Gas-phase molecular formation mechanisms of cyanamide (NH2CN) and its tautomer carbodiimide (HNCNH) under Sgr B2(N) astrophysical conditions

• Published in: Astronomy & Astrophysics Vol. 672; p. A49
• Main Authors: Juan C. Ramal-Olmedo, César A. Menor-Salván, Akira Miyoshi, Ryan C. Fortenberry
• Format: Journal Article
• Language: English; Japanese
• Published: Heidelberg EDP Sciences 01.04.2023
• Subjects: Abiogenesis; Abundance; Astrochemistry; Celestial bodies; Chemical synthesis; Comets; Cyanamides; Literature reviews; Low temperature; Mathematical analysis; Molecular clouds; Precursors; Purines; Pyrimidines; Quantum theory; Reaction mechanisms; Reagents; Tautomers; Vapor phases

Context. Cyanamide (NH 2 CN) and its tautomer carbodiimide (NHCHN) are believed to have been key precursors of purines and pyrimidines during abiogenesis on primitive Earth. The detection of guanine and cytosine in meteorites and comets provides evidence of their nonterrestrial formation. Although N...