20672-48-4Relevant academic research and scientific papers
Measurements of Equilibria and Reactivity of Cluster Ions at Atmospheric Pressure: Reactions of Cl(1-)(CHCl3)0-2 with CH3Br and CH3I
Giles, K.,Grimsrud, E. P.
, p. 1318 - 1323 (1993)
Measurements by the kinetic ion mobility mass spectrometer (KIMMS) of (i) equilibrium constants for the clustering reactions X(1-)(CHCl3)i-1 + CHCl3 ->/i, where X(1-) = Cl(1-) and Br(1-) and i = 1 or 2, (ii) single ion mobilities for the ions Cl(1-)(CHCl3)0-2 and Br(1-)(CHCl3)0-1, and (iii) rate constats for the SN2 nucleophilic displacement reactions of a distribution of chloride cluster ions, Cl(1-)(CHCl3)0-2, with CH3Br and with CH3I in nitrogen buffer gas at atmospheric pressure are reported.A unique feature of the present equilibrium and kinetic measurements is that they are obtained from ion mobility measurements and, therefore, are not subject to potential sources of error that can accompany mass spectrometric-based measurements involving aperture sampling of a high-pressure ion source.Another unique feature of the present investigations is that the reactivity of a selected set of cluster ions is determined under physical conditions in which the individual ions are kinetically labile with respect to cluster decomposition and growth.
HYDROGEN BONDING IN GAS-PHASE ANIONS. AN EXPERIMENTAL INVESTIGATION OF THE INTERACTION BETWEEN CHLORIDE ION AND BRONSTED ACIDS FROM ION CYCLOTRON RESONANCE CHLORIDE EXCHANGE EQUILIBRIA.
Larson,McMahon
, p. 517 - 521 (2007/10/02)
Ion cyclotron resonance chloride transfer equilibrium measurements have been used to establish an accurate scale of chloride ion binding energies for a variety of inorganic acids, carboxylic acids, alcohols, aldehydes, ketones, amines, and alkyl and aryl halides. Variation of chloride ion binding energy with gas-phase acidity reveals a far more pronounced effect of electrostatic interactions than existed for the fluoride ion. Results indicate in many cases multiple binding site interactions occur. Comparison of chloride affinities with bulk solvation abilities reveals similarities and differences between gas-phase and solution behavior that may be understood in terms of strength of interaction, molecular size, and molecular shape.
