Relevant bibliographies by topics / Acetaldehyde Spectra

Academic literature on the topic 'Acetaldehyde Spectra'

Author: Grafiati
Published: 10 December 2022
Last updated: 29 January 2023

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Journal articles on the topic "Acetaldehyde Spectra"

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Hudson, Reggie L., and Robert F. Ferrante. "Quantifying acetaldehyde in astronomical ices and laboratory analogues: IR spectra, intensities, 13C shifts, and radiation chemistry." Monthly Notices of the Royal Astronomical Society 492, no. 1 (December 11, 2019): 283–93. http://dx.doi.org/10.1093/mnras/stz3323.

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ABSTRACT Acetaldehyde is of interest to astrochemists for its relevance to both interstellar and cometary chemistry, but little infrared (IR) spectral data have been published for the solid phases of this compound. Here we present IR spectra of three forms of solid acetaldehyde, with spectra for one form being published for the first time. Direct measurements of band strengths and absorption coefficients also are reported for the first time for amorphous aldehyde, the form of greatest interest for astrochemical work. An acetaldehyde band strength at ∼1350 cm−1 that has been used as a reference for about 20 yr is seen to be in error by about 80 per cent when compared to the direct measurements presented here. Spectra and peak positions also are presented for H13C(O)13CH3, and then used for the first identification of ketene as a radiation product of solid acetaldehyde.
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Jen, Shih-Hui, Tsing-Jung Hsu, and I.-Chia Chen. "Fluorescence lifetime of rovibrational states of h4-acetaldehyde and spectra of d4-acetaldehyde." Chemical Physics 232, no. 1-2 (June 1998): 131–39. http://dx.doi.org/10.1016/s0301-0104(98)00097-4.

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Yakovlev, N. N., and I. A. Godunov. "The electronic spectra of acetaldehyde-h4 and -d4." Canadian Journal of Chemistry 70, no. 3 (March 1, 1992): 931–34. http://dx.doi.org/10.1139/v92-125.

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The [Formula: see text] electronic absorption spectra of acetaldehyde-h4 and -d4 were recorded in the vapour phase at room temperature. The major experimental requirement was a high pressure × path length (650 Torr × 140 m). The vibrational structure of these electronic transitions was interpreted in terms of the torsional modes [Formula: see text] and [Formula: see text] attached to the [Formula: see text] out-of-plane bending mode. The main CH3CHO results agreed with those obtained earlier (Moule and Ng); the values of the [Formula: see text] transition and torsional barrier height were 27240.1 and 590 cm−1 respectively. Three inversion (out-of-plane bending) energy levels in the excited [Formula: see text] state were found and the inversion potential function was determined with a barrier height of 1110 cm−1. The CD3CDO spectrum confirmed the CH3CHO analysis. The values of the [Formula: see text] transition and torsional barrier height were equal to 27270 and 610 cm−1. Keywords: vibronic spectrum, acetaldehyde, molecular structure.
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Elkeurti, M., L. H. Coudert, I. R. Medvedev, A. Maeda, F. C. De Lucia, A. R. W. McKellar, N. Moazzen-Ahmadi, D. Appadoo, and S. Toumi. "The microwave and far infrared spectra of acetaldehyde-." Journal of Molecular Spectroscopy 263, no. 2 (October 2010): 145–49. http://dx.doi.org/10.1016/j.jms.2010.07.005.

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Guidolin, Valeria, Erik S. Carlson, Andrea Carrà, Peter W. Villalta, Laura A. Maertens, Stephen S. Hecht, and Silvia Balbo. "Identification of New Markers of Alcohol-Derived DNA Damage in Humans." Biomolecules 11, no. 3 (February 27, 2021): 366. http://dx.doi.org/10.3390/biom11030366.

