Márcio O. Galvão, Breno R. L. Loison, Jean-Christophe Hickson, Kevin M. Dobrijevic, Michel Li, Xiaohu Kaiser, Ralf I. Chemical Physics Astrophysics of Galaxies Aromatic molecules represent fundamental building blocks in prebiotic chemistry and are contemplated as vital precursors to DNA and RNA nitrogen bases. However, despite the identification of some 300 molecules in extraterrestrial environments, the pathways to pyridine (C5H5N), pyridinyl (C5H4N), and (iso)quinoline (C9H7N) the simplest representative of mono and bicyclic aromatic molecule carrying nitrogen are elusive. Here, we afford compelling evidence on the gas phase formation of methylene amidogen (H2CN) and cyanomethyl (H2CCN) radicals via molecular beam studies and electronic structure calculations. The modeling of the chemistries of Taurus Molecular Cloud (TMC 1) and Titans atmosphere contemplates a complex chain of reactions synthesizing pyridine, pyridinyl, and (iso)quinoline from H2CN and H2CCN at levels of up to 75%. This study affords unique entry points to precursors of DNA and RNA nitrogen bases in hydrocarbon rich extraterrestrial environments thus changing the way we think about the origin of prebiotic molecules in our Galaxy. |
| title | Low temperature formation of pyridine and (iso)quinoline via neutral neutral reactions |
| topic | Chemical Physics Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2406.16945 |