Formation of acetamide in interstellar medium

Lois Foo, Attila Surányi, Andrea Guljas, Milán Szőri, John Justine Villar, B. Viskolcz, I. Csizmadia, Anita Rágyanszki, Béla Fiser

Research output: Contribution to journalArticle

Abstract

Acetamide (C2H5NO) is the largest molecule containing a peptide bond, which is an amine (-NH2) group bonded to a carbonyl (C = O) group, that has yet been detected in interstellar medium (ISM). It is also considered to be a precursor for amino acids (the building blocks of proteins). Formation of acetamide in ISM is believed to occur due based on evidence for the existence of the molecule itself and its component smaller species in ISM. A case study of acetamide is presented here, to introduce a new method to determine its possible formation reaction pathways in ISM based on the molecular formula of a species. All possible species with the same molecular formula as acetamide (C2H5NO) but with different connectivity, the so-called constitutional isomers of the molecule (198 structures, 91 unique species), were created and studied under the extreme conditions of dense molecular clouds. Acetamide was found to be the most stable of the C2H5NO isomer family. Based on the stability of the uni- and bimolecular species, eight reactions were proposed which could led to the formation of acetamide in ISM.

Original languageEnglish
Pages (from-to)1-5
Number of pages5
JournalMolecular Astrophysics
Volume13
DOIs
Publication statusPublished - Nov 1 2018

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Isomers
isomers
Molecules
molecules
molecular clouds
peptide
peptides
amino acids
connectivity
amines
amino acid
Amines
acetamide
proteins
protein
Amino Acids
Peptides
Proteins
isomer
amine

Keywords

  • CHNO
  • ISM
  • Molecular formula
  • Molecular process
  • Peptide bond

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Spectroscopy
  • Physical and Theoretical Chemistry
  • Space and Planetary Science

Cite this

Foo, L., Surányi, A., Guljas, A., Szőri, M., Villar, J. J., Viskolcz, B., ... Fiser, B. (2018). Formation of acetamide in interstellar medium. Molecular Astrophysics, 13, 1-5. https://doi.org/10.1016/j.molap.2018.06.002

Formation of acetamide in interstellar medium. / Foo, Lois; Surányi, Attila; Guljas, Andrea; Szőri, Milán; Villar, John Justine; Viskolcz, B.; Csizmadia, I.; Rágyanszki, Anita; Fiser, Béla.

In: Molecular Astrophysics, Vol. 13, 01.11.2018, p. 1-5.

Research output: Contribution to journalArticle

Foo, L, Surányi, A, Guljas, A, Szőri, M, Villar, JJ, Viskolcz, B, Csizmadia, I, Rágyanszki, A & Fiser, B 2018, 'Formation of acetamide in interstellar medium', Molecular Astrophysics, vol. 13, pp. 1-5. https://doi.org/10.1016/j.molap.2018.06.002
Foo, Lois ; Surányi, Attila ; Guljas, Andrea ; Szőri, Milán ; Villar, John Justine ; Viskolcz, B. ; Csizmadia, I. ; Rágyanszki, Anita ; Fiser, Béla. / Formation of acetamide in interstellar medium. In: Molecular Astrophysics. 2018 ; Vol. 13. pp. 1-5.
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