Role of the solvent in the adsorption-desorption equilibrium of cinchona alkaloids between solution and a platinum surface: Correlations among solvent polarity, cinchona solubility, and catalytic performance

Article Abstract:

A study of the role that the nature of the solvent plays in defining the extent of cinchona alkaloids adsorption-desorption equilibrium on platinum surfaces is presented by testing their solubility in 54 different solvents and by probing the stability of adsorbed cinchona in the presence of those solvents. The adsorption-desorption equilibrium shifts toward the solution with increasing dissolving power of the solvent.

Methods, Catalysis, Chemical properties, Alkaloids, Cinchona

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Structure and hydrogen bonding in neat N-methylacetamide: Classical molecular dynamics and Raman spectroscopy studies of a liquid of peptidic fragments

Article Abstract:

The results of classical molecular dynamics (MD) simulations and Raman spectroscopy studies of neat liquid N-methylacetamide (NMA), the simplest model system relevant to the peptides, are reported as a function of temperature and pressure. The MD simulations predict that near ambient conditions, the molecules form a hydrogen bond network consisting primarily of linear chains.

Usage, Hydrogen bonding, Hydrogen bonds, Raman spectroscopy

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Thermal chemistry of iodomethane on Ni(110).1. clean and hydrogen-predosed surfaces

Article Abstract:

The thermal chemistry of iodomethane on Ni(110) single-crystal surfaces is studied. It is shown that the hydrogenation step of methyl methane is controlled by the population of surface hydrogen.

Observations, Nickel, Thermal properties, Hydrogenation

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