Results 41 to 50 of about 8,526 (198)
Surface astrochemistry: a computational chemistry perspective [PDF]
Astrochemistry VII -- Through the Cosmos from Galaxies to
Planets", proceedings of the IAU Symposium No. 332, 2017, Puerto Varas,
Chile; eds. M. Cunningham, T. Millar and Y. Aikawa,p 293 - 304, 2022 Molecules in space are synthesized via a large variety of gas-phase reactions, and reactions on dust-grain surfaces, where the surface acts as a catalyst. Especially, saturated, hydrogen-rich molecules are formed through surface chemistry. Astrochemical models have developed over the decades to understand the molecular processes in the interstellar ...
arxiv +1 more source
Astrochemistry: Synthesis and Modelling [PDF]
, 2012 We discuss models that astrochemists have developed to study the chemical composition of the interstellar medium. These models aim at computing the evolution of the chemical composition of a mixture of gas and dust under as- trophysical conditions. These conditions, as well as the geometry and the physical dynamics, have to be adapted to the objects ...
Wakelam, Valentine +2 more
openaire +4 more sources
Database of space life investigations and bioinformatics of microbiology in extreme environments
Frontiers in Microbiology, 2022 Biological experiments performed in space crafts like space stations, space shuttles, and recoverable satellites has enabled extensive spaceflight life investigations (SLIs).
Junyong Wang +11 more
doaj +1 more source
Molecules, 2023 Multicomponent reactions (MCRs) have undoubtedly emerged as the most indispensable tool for organic chemists worldwide, finding extensive utility in the synthesis of intricate natural products, heterocyclic molecules with significant bioactivity, and ...
Hua Zhao, Yufen Zhao
doaj +1 more source
Three-body aggregation of guest molecules as a key step in methane hydrate nucleation and growth
Communications Chemistry, 2022 Gas hydrates have an important role in environmental and astrochemistry, as well as energy materials, but the hydrate nucleation process is not fully understood.
Wenfeng Hu +9 more
doaj +1 more source
Recommended Thermal Rate Coefficients for the C + H$_3^+$ Reaction and Some Astrochemical Implications [PDF]
, 2016 We have incorporated our experimentally derived thermal rate coefficients for C + H$_3^+$ forming CH$^+$ and CH$_2^+$ into a commonly used astrochemical model.
Buzard, C. F. +6 more
core +3 more sources
Isolation and Structure Elucidation of the Heterocumulene Anions [NCC‐L]− (L=CO, CS, N2)
Angewandte Chemie, Volume 137, Issue 13, March 24, 2025.The cumulated 5‐atomic cyanodiazomethanide [NCCNN]− and thioketenyl anion [NCCCS]− were synthesized from the metalated ylide and ketenyl anion, respectively. Both anions exhibit unexpected stability, but with notable structural differences. While the cyanodiazomethanide features a distinctly bent geometry, the thioketenyl anion was found to be linear ...
Quentin Le Dé +6 more
wiley +2 more sources
Ionize Hard: Interstellar PO+ Detection
Frontiers in Astronomy and Space Sciences, 2022 We report the first detection of the phosphorus monoxide ion (PO+) in the interstellar medium. Our unbiased and very sensitive spectral survey toward the G+0.693–0.027 molecular cloud covers four different rotational transitions of this molecule, two of ...
Víctor M. Rivilla +17 more
doaj +1 more source
Dust Formation in Astrophysical Environments: The Importance of Kinetics
Frontiers in Astronomy and Space Sciences, 2022 Astronomical observations and analysis of stardust isolated from meteorites have revealed a highly diverse interstellar and circumstellar grain inventory, including a wide range of amorphous materials and crystalline compounds (silicates and carbon ...
A.G.G.M. Tielens, A.G.G.M. Tielens
doaj +1 more source
Constraining chemical networks inAstrochemistry [PDF]
, 2021 Databases of gas and surface chemical reactions are a key tool for scientists working in a wide range of physical sciences. In Astrochemistry, databases of chemical reactions are used as inputs to chemical models to determine the abundances of the interstellar medium.
arxiv +1 more source