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Cover Feature: Energetics of Formation of Cyclacenes from 2,3‐Didehydroacenes and Implications for Astrochemistry (Chem. Eur. J. 14/2021)
Author(s) -
Gupta Divanshu,
Omont Alain,
Bettinger Holger F.
Publication year - 2021
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.202004182
Subject(s) - astrochemistry , intramolecular force , chemistry , interstellar medium , energetics , acetylene , absorption (acoustics) , astrobiology , photochemistry , cover (algebra) , molecule , dehydrogenation , physics , chemical physics , astrophysics , stereochemistry , organic chemistry , galaxy , acoustics , catalysis , mechanical engineering , engineering , thermodynamics
Rolling up : Larger acenes are potential carriers of diffuse interstellar bands, and should undergo dehydrogenation reactions upon absorption of interstellar UV photons. This could result in 2,3‐didehydroacenes that have a reactive aryne functionality at one of the short ends of the long molecule. The intramolecular Diels‐Alder reaction to dihydroethenocyclacenes with the other end of the acene and the subsequent cycloreversion of acetylene were studied computationally and were shown to have energy requirements that are compatible with cyclacene formation under the extreme conditions of interstellar space. More information can be found in the Full Paper by H. F. Bettinger et al. on page 4605.