Results 21 to 30 of about 286 (83)

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

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

Deep Space Network Radio Science and Ground‐Based Planetary Radar in the Next Decade

Radio Science, Volume 60, Issue 7, July 2025.
Abstract The Deep Space Network (DSN) has been a core operational element of NASA's crewed and robotic exploration of the Solar System since the early 1960s. The primary role of the DSN has been to acquire telemetry and navigation data, but over the years, its radiometric and radar capabilities have expanded to form a system for obtaining unique ...
R. S. Park, J. E. Riedel, N. Rodriguez‐Alvarez, M. Brozovic, L. A. M. Benner, P. Vergados, D. Buccino, C. S. Jacobs, L. S. Locke, S. W. Asmar, R. Castano, T. J. W. Lazio, J. Jao, C. Lee   +13 more
wiley   +1 more source

Recent developments and applications of selected ion flow tube mass spectrometry (SIFT‐MS)

Mass Spectrometry Reviews, Volume 44, Issue 2, Page 101-134, March/April 2025.
Abstract Selected ion flow tube mass spectrometry (SIFT‐MS) is now recognized as the most versatile analytical technique for the identification and quantification of trace gases down to the parts‐per‐trillion by volume, pptv, range. This statement is supported by the wide reach of its applications, from real‐time analysis, obviating sample collection ...
David Smith, Patrik Španěl, Nicholas Demarais, Vaughan S. Langford, Murray J. McEwan   +4 more
wiley   +1 more source

Overtone Transition 2ν1 of HCO+ and HOC+: Origin, Radiative Lifetime, Collisional Quenching

ChemPhysChem, Volume 25, Issue 21, November 4, 2024.
The C−H/O−H stretch vibration overtone of one of the simplest molecular ion isomeric systems HCO+/HOC+ is studied in a cryogenic ion trap experiment. Moreover, our comprehensive “zero background” method enables the determination of radiative lifetimes and select quenching reaction rates at the same time.
Miguel Jiménez‐Redondo, Liliia Uvarova, Petr Dohnal, Miroslava Kassayová, Paola Caselli, Pavol Jusko   +5 more
wiley   +1 more source

Rotational Spectroscopy of the Acetone‐Water Complex: Large Amplitude Motions

ChemPhysChem, Volume 25, Issue 21, November 4, 2024.
The structure and dynamics of the acetone‐water complex were explored using jet‐cooled rotational spectroscopy and computational chemistry calculations. Our detailed rot‐tunneling analyses of acetone‐H2O and −D2O revealed that the interaction with water disrupts the equivalence of the two methyl rotors, resulting in a significantly lower methyl rotor ...
Jiao Gao, Colton D. Carlson, Javix Thomas, Yunjie Xu, Wolfgang Jäger   +4 more
wiley   +1 more source

Kinetics of direct and water‐mediated tautomerization reactions of four‐membered cyclic lactims to amides or lactams

International Journal of Chemical Kinetics, Volume 56, Issue 11, Page 649-660, November 2024.
Abstract As part of a series of studies of hydrogen‐atom transfer or tautomerization reactions of imidic acid‐amide species, H${\text{H}}$─O${\text{O}}$─C${\text{C}}$═N${\text{N}}$─ ⇌O$\rightleftharpoons {\text{O}}$═C${\text{C}}$─NH${\text{NH}}$─, we report the rate constants for a set of 16 four‐membered cyclic compounds at low, 50–300 K, and high ...
Judith Würmel, John M. Simmie
wiley   +1 more source

Accurate Experimental Structure of 1‐Chloronaphthalene

ChemPhysChem, Volume 25, Issue 11, June 3, 2024.
A detailed study of the spectrum of 1‐Chloronaphthalene, recorded using rotational spectroscopy, is presented. The high sensitivity of the chirped pulse FTMW instrument allows the detection of all the heavy‐atom isotopologues needed for the accurate determination of the experimental structure.
Pablo Pinacho, Pablo Gómez, Juan Carlos López, Susana Blanco   +3 more
wiley   +1 more source

Cryogenic Infrared Action Spectroscopy of [H₂NCO]⁺ and [H₂NCS]⁺, Protonated Forms of Interstellar HNCO and HNCS. [PDF]

J Phys Chem A
Gerlach M, Schneider NR, Petrić S, Kaur H, Changala PB, Redlich B, Brünken S.   +6 more
europepmc   +1 more source

The 130 to 375 GHz Rotational Spectroscopy of <i>s</i>-<i>trans</i>-(<i>Z</i>)-1-Cyano-1,3-butadiene (C₅H₅N): Analysis of the Lowest-Energy Vibrationally Excited Dyad (ν₁₉ and ν₂₇). [PDF]

J Phys Chem A
Dorman PM, Esselman BJ, Owen AN, Woods RC, McMahon RJ.   +4 more
europepmc   +1 more source