Journal ArticleDOI
The two-top molecule 3-penten-2-one: Acetyl methyl torsion in α,β-unsaturated ketones
TLDR
In this article, the microwave spectrum of E-3-penten-2-one, also called methyl propenyl ketone, was recorded in a range from 2.0 to 26.5 GHz.About:
This article is published in Journal of Molecular Structure.The article was published on 2022-01-05. It has received 4 citations till now. The article focuses on the topics: Conformational isomerism & Methyl group.read more
Citations
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Two methyl internal rotations of 2-acetyl-4-methylthiophene explored by microwave spectroscopy and quantum chemistry.
TL;DR: In this article , the microwave spectrum of 2-acetyl-4-methylthiophene (2A4MT) was recorded in the frequency range from 2 to 26.5 GHz using a molecular jet Fourier transform microwave spectrometer, revealing two conformers, syn and anti.
Journal ArticleDOI
Benchmarking acetylthiophene derivatives: methyl internal rotations in the microwave spectrum of 2-acetyl-5-methylthiophene.
TL;DR: The microwave spectrum of 2-acetyl-5-methylthiophene (2A5MT) was recorded using a molecular jet Fourier transform microwave spectrometer working in the frequency range of 2 to 26.5 GHz as discussed by the authors.
Journal ArticleDOI
The LAM of the Rings: Large Amplitude Motions in Aromatic Molecules Studied by Microwave Spectroscopy
TL;DR: In this paper , the authors summarize three types of LAMs: internal rotation, inversion tunneling, and ring puckering, which are frequently observed in aromatic five-membered rings such as furan, thiophene, pyrrole, thiazole, and oxazole derivatives.
Journal ArticleDOI
Benchmarking quantum chemical methods for accurate gas-phase structure predictions of carbonyl compounds: the case of ethyl butyrate
TL;DR: In this paper , the microwave spectrum of ethyl butyrate was analyzed in the scope of a systematic investigation to benchmark state-of-the-art exchange correlation functionals and ab initio methods, to accurately predict the lowest energy conformers of carbonyl compounds in their isolated state.
References
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Journal ArticleDOI
A multioctave coaxially oriented beam‐resonator arrangement Fourier‐transform microwave spectrometer
TL;DR: In this paper, the design, performance, and operation of a broadband (3-26.5 GHz) high-resolution microwave spectrometer is described, where a coaxially oriented beam resonator arrangement (COBRA) is formed by a confocal pair of mirrors incorporating an electromechanical valve and employing two pairs of microwave antennas.
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The Microwave Spectrum of trans-2,3-Dimethyloxirane in Torsional Excited States
H. Hartwig,Helmut Dreizler +1 more
TL;DR: In this paper, an analysis of internal rotation splittings of the observed rotational transitions was performed using the internal axis method (or ''combined axis method''") with a newly developed program accounting for the top-top coupling.
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Notizen: A Pulsed Molecular Beam Microwave Fourier Transform Spectrometer with Parallel Molecular Beam and Resonator Axes
J.-U Grabow,W. Stahl +1 more
TL;DR: In this paper, the authors report on first experiences with a pulsed molecular beam microwave Fourier transform spectrometer with parallel molecular beam and resonator axes, which shows up a high resolution and sensitivity.
Journal ArticleDOI
Equilibrium conformations of four- and five-membered cyclic molecules in the gas phase: determination and classification
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Electromagnetic Waves of 1.1 cm Wave-Length and the Absorption Spectrum of Ammonia
C. E. Cleeton,N. H. Williams +1 more
TL;DR: In this paper, a spectrometer with a grating of the echelette type was used in mapping the absorption spectrum of ammonia gas in the region from 1 to 4 cm wave-length.