Results 31 to 40 of about 47,611 (304)

Assessing The Performance Of Rotational Spectroscopy In Chiral Analysis [PDF]

open access: yes, 2021
The application of rotational spectroscopy-based methods as tools to deliver accurate and precise chirality-sensitive information are still breaking ground, but their applicability in the challenging field of analytical chemistry is already clear.
Schnell, Melanie
core   +1 more source

Skeletal Torsion Tunneling and Methyl Internal Rotation: The Coupled Large Amplitude Motions in Phenyl Acetate

open access: yesMolecules, 2022
The rotational spectrum of phenyl acetate, CH3COOC6H5, is measured using a free jet absorption millimeter-wave spectrometer in the range from 60 to 78 GHz and two pulsed jet Fourier transform microwave spectrometers covering a total frequency range from ...
Lynn Ferres   +6 more
doaj   +1 more source

A High Speed Fitting Program For Rotational Spectroscopy [PDF]

open access: yes, 2022
The ongoing development of rotational spectroscopy through the growth of broadband capabilities and automated acquisition schemes regularly generates a wealth of data to be analyzed. However, assigning these data is often a bottleneck to obtaining useful
Carroll, Brandon
core   +1 more source

Accurate Molecular Structure Determination by Femtosecond Degenerate Four-Wave Mixing

open access: yesCHIMIA, 2006
Femtosecond degenerate four-wave mixing (fs-DFWM) is a Raman scattering type of rotational coherence spectroscopy that can be utilized for the measurement of highly accurate rotational and centrifugal constants of nonpolar molecules.
Dominique S. Kummli   +2 more
doaj   +1 more source

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

open access: yesMolecules, 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   +2 more
doaj   +1 more source

Sensing Chirality with Rotational Spectroscopy [PDF]

open access: yesAnnual Review of Physical Chemistry, 2018
Chiroptical spectroscopy techniques for the differentiation of enantiomers in the condensed phase are based on an established paradigm that relies on symmetry breaking using circularly polarized light. We review a novel approach for the study of chiral molecules in the gas phase using broadband rotational spectroscopy, namely microwave three-wave ...
Rosa Domingos, Sergio Miguel   +2 more
openaire   +4 more sources

Rotational spectroscopy with an optical centrifuge [PDF]

open access: yesPhysical Chemistry Chemical Physics, 2014
We demonstrate a new spectroscopic method for studying electronic transitions in molecules with extremely broad range of angular momentum. We employ an optical centrifuge to create narrow rotational wave packets in the ground electronic state of $^{16}$O$_2$.
Korobenko, Aleksey   +3 more
openaire   +3 more sources

Feedback Optimization Strategy for Rotational Alignment Echo Spectroscopy

open access: yesAdvanced Photonics Research, 2023
The recent discovery of rotational echoes has contributed to extend the applications of field‐free molecular alignment to short time scales, namely to a temporal region preceding the first alignment revival of the molecule. Most echo measurements require
Manon Bournazel   +5 more
doaj   +1 more source

Protonation of apolar species: From Cl2H+ to (E)-NCCHCHCNH+ through computational investigations

open access: yesFrontiers in Astronomy and Space Sciences, 2023
Radioastronomy is a powerful tool for the discovery of molecules in space but it requires molecular species to be polar. The observation of apolar species can be however enabled by protonation, which occurs from reaction with the abundant H3+ ion ...
Silvia Alessandrini   +3 more
doaj   +1 more source

Pure Rotational Spectrum of Benzophenone Detected by Broadband Microwave Spectrometer in the 2–8 GHz Range

open access: yesApplied Sciences, 2020
The investigation on microwave spectrum of benzophenone was conducted with a recently constructed broadband chirped-pulse Fourier transform microwave spectrometer with a heating nozzle in the 2–8 GHz range.
Haoyang Tan   +7 more
doaj   +1 more source

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