In the past half century, radioastronomy has changed our perception and understanding of the universe. In this issue of PNAS, the molecular chemistry directly observed within the galaxy is discussed. For the most part, the description of the molecular transformations requires specific kinetic schemes rather than chemical thermodynamics.
Klemperer W.
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Methanetetrol and the final frontier in ortho acids [PDF]
The rapid dissociation of methanetetrol (C(OH)4) has been suggested as an impediment to its observation, despite the stability of its substituted derivative orthocarbonates (C(OR)4).
Joshua H. Marks +10 more
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The interstellar chemistry of C<sub>3</sub>H and C<sub>3</sub>H<sub>2</sub> isomers. [PDF]
We report the detection of linear and cyclic isomers of C3H and C3H2 towards various starless cores and review the corresponding chemical pathways involving neutral (C3Hx with x=1,2) and ionic (C3Hx+ with x = 1,2,3) isomers. We highlight the role of the branching ratio of electronic Dissociative Recombination (DR) reactions of C3H2+ and C3H3+ isomers ...
Loison JC +8 more
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Computational investigation of spin-resolved energy landscapes of FeC4H2+ and their astrochemical implications [PDF]
The enduring enigma of iron depletion in the interstellar medium serves as a compelling impetus for an in-depth exploration of iron-bearing molecular species.
Shilpa Shajan +2 more
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The simplest iminophosphane HPNH and its photoisomerization to aminophosphinidene H2NP [PDF]
As a heavy analogue of dinitrogen, the diatomic phosphorus mononitride (PN) was the first detected phosphorus-containing compound in the interstellar medium.
Junjie Jiang +5 more
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Interstellar Chemistry in a Glovebox: Elusive Diatomic PN, Exposed [PDF]
Daniel Tofan, Alexandra Velian
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Hydrogen ejection from hydrocarbons: Characterization and relevance in soot formation and interstellar chemistry [PDF]
Hope Michelsen +2 more
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Gas-phase Chemistry in the Interstellar Medium: The Role of Laboratory Astrochemistry
“Who” and how? In this simple question the complexity of the interstellar chemistry is encapsulated. “Who” refers to what molecules are present in the interstellar medium (ISM) and “how” to the mechanisms that led to their formation.
Cristina Puzzarini
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Molecular Precursors of the RNA-World in Space: New Nitriles in the G+0.693−0.027 Molecular Cloud
Nitriles play a key role as molecular precursors in prebiotic experiments based on the RNA-world scenario for the origin of life. These chemical compounds could have been partially delivered to the young Earth from extraterrestrial objects, stressing the
Víctor M. Rivilla +15 more
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Dust evolution, a global view I. Nanoparticles, nascence, nitrogen and natural selection … joining the dots [PDF]
The role and importance of nanoparticles for interstellar chemistry and beyond is explored within the framework of The Heterogeneous dust Evolution Model for Interstellar Solids (THEMIS), focusing on their active surface chemistry, the effects of ...
A. P. Jones
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