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Alcohol consumption is a risk factor for the development of several cancers, including those of the head and neck and the esophagus. The underlying mechanisms of alcohol-induced carcinogenesis remain unclear; however, at these sites, alcohol-derived acetaldehyde seems to play a major role. By reacting with DNA, acetaldehyde generates covalent modifications (adducts) that can lead to mutations. Previous studies have shown a dose dependence between levels of a major acetaldehyde-derived DNA adduct and alcohol exposure in oral-cell DNA. The goal of this study was to optimize a mass spectrometry (MS)-based DNA adductomic approach to screen for all acetaldehyde-derived DNA adducts to more comprehensively characterize the genotoxic effects of acetaldehyde in humans. A high-resolution/-accurate-mass data-dependent constant-neutral-loss-MS3 methodology was developed to profile acetaldehyde-DNA adducts in purified DNA. This resulted in the identification of 22 DNA adducts. In addition to the expected N2-ethyldeoxyguanosine (after NaBH3CN reduction), two previously unreported adducts showed prominent signals in the mass spectra. MSn fragmentation spectra and accurate mass were used to hypothesize the structure of the two new adducts, which were then identified as N6-ethyldeoxyadenosine and N4-ethyldeoxycytidine by comparison with synthesized standards. These adducts were quantified in DNA isolated from oral cells collected from volunteers exposed to alcohol, revealing a significant increase after the exposure. In addition, 17 of the adducts identified in vitro were detected in these samples confirming our ability to more comprehensively characterize the DNA damage deriving from alcohol exposures.
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Kleiner, I., F. J. Lovas, and M. Godefroid. "Microwave Spectra of Molecules of Astrophysical Interest. XXIII. Acetaldehyde." Journal of Physical and Chemical Reference Data 25, no. 4 (July 1996): 1113–210. http://dx.doi.org/10.1063/1.555983.

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Makulski, Włodzimierz, and Agata J. Wikieł. "Liquid and gas phase NMR spectra of 13CH313CHO acetaldehyde." Journal of Molecular Structure 1152 (January 2018): 145–53. http://dx.doi.org/10.1016/j.molstruc.2017.09.066.

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Terwisscha van Scheltinga, J., N. F. W. Ligterink, A. C. A. Boogert, E. F. van Dishoeck, and H. Linnartz. "Infrared spectra of complex organic molecules in astronomically relevant ice matrices." Astronomy & Astrophysics 611 (March 2018): A35. http://dx.doi.org/10.1051/0004-6361/201731998.

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Context. The number of identified complex organic molecules (COMs) in inter- and circumstellar gas-phase environments is steadily increasing. Recent laboratory studies show that many such species form on icy dust grains. At present only smaller molecular species have been directly identified in space in the solid state. Accurate spectroscopic laboratory data of frozen COMs, embedded in ice matrices containing ingredients related to their formation scheme, are still largely lacking.Aim. This work provides infrared reference spectra of acetaldehyde (CH3CHO), ethanol (CH3CH2OH), and dimethyl ether (CH3OCH3) recorded in a variety of ice environments and for astronomically relevant temperatures, as needed to guide or interpret astronomical observations, specifically for upcoming James Webb Space Telescope observations.Methods. Fourier transform transmission spectroscopy (500–4000 cm−1/20–2.5 μm, 1.0 cm−1 resolution) was used to investigate solid acetaldehyde, ethanol and dimethyl ether, pure or mixed with water, CO, methanol, or CO:methanol. These species were deposited on a cryogenically cooled infrared transmissive window at 15 K. A heating ramp was applied, during which IR spectra were recorded until all ice constituents were thermally desorbed.Results. We present a large number of reference spectra that can be compared with astronomical data. Accurate band positions and band widths are provided for the studied ice mixtures and temperatures. Special efforts have been put into those bands of each molecule that are best suited for identification. For acetaldehyde the 7.427 and 5.803 μm bands are recommended, for ethanol the 11.36 and 7.240 μm bands are good candidates, and for dimethyl ether bands at 9.141 and 8.011 μm can be used. All spectra are publicly available in the Leiden Database for Ice.
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Sheps, Leonid, Ashley M. Scully, and Kendrew Au. "UV absorption probing of the conformer-dependent reactivity of a Criegee intermediate CH3CHOO." Phys. Chem. Chem. Phys. 16, no. 48 (2014): 26701–6. http://dx.doi.org/10.1039/c4cp04408h.

