Formation of benzene and naphthalene through cyclopentadienyl-mediated radical–radical reactions

RI Kaiser, L Zhao, W Lu, M Ahmed… - The Journal of …, 2021 - ACS Publications
Resonantly stabilized free radicals (RSFRs) have been contemplated as fundamental
molecular building blocks and reactive intermediates in molecular mass growth processes …

Photostability of gas-and solid-phase biomolecules within dense molecular clouds due to soft X-rays

S Pilling, DPP Andrade… - Monthly Notices of …, 2011 - academic.oup.com
An experimental photochemistry study involving gas-and solid-phase amino acids (glycine,
DL-valine, DL-proline) and nucleobases (adenine and uracil) under soft X-rays was …

An experimental and theoretical study on the ionization energies of polyynes (H–(C≡ C) n–H; n= 1–9)

RI Kaiser, BJ Sun, HM Lin, AHH Chang… - The Astrophysical …, 2010 - iopscience.iop.org
We present a combined experimental and theoretical work on the ionization energies of
polyacetylene–organic molecules considered as important building blocks to form polycyclic …

The effect of broadband soft X-rays in SO2-containing ices: implications on the photochemistry of ices toward young stellar objects

S Pilling, A Bergantini - The Astrophysical Journal, 2015 - iopscience.iop.org
We investigate the effects produced mainly by broadband soft X-rays up to 2 keV (plus fast
(∼ keV) photoelectrons and low-energy (∼ eV) induced secondary electrons) in the ice …

Destruction and multiple ionization of PAHs by X-rays in circumnuclear regions of AGNs

T Monfredini, HM Quitián-Lara… - Monthly Notices of …, 2019 - academic.oup.com
The infrared signatures of polycyclic aromatic hydrocarbons (PAHs) are observed in a
variety of astrophysical objects, including the circumnuclear medium of active galactic nuclei …

More π, please: What drives the formation of unsaturated molecules in the interstellar medium?

J Londoño-Restrepo, S Gómez, HM Quitián-Lara… - Chemical …, 2025 - pubs.rsc.org
We present a computational investigation into the fragmentation pathways of ethanolamine
(C2H7NO, EtA), propanol (C3H8O, PrO), butanenitrile (C4H7N, BuN), and glycolamide …

Photolysis of CH3CN Ices by Soft X-rays: Implications for the Chemistry of Astrophysical Ices at the Surroundings of X-ray Sources

GA Carvalho, S Pilling - The Journal of Physical Chemistry A, 2020 - ACS Publications
In this work, broad-band soft X-ray (6–2000 eV) was employed to irradiate frozen acetonitrile
CH3CN, at the temperature 13 K, with different photon fluences up to 1.5× 1018 photons cm …

Hydrogenated benzene in circumstellar environments: insights into the photostability of super-hydrogenated PAHs

HM Quitián-Lara, F Fantuzzi… - The Astrophysical …, 2018 - iopscience.iop.org
Polycyclic aromatic hydrocarbons (PAHs), comprised of fused benzene (C 6 H 6) rings, emit
infrared radiation (3–12 μm) due to the vibrational transitions of the C–H bonds of the …

X-ray photodesorption from methanol ice

DPP Andrade, MLM Rocco… - Monthly Notices of the …, 2010 - academic.oup.com
The abundances of molecules and ions depend on the mechanisms of their formation and
destruction that can occur both in the gas phase and in the condensed phase on grain …

Photodissociation of methyl formate in circumstellar environment: stability under soft X-rays

F Fantuzzi, S Pilling, ACF Santos… - Monthly Notices of …, 2011 - academic.oup.com
The methyl formate molecule (HCOOCH3) is one of the most abundant molecules observed
in hot molecular cores. Together with acetic acid and the sugar glycolaldehyde, these …