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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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The spectrum of a dissociation intermediate of cysteine: a biophysical chemistry experiment
Journal of Chemical Education, 1988An elegant experiment that integrates the basic concepts of physical and biological chemistry in the study of cysteine.
A. G. Splittgerber, L. L. Chinander
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Dissociative Recombination Chemistry and Plasma Dynamics
2008Abstract : Advances made in the study of the dissociation dynamics and product branching ratios of energized transient neutral molecules formed by charge-transfer (DCE) and recombination of cations with free electrons (DR) are reviewed. The results obtained include detailed measurements of the three-body dissociation of H3, O4 and sym-triazine (HCN)3 ...
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Use of hydration and dissociation chemistries with the electrolyte–NRTL model
AIChE Journal, 1999AbstractSound theoretical understanding and accurate mathematical representation of electrolyte solution nonideality were the subject of extensive research efforts for decades. It is demonstrated that these goals can be achieved by incorporation of hydration and partial dissociation chemistries with the semi‐empirical electrolyte NRTL model.
Chau‐Chyun Chen +2 more
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Dissociative chemistry of ionic transition metal cluster fragments
Journal of Cluster Science, 1991The 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 ...
F. H. Strobel, D. H. Russell
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Molecular ion collision chemistry in CH4 ionization and dissociation
International Journal of Mass Spectrometry, 2016Abstract The use of the 90° hemispheric electrostatic high resolution analyzer in conjunction with the time-of-flight (TOF) technique allowed us to identify various species associated with the ionization of methane molecular gas by a pulsed fast 19 MeV F4+ beam.
A.T. Hasan, T.J. Gray
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Excited-State Acid−Base Chemistry: Evidence for a Dissociative Excited State
Inorganic Chemistry, 2003Excitation (410 nm) of the bimetallic [(bpy)(2)Ru(CN)(mu-CN)Rh(NH(3))(4)Br](2+) produces the MLCT state localized on the (bpy)(2)Ru(CN)(2) ligand. Photoinduced cleavage of the bimetallic occurs in the presence of [H(+)], and the dependence yields a K(a) equivalent to that for ground-state cis-(bpy)(2)Ru(CN)(2) implying separation of the bimetallic ...
Jianwei, Fan +7 more
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