Results 11 to 20 of about 353 (134)
ChemPhysChem, Volume 24, Issue 20, October 17, 2023., 2023 Threshold photoelectron spectroscopy with vacuum ultraviolet synchrotron radiation and quantum chemical calculations shed new light on the ionization energies of xylyl, picolyl and lutidyl radicals. N‐ and CH3‐substituent effects on the ionization energies of benzyl‐type reactive intermediates are found to be position‐dependent and additive.
Keisuke Kanayama +5 more
wiley +1 more source
The Chemistry of the Cyaphide Ion
Angewandte Chemie International Edition, Volume 62, Issue 32, August 7, 2023., 2023 128 years after the erroneously assumed synthesis of sodium cyaphide, Na(CP), and 51 years after the definitive proof of the existence of HCP, the chemistry of the cyaphide anion has finally gained momentum. This review summarizes the chemistry of the cyaphide anion, (C≡P)−, from its beginnings to the state‐of‐the art.
Tim Görlich +5 more
wiley +1 more source
Vibrational Predissociation Spectra of C2N− and C3N−: Bending and Stretching Vibrations
ChemPhysChem, Volume 24, Issue 15, August 1, 2023., 2023 Infrared predissociation spectra of C2N−(H2) and C3N−(H2) is reported using a cryogenic ion trap at the FELIX Laboratory, thus allowing the detection of low‐lying bending and stretching vibrations of both anions simultaneously. Vibrational configuration interaction calculations validate the assignment.
Franziska Dahlmann +8 more
wiley +1 more source
First Observations With a GNSS Antenna to Radio Telescope Interferometer
Radio Science, Volume 58, Issue 8, August 2023., 2023 Abstract We describe the design of a radio interferometer composed of a Global Navigation Satellite Systems (GNSS) antenna and a Very Long Baseline Interferometry radio telescope. Our eventual goal is to use this interferometer for geodetic applications including local tie measurements.
J. Skeens +7 more
wiley +1 more source
The harsh environment where exoplanets live
Astronomische Nachrichten, Volume 343, Issue 4, May 2022., 2022 Abstract The X‐ray and Extreme Ultraviolet (XUV) actvity of the Sun has determined important effects on the planets around it. In particular, high doses of X‐rays, flares, and coronal mass ejections (CMEs) combined with masses and sizes of the planets and the shielding action of the planetary magnetic fields have determined the diverse habitability of ...
Ignazio Pillitteri
wiley +1 more source
Infrared Spectral Fingerprint of Neutral and Charged Endo- and Exohedral Metallofullerenes
The Astrophysical Journal Supplement Series, 2023 Small metal-containing molecules have been detected and recognized as one of the hybrid species that are efficiently formed in space, especially in the circumstellar envelopes of evolved stars.
R. Barzaga +7 more
doaj +1 more source
(New) molecular ions in the interstellar medium
EPJ Web of Conferences, 2015 We summarize the present knowledge on the molecular ionic content in the interstellar medium and in circumstellar envelopes. Emphasis is given on the most recent detections and the related chemical issues.
Roueff Evelyne
doaj +1 more source
Odessa Astronomical Publications, 2017 The main parameters of the close binaries V448 Cyg and XZ Cep were determined. Computation of the chemical composition of the atmospheres of their primary components showed the existence of the hydrogen deficiency in them.
L. V. Glazunova, G. V. Manilova
doaj +1 more source
MODELS OF CIRCUMSTELLAR MASERS IN BIPOLAR OUTFLOWS
Odessa Astronomical Publications, 2017 Sources of molecular maser radio emission in envelopes of late-type variable stars (red giants and supergiants) are considered. Radio and optical data on asymmetry of mass loss process in red giants are briefly reviewed.
G. M. Rudnitskij
doaj +1 more source
The Astrophysical Journal, 2023 We obtained accurate vibrational frequencies, rotational constants, and vertical transition energy for AlNH _2 (X ^1 A _1 ) and HAlNH(X ^1 A′) isomers using ab initio calculations at various levels of theory.
Tarek Trabelsi +2 more
doaj +1 more source