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Transient absorption probing of a Criegee intermediate acetaldehyde oxide reveals the UV spectra of the two possible conformers, syn- and anti-CH3CHOO, and enables direct measurements of conformer-dependent reactivity.
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Zagorodskikh, S., M. Vapa, O. Vahtras, V. Zhaunerchyk, M. Mucke, J. H. D. Eland, R. J. Squibb, et al. "An experimental and theoretical study of core–valence double ionisation of acetaldehyde (ethanal)." Physical Chemistry Chemical Physics 18, no. 4 (2016): 2535–47. http://dx.doi.org/10.1039/c5cp05758b.

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Core–valence double ionisation spectra of acetaldehyde (ethanal) are presented at photon energies above the carbon and oxygen 1s ionisation edges, measured by a versatile multi-electron coincidence spectroscopy technique and analyzed by means of quantum chemical calculations of transition energies.
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Dissertations / Theses on the topic "Acetaldehyde Spectra"

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Youkharibache, Philippe. "Systèmes de coordonnées dans l'étude des vibrations moléculaires : détermination ab-inito des champs de force : confrontation expérimentale et transférabilité." Paris 6, 1986. http://www.theses.fr/1986PA066322.

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Définition rigoureuse du repère d’Eckart et démonstration de l'isomorphisme des espaces internes associés aux membres d'une série isotopique : l'un d'entre eux fournit une interprétation physique des coordonnées de Wilson et permet l'affinement du champ de forces commun à une série. Obtention de forces ab initio réalistes en utilisant des facteurs d'échelle aux diverses coordonnées de symétrie locale et transférables entre groupes de même géométrie. Optimisation pour la série éthylène, butadiène, méthylène-imine, éthylidène-imine, n-méthyl-méthylène-imine n-méthyl-éthylène-imine, allylène-imine; transfert pour la construction des champs de forces des ions tétraméthyl-méthylène- et -allylène-iminium, et attribution des modes de vibrations.
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Ngono, Bernadette. "Organométalliques à carbonyle masqué : quelques propriétés du lithio-1 triméthylsiloxy-2 éthylène." Rouen, 1989. http://www.theses.fr/1989ROUES021.

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La condensation du lithio-1 triméthylsiloxy-2 éthylène avec les chlorotrialkylsilanes et le triflate de t-butyldiméthylsilyle conduit aux éthers d'énols silyles -silyles. L'hydrolyse acide de ces derniers permet d'isoler le t-butyldiméthylsilyl acétaldéhyde. D'autre part, la condensation du lithio-1 triméthylsiloxy-2 éthylène avec les chlorures d'acides non énolisables conduit a des esters d'énols de -cétoaldéhydes
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Huang, Cheng-Liang, and 黃正良. "High-resolution spectra and dynamical study of jet-cooled sulfur dioxide and acetaldehyde." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/17086923634106183617.

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Chou, Yung-Ching, and 周永慶. "Rotationally resolved spectra of transitions involving motion of the methyl group of acetaldehyde in the system A1A" - X1A''." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/42114586393688087573.

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Lee, Shih-Huang, and 李世煌. "Photodissociation of acetaldehyde and spectro- scopy of HCO." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/33351404177608612875.

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Shiu, Ying-Jen, and 許瑛珍. "The photolysis product of Acetaldehyde-HCO B-X spectrum and HCO B radiation lifetime." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/57510417923954058199.

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Xu, Ying-Zhen, and 許瑛珍. "The photolysis product of Acetaldehyde-HCO B-X spectrum and HCO B radiation lifetime." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/95324595963095134600.

