Hydrogen-Abstraction/Acetylene-Addition Exposed
- Univ. of Hawaii at Manoa, Honolulu, HI (United States). Dept. of Chemistry
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Chemical Sciences Division
- Florida Intl Univ., Miami, FL (United States). Dept. of Chemistry and Biochemistry
Polycyclic aromatic hydrocarbons (PAHs) are omnipresent in the interstellar medium (ISM) and also in carbonaceous meteorites (CM) such as Murchison. However, the basic reaction routes leading to the formation of even the simplest PAH—naphthalene (C10H8)—via the hydrogen-abstraction/acetylene-addition (HACA) mechanism still remain ambiguous. By revealing the uncharted fundamental chemistry of the styrenyl (C8H7) and the ortho-vinylphenyl radicals (C8H7)—key transient species of the HACA mechanism—with acetylene (C2H2), we provide the first solid experimental evidence on the facile formation of naphthalene in a simulated combustion environment validating the previously postulated HACA mechanism for these two radicals. This study highlights, at the molecular level spanning combustion and astrochemistry, the importance of the HACA mechanism to the formation of the prototype PAH naphthalene.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Univ. of Hawaii at Manoa, Honolulu, HI (United States); Florida International Univ. (FIU), Miami, FL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences, and Biosciences Division
- Grant/Contract Number:
- AC02-05CH11231; FG02‐03ER15411; FG02‐04ER15570; FG02-03ER15411; FG02-04ER15570
- OSTI ID:
- 1464134
- Alternate ID(s):
- OSTI ID: 1602921
- Journal Information:
- Angewandte Chemie (International Edition), Vol. 55, Issue 48; Related Information: © 2016 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim; ISSN 1433-7851
- Publisher:
- WileyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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