Results 41 to 50 of about 2,333 (202)

Photoelectron Spectroscopy of the Phosphorus Monosulfide (PS) and Phosphorus Monoxide (PO) Radicals

Small Structures, Volume 7, Issue 1, January 2026.
Sketch of the experiment to measure the photo electron spectrum of the PS radical produced in situ with a mixture of PH3, H2S and F atoms. PO and PS radicals are the smallest units of phosphorus oxides and phosphorus sulfides, respectively, two rich families of refractory compounds widely employed in industrial and technological applications. These two
Pedro Recio, Jorge Alonso de la Fuente, Myriam Drissi, Niyazi Bulut, Jean Christophe Loison, Gustavo Garcia, Susana Gomez Carrasco, Cristina Sanz Sanz, Luis Bañares, Sonia Marggi Poullain, Alexandre Zanchet   +10 more
wiley   +1 more source

Infrared Spectra of Solid HCN Embedded in Various Molecular Environments for Comparison with the Data Obtained with JWST

The Astrophysical Journal Letters
Hydrogen cyanide (HCN) molecules serve as an important tracer for the chemical evolution of elemental nitrogen in the regions of star and planet formation.
Maksim Ozhiganov, Mikhail Medvedev, Varvara Karteyeva, Ruslan Nakibov, Uliana Sapunova, Vadim Krushinsky, Ksenia Stepanova, Anastasia Tryastsina, Aleksandr Gorkovenko, Gleb Fedoseev, Anton Vasyunin   +10 more
doaj   +1 more source

Mid‐infrared Spectroscopy of Protonated Benzonitrile, 2‐Cyanonaphthalene, and 9‐Cyanoanthracene for Astrochemical Consideration

ChemPhysChem, Volume 26, Issue 24, December 16, 2025.
Experimental infrared absorption spectra of three protonated cyano‐substituted PAHs measured by infrared multiple photon dissociation using the free‐electron laser Free‐Electron Laser for Infrared eXperiments are studied. These spectra are compared to an emission spectrum measured by JWST, and the largest measured protonated cyano‐PAH, cyanoanthracene,
Anne P. Rasmussen, Corentin Rossi, Bérenger Gans, Laura Finazzi, Jos Oomens, Giel Berden, Ugo Jacovella   +6 more
wiley   +1 more source

Redefining proton affinity for heteronuclear molecular species: quantum chemical insights

Discover Chemistry
One of the main problems with experimental methods for detecting proton affinity (PA) is that they cannot perform site-specific protonation. For heteronuclear molecular species that have two or more protonation sites, the experimental PA measurement only
E. E. Etim, J. P. Shinggu, H. S. Samuel, B. Bako, D. K. Sahoo, L. Mweene, S. Kaya   +6 more
doaj   +1 more source

Pathways to Detection of Strongly-Bound Inorganic Species: The Vibrational and Rotational Spectral Data of AlH2OH, HMgOH, AlH2NH2, and HMgNH2

Frontiers in Astronomy and Space Sciences, 2021
Small, inorganic hydrides are likely hiding in plain sight, waiting to be detected toward various astronomical objects. AlH2OH can form in the gas phase via a downhill pathway, and the present, high-level quantum chemical study shows that this molecule ...
Alexandria G. Watrous, Megan C. Davis, Ryan C. Fortenberry   +2 more
doaj   +1 more source

Kinetics and Thermodynamics of Tautomerization Reactions of 1,1‐ and 1,2‐Ethenediols

International Journal of Chemical Kinetics, Volume 57, Issue 12, Page 687-696, December 2025.
ABSTRACT Tautomerism is a common phenomenon amongst organic molecules with easily interconvertible isomers, which can impact drug action and toxicity. Here we are interested in the enols of carboxylic acids, which are known to be much less stable than their acid counterparts.
Judith Würmel, John M. Simmie
wiley   +1 more source

Interstellar formation of lactaldehyde, a key intermediate in the methylglyoxal pathway

Nature Communications
Aldehydes are ubiquitous in star-forming regions and carbonaceous chondrites, serving as essential intermediates in metabolic pathways and molecular mass growth processes to vital biomolecules necessary for the origins of life.
Jia Wang, Chaojiang Zhang, Joshua H. Marks, Mikhail M. Evseev, Oleg V. Kuznetsov, Ivan O. Antonov, Ralf I. Kaiser   +6 more
doaj   +1 more source

Fate of the Gas-Phase Reaction Between Oxirane and the CN Radical in Interstellar Conditions

Frontiers in Astronomy and Space Sciences, 2021
The escalating identification of new complex molecules in the interstellar medium claims for potential formation routes of such species. In this regard, the present work considers the reaction between oxirane and the CN radical as a feasible formation ...
Silvia Alessandrini, Silvia Alessandrini, Mattia Melosso   +2 more
doaj   +1 more source

Astrochemistry

Plasma Sources Science and Technology, 2015
In the last 40 years a wide range of molecules, including neutrals, cations and anions, containing up to 13 atoms—in addition to detections of C60 and C70 — have been found in the harsh environment of the interstellar medium. The exquisite sensitivity and very high spectral and, more recently, spatial resolution, of modern telescopes has enabled the ...
openaire   +3 more sources

Spectroscopy: Aromatic astrochemistry [PDF]

Nature Reviews Chemistry, 2018
The first detection of rotational features of benzonitrile offers the opportunity to undesrtand the origin of PAHs in space.
openaire   +1 more source