Results 11 to 20 of about 167,062 (317)

Inversion Motion of Xanthene and Detection of Its Oxidation Product Xanthone from Gas-Phase Rotational Spectroscopy [PDF]

Molecules
The rotational spectra of xanthene and its oxidation product xanthone were investigated by combining quantum chemical calculations with Fourier transform microwave spectroscopy in a jet-cooled environment.
Celina Bermúdez, Manuel Goubet, Elias M. Neeman   +2 more
doaj   +2 more sources

Characterizing the Interactions of Dimethyl Sulfoxide with Water: A Rotational Spectroscopy Study. [PDF]

J Phys Chem A, 2022
Lv D, Evangelisti L, Maris A, Song W, Salvitti G, Melandri S.   +5 more
europepmc   +3 more sources

Fragmentation Dynamics of Benzoyl Peroxide: Insights from Rotational Spectroscopy. [PDF]

J Phys Chem Lett
Mato S, Municio S, Alonso JL, Alonso ER, León I.   +4 more
europepmc   +2 more sources

Toward Accurate Formation Routes of Complex Organic Molecules in the Interstellar Medium: The Paradigmatic Cases of Acrylonitrile and Cyanomethanimine

Frontiers in Astronomy and Space Sciences, 2022
The investigation of reaction mechanisms in the interstellar medium requires the evaluation of reaction rates and branching ratios, which can be effectively obtained in the framework of the ab-initio transition state/master equation formalism.
Vincenzo Barone, Cristina Puzzarini
doaj   +1 more source

Decoding the Structure of Non-Proteinogenic Amino Acids: The Rotational Spectrum of Jet-Cooled Laser-Ablated Thioproline

Molecules, 2021
The broadband rotational spectrum of jet-cooled laser-ablated thioproline was recorded. Two conformers of this system were observed and identified with the help of DFT and ab initio computations by comparison of the observed and calculated rotational ...
Juan Carlos López, Alberto Macario, Andrés Verde, Alfonso Pérez-Encabo, Susana Blanco   +4 more
doaj   +1 more source

Chiral rotational spectroscopy [PDF]

Physical Review A, 2016
We introduce chiral rotational spectroscopy: a new technique that enables the determination of the orientated optical activity pseudotensor components $B_{XX}$, $B_{YY}$ and $B_{ZZ}$ of chiral molecules, in a manner that reveals the enantiomeric constitution of a sample and provides an incisive signal even for a racemate. Chiral rotational spectroscopy
Cameron, Robert B., Götte, Jörg B., Barnett, Stephen M.   +2 more
openaire   +6 more sources

CMOS System-on-Chip Spectrometer Processors for Spaceborne Microwave-to-THz Earth and Planetary Science and Radioastronomy

IEEE Journal of Microwaves, 2022
This article presents development of CMOS system-on-chip spectrometer processor for Spaceborne Earth Science, Planetary Science and Astronomy. The developed chip is intended for use in rotational emission spectroscopy observations from microwave to sub ...
Adrian Tang, Yangyho Kim, Yan Zhang, Gabriel Virbila, Nathaniel Livesey, Goutam Chattopadhyay, Subash Khanal, Jacob Kooi, Mau-Chung Frank Chang   +8 more
doaj   +1 more source

Rotational Rest Frequencies and First Astronomical Search of Protonated Methylamine

Frontiers in Astronomy and Space Sciences, 2022
We report first laboratory rest frequencies for rotational transitions of protonated methylamine, CH3NH3+, measured in a cryogenic 22-pole ion trap machine and employing an action spectroscopy scheme.
Philipp C. Schmid, Sven Thorwirth, Christian P. Endres, Matthias Töpfer, Álvaro Sánchez-Monge, Andreas Schwörer, Peter Schilke, Stephan Schlemmer, Oskar Asvany   +8 more
doaj   +1 more source

The LAM of the Rings: Large Amplitude Motions in Aromatic Molecules Studied by Microwave Spectroscopy

Molecules, 2022
Large amplitude motions (LAMs) form a fundamental phenomenon that demands the development of specific theoretical and Hamiltonian models. In recent years, along with the strong progress in instrumental techniques on high-resolution microwave spectroscopy
Ha Vinh Lam Nguyen, Walther Caminati, Jens-Uwe Grabow   +2 more
doaj   +1 more source

The Conformations of Isolated Gallic Acid: A Laser-Ablation Rotational Study

Molecules, 2022
The rotational spectrum of laser-ablated gallic acid has been recorded using CP-FTMW spectroscopy. Two rotamers have been detected, and their rotational spectra have been assigned and analyzed to obtain the molecular spectroscopic parameters.
Andrés Verde, Susana Blanco, Juan Carlos López   +2 more
doaj   +1 more source