Results 41 to 50 of about 3,228 (211)

Valence Threshold Photoionization Spectra of C5$_5$H and C5$_5$H2$_2$ Isomers

ChemPhysChem, Volume 27, Issue 8, 28 April 2026.
Mass‐selected threshold photoelectron spectra (TPES) of l‐C5H, HC5H, and c–C3H‐CCH were recorded using double‐imaging photoelectron‐photoion coincidence spectroscopy. These transient species were generated in situ by hydrogen abstraction from cyclopropylacetylene and 1,3‐pentadiyne.
Ugo Jacovella, Myriam Drissi, Bérenger Gans, Corentin Rossi, Gustavo A. Garcia, Hai Linh Le, Mengxu Jiang, Jean‐Claude Guillemin, Séverine Boyé‐Péronne, Jean‐Christophe Loison   +9 more
wiley   +1 more source

ASTROCHEMISTRY OF STAR FORMATION

Odessa Astronomical Publications, 2013
Star formation is one of the key pro­cesses governing the evolution of the Universe. It is ac­companied by significant transformations in the chem­ical composition and the physical state of the inter­stellar medium. Combining observations in infrared and
D. S. Wiebe, O. V. Kochina
doaj   +1 more source

On the Formation of Vinylamine (C2H3NH2) in Interstellar Ice Analogs

The Astrophysical Journal, 2023
Amines—organic molecules carrying the –NH _2 moiety—have been recognized as a vital intermediate in the formation of prebiotic molecules such as amino acids and nucleobases.
Chaojiang Zhang, Jia Wang, Andrew M. Turner, Joshua H. Marks, Sankhabrata Chandra, Ryan C. Fortenberry, Ralf I. Kaiser   +6 more
doaj   +1 more source

Ion–Molecule Reaction Products as Probes and Precursors for Preparative Mass Spectrometry

Chemistry – A European Journal, Volume 32, Issue 14, 15 April 2026.
Ion–molecule reactions in the gas phase of mass spectrometers are important for preparative mass spectrometry because they (1) provide knowledge about the intrinsic reactivity of ions, helping to predict and control their reactivity at interfaces, and (2) generate new complex ions that can be mass selected and deposited on surfaces.
Markus Rohdenburg, Sebastian Kawa, Kay‐Antonio Behrend, Harald Knorke, Jonas Warneke   +4 more
wiley   +1 more source

Grain Surface Models and Data for Astrochemistry [PDF]

, 2017
The cross-disciplinary field of astrochemistry exists to understand the formation, destruction, and survival of molecules in astrophysical environments. Molecules in space are synthesized via a large variety of gas-phase reactions, and reactions on dust ...
R. T. Garrod, Cuppen, H.M., Garrod, R., H. M. Cuppen, Ioppolo, S., Cuppen, H. M., Walsh, C, Cuppen, HM, Lamberts, T, H. M. Cuppen, Garrod, R.T., Walsh, C., Ioppolo, S, Penteado, E. M., Garrod, RT, Penteado, E.M., E. M. Penteado, Garrod, R. T., C. Walsh, Semenov, D, Penteado, EM, T. Lamberts, Semenov, D., Lamberts, T., D. Semenov, S. Ioppolo, Lamberts, A.L.M., Monfardini Penteado, E.   +27 more
core   +1 more source

Confined Chemistry in Space: Zeolite‐Supported Fe13 Nanoclusters Modulate CS Reactivity

Small Structures, Volume 7, Issue 3, March 2026.
The study explores how an Fe13 cluster confined in chabazite reshapes the reaction of CS and H2 under astrochemical conditions. Confinement promotes C–S bond cleavage over hydrogenation, directing chemistry toward CH4 and H2S formation. Additional CS enables CS2 and C2 species. Microkinetic analysis identifies protoplanetary environments where zeolites
Gerard Pareras, Albert Rimola
wiley   +1 more source

Virtual Issue on Astrochemistry: From the Chemical Laboratory to the Stars

, 2019
Virtual Issue on Astrochemistry: From the Chemical Laboratory to the ...
Susanna L. Widicus Weaver (7903547), Eric Herbst (1903963)   +1 more
core   +2 more sources

Quantum chemical calculations of lupeol (C30H50O) isolated from the ethyl acetate leaf extracts of Justicia Secunda

Journal of Nigerian Society of Physical Sciences
The discovery of lupeol, a triterpenoid compound (C30H50O), in the ethyl acetate leaf extract of Justicia secunda (Blood root), has opened doors to extensive research and development opportunities in natural product-based pharmaceuticals.
B. Bako, E. E. Etim, J. P. Shinggu, S. S. Humphrey, L. J. Moses, M. E. Khan   +5 more
doaj   +1 more source

Ice Ic without stacking disorder by evacuating hydrogen from hydrogen hydrate

Nature Communications, 2020
Metastable cubic ice has been identified in several conditions relevant to geo and astrochemistry, but was always characterized by stacking disorder. Here the authors synthesize a hydrogen hydrate and degas hydrogen, obtaining pure non-defected cubic ice,
Kazuki Komatsu, Shinichi Machida, Fumiya Noritake, Takanori Hattori, Asami Sano-Furukawa, Ryo Yamane, Keishiro Yamashita, Hiroyuki Kagi   +7 more
doaj   +1 more source

Constraining Chemical Networks in Astrochemistry [PDF]

, 2020
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 ...
Viti, S, Holdship, J
core