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Orbital Specific Chemistry: Controlling the Pathway in Single-Molecule Dissociation
Journal of Chemical Physics, 2005A scanning tunneling microscope (STM) was used to control the pathway of the dissociation of single O2 molecules chemisorbed on Ag(110) at 13K. Tunneling of electrons from the STM tip into the O2 caused dissociation of the molecule, giving rise to two adsorbed O atoms separated along the [11¯0] direction. In contrast, the ejection of electrons from the
Wilson Ho, J R Hahn
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INVESTIGATION OF THE DISSOCIATION CHEMISTRY OF NF2 COMPOUNDS
1963Abstract : Thermal dissociation experiments using adiabatic compression as the means of heating were discontinued. A study of the adiabatic compression process in the TEI apparatus showed that because of the mechanical properties of the compressor and the high thermal conductivity of helium, a maximum temperature constant enough for kinetic and ...
P. L. Goodfriend, U. V. Henderson
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Chemistry Models for Air Dissociation
1996The main problem of air dissociation description at high temperatures is the thermal non-equilibrium of reactant in strong shock waves. The concept of thermal non-equilibrium is peculiar to chemical reacting system without equilibrium between vibrational and translational degrees of freedom for reacting molecules. In order to elaborate and frame models
S. A. Losev +4 more
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Theoretical investigation of the dissociation chemistry of formyl halides in the gas phase
Physical Chemistry Chemical Physics, 2020Halogen substituted analogues of formaldehyde, HXCO (X = F, Cl, Br, and I), play a crucial role in the degradation of stratospheric ozone.
Anchal Gahlaut, Manikandan Paranjothy
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Dissociation of the Ethyl Radical: An Exercise in Computational Chemistry
Journal of Chemical Education, 2014A set of exercises for use in a typical physical chemistry laboratory course are described, modeling the unimolecular dissociation of the ethyl radical to form ethylene and atomic hydrogen. Students analyze the computational results both qualitatively and quantitatively.
Nahal Nassabeh +2 more
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Intriguing roles of reactive intermediates in dissociation chemistry of N-phenylcinnamides
Organic & Biomolecular Chemistry, 2012In mass spectrometry of protonated N-phenylcinnamides, the carbonyl oxygen is the thermodynamically most favorable protonation site and the added proton is initially localized on it. Upon collisional activation, the proton transfers from the carbonyl oxygen to the dissociative protonation site at the amide nitrogen atom or the α-carbon atom, leading to
Cheng, Guo +5 more
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Associating Physics and Chemistry to Dissociate Molecules
Historical Studies in the Natural Sciences, 2016A case study of the Clausius-Williamson hypothesis sheds light on the development of the physical sciences during the nineteenth century. In the 1850s, Rudolf Clausius and Alexander William Williamson independently developed similar hypotheses at a time when physics and chemistry were beginning to be considered independent endeavors.
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Sequence Ion Structures and Dissociation Chemistry of Deprotonated Sucrose Anions
Journal of the American Society for Mass Spectrometry, 2018We investigate the tandem mass spectrometry of regiospecifically labeled, deprotonated sucrose analytes. We utilize density functional theory calculations to model the pertinent gas-phase fragmentation chemistry of the prevalent glycosidic bond cleavages (B1-Y1 and C1-Z1 reactions) and compare these predictions to infrared spectroscopy experiments on ...
Bythell, Benjamin +4 more
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Dissociative Pathways in Platinum(ll) Chemistry
Comments on Inorganic Chemistry, 1990Abstract Steric and electronic factors favor the addition of a fifth ligand to a square planar d8 complex to form five coordinate species either as discrete compounds or reaction intermediates. The search for factors promoting the conversion of the normal associative mode of reaction into a dissociative process has attracted much attention. The attempt
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The dissociation chemistry of permethylated guanosines as articulated by MS/MS
Tetrahedron Letters, 1993Abstract Permethylation of covalently modified guanosines is shown to be an effective means of increasing the abundance of structurally significant fragment ions when protonated base ions from nucleosides are subjected to collision-induced dissociation in MS/MS.
John M. Gregson, James A. McCloskey
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