Results 1 to 10 of about 389,904 (244)
Peptide radical cations: gender determines dissociation chemistry. [PDF]
Mass Spectrom (Tokyo), 2013 Peptide radicals play a significant role in biology as well as mass spectrometry. They can be differentiated into two groups: conventional hydrogen-deficient radicals, e.g. M(+•) as in electron ionization, and much more rare hydrogen-abundant radicals, e.g. [M+2H](+•), as in electron capture/transfer dissociation.
A Zubarev R.
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Electron Attachment to 5-Fluorouracil: The Role of Hydrogen Fluoride in Dissociation Chemistry. [PDF]
Int J Mol Sci, 2022 We investigate dissociative electron attachment to 5-fluorouracil (5-FU) employing a crossed electron-molecular beam experiment and quantum chemical calculations. Upon the formation of the 5-FU− anion, 12 different fragmentation products are observed, the most probable dissociation channel being H loss.
Arthur-Baidoo E +5 more
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Dissociative recombination as primary dissociation channel in plasma chemistry [PDF]
Journal of Physics: Conference Series, 2009 Molecule formation, surface modification and deposition in plasmas can in first order be described as dissociation in the plasma and association of fragments at the surface. In active plasmas ionization and dissociation by electrons is accompanied by excitation.
Schram, D.C. +3 more
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Dissociative Recombination: building and destroying aspects in interstellar chemistry [PDF]
Journal of Physics: Conference Series, 2011 We discuss the ionic composition of the interstellar molecular gas. Particular emphasis is put on the halogenic ions such as H2Cl+ and H2F+ for which no DR studies have been published up to now.
Evelyne Roueff, Eric Herbst
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Cosmic Ray Dissociation of Molecular Hydrogen and Dense Cloud Chemistry [PDF]
Research Notes of the AAS, 2020 Abstract Dissociation of molecular hydrogen by secondary electrons produced by cosmic ray or X-ray ionization plays a crucial role in the chemistry of the densest part of molecular clouds. Here we study the effect of the mean kinetic energy of secondary electrons on this process. We compare predictions using a range of secondary electron
Gargi Shaw +2 more
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Protonated α-N-Acetyl Galactose Glycopeptide Dissociation Chemistry
Journal of the American Society for Mass Spectrometry, 2022 We recently provided mass spectrometric, H/D labeling, and computational evidence of pyranose to furanose N-acetylated ion isomerization reactions that occurred prior to glycosidic bond cleavage in both O- and N-linked glycosylated amino acid model systems (Guan et al. Phys. Chem. Chem. Phys., 2021, 23, 23256-23266).
Jordan M. Rabus +5 more
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Dissociation chemistry of hydrogen halides in water [PDF]
The Journal of Chemical Physics, 2004 To understand the mechanism of aqueous acid dissociation, which plays a fundamental role in aqueous chemistry, the ionic dissociation of HX acids (X=F, Cl, Br, and I) in water clusters up to hexamer is examined using density functional theory and Møller–Plesset second-order perturbation methods (MP2).
Odde, S +4 more
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Bose-enhanced chemistry: Amplification of selectivity in the dissociation of molecular Bose-Einstein condensates [PDF]
, 2002 We study the photodissociation chemistry of a quantum degenerate gas of bosonic triatomic $ABC$ molecules, assuming two open rearrangement channels ($AB+C$ or $A+BC$).
A. Vardi +22 more
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From quantum chemistry to dissociation kinetics: what we need to know [PDF]
Molecular Physics, 2014 The relationship between rate constants for dissociation and the reverse association reactions and their potential energy surfaces is illustrated. The reaction systems e− + SF6 ↔ SF6− →SF5− + F, H + CH3 ↔CH4, 2 CF2 ↔ C2F4, H + O2 →HO2, HO + O ↔HO2 ↔ H + O2, and C + HO →CHO are chosen as representative examples.
Jürgen Troe
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