Buscar
Mostrando ítems 11-20 de 384
Interferences and asymmetries in laser-assisted photoionization of diatomic molecules
(American Physical Society, 2014-11)
Several kinds of interference effects in laser-assisted photoionization of H2+ molecular targets are theoretically investigated by means of a Coulomb-Volkov model. The photoelectron angular distributions in the single-photon ...
From the molecule to the mole: improving heterogeneous copper catalyzed click chemistry using single molecule spectroscopy
(Royal Society of Chemistry, 2017-01)
Single molecule spectroscopy (SMS) inspired the optimization of a heterogeneous 'click' catalyst leading to enhanced yields of the Cu-catalyzed reaction of azides with terminal alkynes. Changes in SMS data after optimization ...
One-step synthesis of N, N′-substituted 4-imidazolidinones by an isocyanide-based pseudo-five-multicomponent reaction
(Royal Society of Chemistry, 2018-11-01)
A pseudo-five-multicomponent reaction involving an isocyanide, a primary amine, two molecules of formaldehyde and water is reported, which gives N,N′-substituted 4-imidazolidinones when trifluoroethanol is used as the ...
Matrix isolation of the elusive fluorocarbonylsulfenyl fluoride molecule FC(O)SF
(American Chemical Society, 2013-02-25)
The syn and anti conformers of the hitherto unknown fluorocarbonylsulphenyl fluoride, FC(O)SF, were formed through the photochemical reactions between OCS and F2 , isolated in solid Ar. The reactions were followed by FTIR ...
Selective hydrogenation of oleic acid to fatty alcohols over a Rh-Sn-B/Al2O3catalyst: Kinetics and optimal reaction conditions
(Royal Society of Chemistry, 2021-04)
The selective hydrogenation of oleic acid to oleyl alcohol over a Rh(1 wt%)-Sn(4 wt%)-B/Al2O3 catalyst was studied. A comprehensive set of experimental data was used for elucidating the reaction mechanism. In the range of ...
Fluctuations, correlations and the estimation of concentrations inside cells
(Public Library of Science, 2016-03)
Information transmission in cells occurs quite accurately even when concentration changes are "read" by individual binding sites. In this paper we study ligand number and site occupancy fluctuations when ligands diffuse ...
Quasi-Classical Trajectory Study of Atom-Diatomic Molecule Collisions in Symmetric Hyperspherical Coordinates: The F + HCl Reaction as a Test Case
(American Chemical Society, 2016-04)
We investigate the reactive dynamics of the triatomic system F + HCl → HF + Cl for total angular momentum equal zero and for different low-lying rovibrational states of the diatomic molecule. For each of the initial ...
A Minimalist Approach to the Design of Complexity-Enriched Bioactive Small Molecules: Discovery of Phenanthrenoid Mimics as Antiproliferative Agents
(Wiley VCH Verlag, 2018-08)
Over the last decades, much effort has been devoted to the design of the “ideal” library for screening, the most promising strategies being those which draw inspiration from biogenic compounds, as the aim is to add biological ...
Screening of optimal pretreatment and reaction conditions for the isomerization-cracking of long paraffins over Pt/WO3–ZrO2 catalysts
(Elsevier Science, 2010-10)
Pretreatment and reaction conditions for the isomerization-cracking of long paraffins over commercial Pt/WO3-ZrO2 catalysts were screened. Optimal conditions were seeked for the production of short, high octane branched ...
The local and observed photochemical reaction rates revisited
(Royal Society of Chemistry, 2009-06)
In a broad sense, photochemical reactions proceed through pathways involving several reaction steps. The initiation step is the absorption of energy both by the reactant or sensitizer molecules and in some cases, by the ...