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Books on the topic "Acetaldehyde Spectra"

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Eland, John H. D., and Raimund Feifel. Mainly aliphatic molecules. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198788980.003.0007.

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Double photoionisation spectra of homologous iodides and alcohols, acetonitrile, methyl mercaptan, acetaldehyde, acetone, norbornane, cyclooctatetraene, and TMMD are presented. Effects on the spectra of these molecules from electronic state congestion and geometry changes on ionisation mean that only the lowest dication states can be identified. As little detailed analysis of the individual spectra is possible, this chapter presents the molecules in groups rather than individually. In this chapter, molecules are ordered more thematically than strictly by size. The chapter starts with four homologous iodides and three homologous alcohols. Then this chapter takes some individual molecules with different substituent groups and proceed to a few larger molecules. The chapter demonstrates the dominant effect of the distance to which charges can separate in the dication on the double ionisation threshold.
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Conference papers on the topic "Acetaldehyde Spectra"

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Bégué, Didier, Claude Pouchan, Theodore E. Simos, and George Maroulis. "Modeling the IR Spectra of Acetaldehyde from a New Vibrational Configuration Interaction Method." In COMPUTATIONAL METHODS IN SCIENCE AND ENGINEERING: Theory and Computation: Old Problems and New Challenges. Lectures Presented at the International Conference on Computational Methods in Science and Engineering 2007 (ICCMSE 2007): VOLUME 1. AIP, 2007. http://dx.doi.org/10.1063/1.2836025.

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Ye, F. X., A. Ohmori, and C. J. Li. "Investigation of the Photocatalytic Efficiencies of Plasma Sprayed TiO2-Fe3O4 Coatings." In ITSC2003, edited by Basil R. Marple and Christian Moreau. ASM International, 2003. http://dx.doi.org/10.31399/asm.cp.itsc2003p0169.

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Abstract Owing to the much concern with global environmental problem, photocatalytic TiO2 coatings were obtained using plasma spraying technique. The influences of the content of Fe3O4 additive to the TiO2 powder on the phase composition, microstructure and photo-absorption of plasma sprayed TiO2 coatings were systematically studied. The photocatalytic efficiency of the sprayed coatings is evaluated through the photo mineralization of acetaldehyde. The UV-VIS-NIR absorption spectra of the deposited coatings were obtained by using Shimadzu UV-3100PC scanning spectrophotometer. The results showed that the TiO2-Fe3O4 coatings consist of anatase TiO2, rutile TiO2 and FeTiO3 ilmenite, and Fe2TiO5 pseudobrookite phase appears when the content of Fe3O4 additive is equal to or over 10%. The content of anatase TiO2 in the sprayed coatings decreases from 14.8% to 5.9% with the increasing of Fe3O4 content to 32.6%. It was found that TiO2 coatings can decompose acetaldehyde under the illumination of ultraviolet rays, and the degrading efficiency is improved with an increase in the content of FeTiO3 in the coatings. However, the presence of large amount of Fe2TiO5 compound will substantially lower the photocatalytic efficiency of the sprayed TiO2-Fe3O4 coatings for the unfavorable photo-excited electron-hole transfer process.
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Ilyushin, V., Jon Hougen, Isabelle Kleiner, Georg Mellau, Christian Sydow, Christof Maul, Sigurd Bauerecker, et al. "ISOLATED SMALL-AMPLITUDE FUNDAMENTALS EMBEDDED IN A PURE TORSIONAL BATH: FIR AND MW SPECTRA OF THE _10 VIBRATIONAL MODE AND HOT TORSIONAL BANDS OF ACETALDEHYDE." In 74th International Symposium on Molecular Spectroscopy. Urbana, Illinois: University of Illinois at Urbana-Champaign, 2019. http://dx.doi.org/10.15278/isms.2019.mi05.

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