Results 31 to 40 of about 2,302 (180)
Cationic Noble-Gas Hydrides: From Ion Sources to Outer Space
Frontiers in Chemistry, 2020 Cationic species with noble gas (Ng)-hydrogen bonds play a major role in the gas-phase ion chemistry of the group 18 elements. These species first emerged more than 90 years ago, when the simplest HeH+ and HeH2+ were detected from ionized He/H2 mixtures.
Felice Grandinetti, Felice Grandinetti
doaj +1 more source
Open questions on carbon-based molecules in space
Communications Chemistry, 2022 It has been a great joint achievement of astronomy, laboratory spectroscopy and quantum chemistry to identify interstellar molecules in various astronomical environments and piece together their origins story from the fragmented evidence.
Christopher S. Hansen +3 more
doaj +1 more source
Proton and Electron Irradiations of CH4:H2O Mixed Ices
Atoms, 2023 The organic chemistry occurring in interstellar environments may lead to the production of complex molecules that are relevant to the emergence of life. Therefore, in order to understand the origins of life itself, it is necessary to probe the chemistry ...
Duncan V. Mifsud +9 more
doaj +1 more source
The first steps of interstellar phosphorus chemistry [PDF]
Astronomy & Astrophysics, 2020 Context. Phosphorus-bearing species are essential to the formation of life on Earth, however they have barely been detected in the interstellar medium. In particular, towards star-forming regions only PN and PO have been identified so far. Since only a small number of detections of P-bearing molecules are available, their chemical formation pathways ...
J. Chantzos +6 more
openaire +6 more sources
Interstellar Sulfur Chemistry [PDF]
Symposium - International Astronomical Union, 1980 This paper summarizes results of a chemical model of SO, CS, and OCS chemistry in dense clouds.
Sheo S. Prasad, Wesley T. Huntress
openaire +1 more source
Nature Communications, 2018 Interstellar silicates play a key role in star formation, however their synthetic routes are not fully understood. Here, the authors provide evidence for the formation of SiO2 along with SiO via low-temperature gas phase chemistry.
Tao Yang +5 more
doaj +1 more source
Sustained oscillations in interstellar chemistry models [PDF]
Astronomy & Astrophysics, 2020 Context. Nonlinear behavior in interstellar chemical models has been recognized for 25 years now. Different mechanisms account for the possibility of multiple fixed-points at steady-state, characterized by the ionization degree of the gas. Aims. Chemical oscillations are also a natural behavior of nonlinear chemical models.
Evelyne Roueff, Jacques Le Bourlot
openaire +3 more sources
Chemistry – A European Journal, EarlyView.First controlled formation of cyanohexatriyne (HC7N) is achieved using a cobalt–alkyne masking strategy that overcomes the intrinsic instability of nitrile‐substituted polyynes. The approach enables spectroscopic validation of HC7N and reveals its pronounced electrophilicity through a selective conjugate addition with diethylamine.
Léa Lefrançois +4 more
wiley +1 more source
Angewandte Chemie, Volume 138, Issue 32, 3 August 2026.Cyclopentadienes (CpHs) are fundamental building blocks with widespread applications in chemistry. However, their inherent acidity and isomeric instability have long limited access to chiral variants in an asymmetric fashion. Here, we introduce a CuH‐catalyzed asymmetric transformation that provides an unprecedented entry into a new class of ...
Piero Soppelsa +4 more
wiley +2 more sources
Slow-electron-triggered chemistry in interstellar methanol-water ices
Astronomy & AstrophysicsWater and, to a lesser extent, methanol are widespread in interstellar space as ices, where sustained exposure to ionizing radiation promotes the formation of complex compounds such as prebiotic molecules via multi-step reactions.
Abdoul-Carime H., Kopyra J.
doaj +1 more source