Results 211 to 220 of about 26,347 (256)

Aromatic protonation. VIII. Equilibrium protonation of hydroxy- and alkoxybenzenes

Journal of the American Chemical Society, 1971
A. J. Kresge, H. J. Chen, L. E. Hakka, J. E. Kouba   +3 more
exaly   +2 more sources

Ionization equilibrium in the electron-proton gas

Journal of Statistical Physics, 1990
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Macris, N, Martin, A
openaire   +3 more sources

Protonation equilibrium of mesitylene in trifluoromethanesulfonic acid

Journal of the Chemical Society, Perkin Transactions 2, 1992
The protonation equilibrium of mesitylene in concentrated aqueous solutions of trifluoromethane-sulfonic acid has been studied by UV spectroscopy and the corresponding pKa value determined using the Mc procedure. The basicity of toluene and benzene in aqueous acid solutions has also been estimated by comparing detritiation rates and dissociation ...
MARZIANO N. C, TORTARO C, BERTANI, ROBERTA   +2 more
openaire   +2 more sources

Equilibrium structure of protonated cyanogen, HNCCN+

Journal of Molecular Spectroscopy, 2009
Abstract The cubic force field of protonated cyanogen, HNCCN + , has been calculated at the CCSD(T) level of theory employing correlation consistent bases of quadruple-zeta quality. Semi-experimental equilibrium structures have then been derived from the experimental ground-state rotational constants available for various isotopologues and the ...
PUZZARINI, CRISTINA, CAZZOLI, GABRIELE
openaire   +1 more source

Thermal equilibrium in proton induced reactions

Physical Review C, 1984
The thermal model, which has been applied successfully to inclusive cross sections in heavy ion reactions, is applied here to the (p,p') and (p,..pi..) reactions. The thermal source temperatures and velocities determined in proton induced reactions are similar to those found in heavy ion reactions, although the temperatures are cooler in proton induced
David H. Boal, James H. Reid
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Electrochemical reactions with protonations at equilibrium

Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1981
Abstract A theoretical analysis of the 1e, 1H+ square scheme is presented for a heterogeneous reaction with protonations occurring in solution near the electrode and assumed to be at equilibrium. It is shown that if the transfer coefficients of the electrochemical processes are both equal to 0.5, and if the diffusion coefficients for the two oxidized
openaire   +1 more source

Investigation of the equilibrium of pyridine protonization by adsorption measurements

Electrochimica Acta, 1972
Abstract The double-layer capacitance of a mercury electrode in the solutions containing pyridine at different pH was measured. From the dependence of capacitance on pH the p K of pyridine was determined. This p K obtained for different potentials of the electrode characterizes the acid-base properties of pyridine in the field of the electrode. The
Z. Galus, J. Dojlido, G. Chojnacka-Kalinowska   +2 more
openaire   +1 more source

Proton transfer complexing equilibrium in micellar solution

Colloid and Polymer Science, 1979
Proton transfer complexing equilibrium in aqueous media between p-nitrosalicylic acid and ethylenediamine has been studied in presence of CTAB, SDS, TX-100 and PEG, where CTAB and SDS have been observed to enhance the reaction whereas, TX-100 and PEG have suppressed it. Salts like KCl and NaCl have got antagonistic effects on the activities of CTAB and
S. P. Moulik, S. Ray, A. R. Das
openaire   +1 more source

Laser study of the protonation equilibrium of triplet benzophenone

Journal of the Chemical Society, Faraday Transactions 2, 1974
Transients observed in laser flash photolysis experiments on 2 × 10–4 mol dm–3 benzophenone in aqueous solution are similar to those previously reported in conventional flash experiments and assigned to the triplet B and BH+ species. Measurements of the initial intensities and lifetimes of the transients over a wide range of acidity permit pK(T1) to be
David M. Rayner, Peter A. H. Wyatt
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Some Theoretical and Computational Aspects of the Inclusion of Proton Isomerism in the Protonation Equilibrium of Proteins

The Journal of Physical Chemistry B, 2000
The present article discusses some aspects concerning the inclusion of proton isomerism in simulations of the global protonation equilibrium of protein molecules. In the context of continuum electrostatic methods, the usual basis for these simulations, this isomerism can be treated as a coexistence of tautomeric forms in equilibrium in a rigid ...
António M. Baptista, Cláudio M. Soares
openaire   +1 more source