Results 291 to 300 of about 380,728 (341)

Gas-Phase Dissociation Chemistry of Deprotonated RGD

Journal of the American Society for Mass Spectrometry, 2020
We investigate the structure and dissociation pathways of the deprotonated amphoteric peptide arginylglycylasparic acid, [RGD-H]-. We model the pertinent gas-phase structures and fragmentation chemistry of the precursor anions and predominant sequence-informative bond cleavages (b2+H2O, c2, and z1 peaks) and compare these predictions to our tandem mass
Jordan M. Rabus, Jordan M. Rabus, Philippe Maître, Shanshan Guan, Shanshan Guan, Benjamin J. Bythell, Benjamin J. Bythell   +6 more
openaire   +3 more sources

Dissociation Chemistry of 3-Oxetanone in the Gas Phase

The Journal of Physical Chemistry A, 2017
3-Oxetanone is a strained cyclic molecule which plays an important role in synthetic chemistry. A few studies exist in the literature about the equilibrium properties of this molecule and the dissociation patterns of substituted 3-oxetanones. For the unsubstituted 3-oxetanone, formation of ketene (CH2CO) and formaldehyde (HCHO) was considered to be the
Sumitra Godara, Pooja Verma, Manikandan Paranjothy   +2 more
openaire   +3 more sources

INVESTIGATION OF THE DISSOCIATION CHEMISTRY OF NF2 COMPOUNDS [PDF]

, 1963
Abstract : 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 ...
U. V. Henderson, P. L. Goodfriend, H. P. Woods   +2 more
openaire   +1 more source

Dissociation of the Ethyl Radical: An Exercise in Computational Chemistry

Journal of Chemical Education, 2014
A 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.
Patrick E. Fleming, Nahal Nassabeh, Mark Tran   +2 more
openaire   +2 more sources

Dissociative chemistry of ionic transition metal cluster fragments [PDF]

Journal of Cluster Science, 1991
The ionic fragments formed by collision-induced dissociation of Mn2(CO) + ions (y=1–10) are reported. The ratio of product ions formed by metal-metal vs. metal-ligand bond cleavage are discussed in terms of the dependence of the metal-metal bond energy on the ...
David H. Russell, Fred Strobel
openaire   +1 more source

Chemistry Models for Air Dissociation

1996
The 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
M. Ju. Pogosbekjan, S. A. Losev, E. A. Kovach, V. N. Makarov, A. L. Sergievskaya   +4 more
openaire   +2 more sources

Dissociative Pathways in Platinum(ll) Chemistry

Comments on Inorganic Chemistry, 1990
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
openaire   +3 more sources

Sequence Ion Structures and Dissociation Chemistry of Deprotonated Sucrose Anions

Journal of the American Society for Mass Spectrometry, 2018
We 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, Rabus, Jordan, Wagoner, Ashley, Abutokaikah, Maha, Maitre, Philippe   +4 more
openaire   +4 more sources

Theoretical investigation of the dissociation chemistry of formyl halides in the gas phase

Physical Chemistry Chemical Physics, 2020
Halogen 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
openaire   +3 more sources

The dissociation chemistry of permethylated guanosines as articulated by MS/MS

Tetrahedron Letters, 1993
Abstract 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
openaire   +2 more sources