Results 31 to 40 of about 3,228 (211)

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, Cong Chen, Jingyue Sun, Ning Zhang, Jiafei Zhao, Yu Liu, Zheng Ling, Weizhong Li, Weiguo Liu, Yongchen Song   +9 more
doaj   +1 more source

Astrochemistry and Astrobiology: Materials Sciencein Wonderland? [PDF]

, 2019
Astrochemistry and astrobiology, the fascinating disciplines that strive to unravel the origin of life, have opened unprecedented and unpredicted vistas into exotic compounds as well as extreme or complex reaction conditions of potential relevance for a ...
d'Ischia, Marco, Evans, Richard A., Ball, Vincent, d'Ischia, M. (Marco), Richard A. Evans, Marco d’Ischia, Cristina Puzzarini, Saladino, Raffaele, Thissen, Helmut, Barone, Vincenzo, Thissen, H. (Helmut), Raffaele Saladino, Paola Manini, Puzzarini, Cristina, Moracci, Marco, Marco Moracci, Vincenzo Barone, Manini, P. (Paola), Vincent Ball, Helmut Thissen, Barone, V. (Vincenzo), Richard A Evans, Marco d'Ischia, Moracci, M. (Marco), Puzzarini, C. (Cristina), Saladino, R. (Raffaele), Manini, Paola, Ball, V. (Vincent)   +27 more
core   +3 more sources

Infrared spectra of methane-containing ice mixtures for JWST data analyses

Astronomy & Astrophysics
Context. Solid methane (CH4) is an important molecule in interstellar and planetary environments, serving as a precursor to complex organic compounds, and it is a potential biosignature in exoplanetary studies.
Karteyeva V., Nakibov R., Petrashkevich I., Medvedev M., Vasyunin A.   +4 more
doaj   +1 more source

Computational Astrochemistry and Molecular Astrophysics

, 2014
Astrochemistry and molecular astrophysics are interdisciplinary fields involving chemistry, physics, and astronomy and aiming at the understanding of the chemical evolution of the universe.
PUZZARINI, CRISTINA, C. Puzzarini
core   +1 more source

JWST OPENS A NEW ERA IN ASTROCHEMISTRY [PDF]

, 2023
Historical sketch: Charlie Townes and I are the only two astronomical spectroscopists who switched to infrared after a few years of radio astronomy. Townes did atomic spectroscopy and discovered the black hole at the center of the Galaxy.ᵃ I switched ...
Oka, Takeshi
core   +1 more source

Thermal desorption of water ice in the interstellar medium

, 2001
Water (H2O) ice is an important solid constituent of many astrophysical environments. To comprehend the role of such ices in the chemistry and evolution of dense molecular clouds and comets, it is necessary to understand the freeze-out, potential surface
Collings, Mark P., Williams, David A, Fraser, Helen J., McCoustra, M R S ; id_orcid, McCoustra, Martin R.S., McCoustra, Martin R. S., Fraser, Helen J, Collings, Mark, Collings, Mark P, Williams, David A.   +9 more
core   +1 more source

Concluding remarks: Faraday Discussion on astrochemistry at high resolution

, 2023
Fifty years on from the first detailed chemical kinetic modelling of astronomical sources, I provide some introductory comments on the history of astrochemistry, summarise some personal views on the topics covered in this discussion meeting, and conclude
T. J. Millar, Millar, T. J.
core   +1 more source

Chemical Kinetics of 2‐, 4‐, and 2,4‐Seleno‐Uracils at Low Temperatures: Tautomerizations and Rotamerizations on Inert Matrices

International Journal of Chemical Kinetics, EarlyView.
ABSTRACT In the interstellar medium, chemical reactions proceed under conditions vastly different to those on Earth; these include extremely low temperatures and densities and take place in the gas phase and on water–ice grains. Understanding the energetics and more importantly the kinetics of such reactions is of relevance to the consequences on how ...
Judith Wurmel, John M. Simmie
wiley   +1 more source

Hydrogen Atom Transfer: An Intramolecular Main‐Group Metal‐Ligand Cooperative Biradical Pathway

Chinese Journal of Chemistry, Volume 44, Issue 13, Page 2121-2127, 1 July 2026.
The molecular system consisting of a main‐group metal and a redox‐active ligand, ((2,6‐iPr2C6H3)NC(Me))2AlCl(THF), has been shown to react with azides and diazomethanes, yielding products through both a biradical intermediate and a hydrogen atom transfer process.
Ting Chen, Shaoying Ju, Rui Wei, Weili Yan, Yufen Zhao, Douglas W. Stephan, Yile Wu   +6 more
wiley   +1 more source

Cretaceous-Tertiary boundary deposits in Denmark: A diachroneity [PDF]

Journal of the Serbian Chemical Society, 2004
The lateral distribution of predominantly terrestrial kerogen or humics enriched with copper(II) porphyrins (Cu-P) across the Danish marine basin implies that the alleged Cretaceous-Tertiary (KT) boundary deposits in western Denmark (at the Nye Kløv ...
Premović Pavle I.
doaj   +1 more source