Results 61 to 70 of about 512 (161)

Prediction of Hydrogen-Bonding Interaction Free Energies with Two New Molecular Descriptors

open access: yesLiquids
This work is a continuation of our recent work on the prediction of hydrogen-bonding (HB) interaction enthalpies. In the present work, a simple method is proposed for the prediction of the HB interaction free energies.
William E. Acree, Costas Panayiotou
doaj   +1 more source

Study of tautomerism and solvatochromism of 5-(substituted phenylazo)-3-cyano-6-hydroxy-4-methyl-2-pyridones

open access: yesZaštita Materijala
In this study, ten 5-(substituted phenylazo)-3-cyano-6-hydroxy-4-methyl-2-pyridone dyes were synthesized, differing in both the position and the nature of substituents on the phenyl ring.
Jelena Lađarević   +6 more
doaj   +1 more source

Extracion of citric acid in 2-octanol and 2-propanol solutions containing tomac: an equilibria and a LSER model [PDF]

open access: yesBrazilian Journal of Chemical Engineering, 2008
Studies on the extraction of citric acid by TOMAC (trioctyl methyl ammonium chloride) dissolved in 2-propanol and 2-octanol (active solvents) and their mixture (1 : 1 volume ratio) are reported. Experimental results of batch extraction experiments are calculated and reported for partitioning coefficients (D), loading factors (Z), and extraction ...
openaire   +3 more sources

SOLVENT EFFECT ON THE PHOTOOXIDATION OF AMODIAQUINE WITH SINGLET MOLECULAR OXYGEN

open access: yesVitae, 2009
The use of Amodiaquine (AQ) in the treatment and prevention of the malaria, cause adverse effects in tissue exposed to the light; previous investigations relate these nocive effects to the capacity of this drug to generate active species of oxygen as ...
Adriana M. SOTO Z.   +2 more
doaj  

Solvent effects on the structure-property relationship of anticonvulsant hydantoin derivatives: A solvatochromic analysis

open access: yesChemistry Central Journal, 2011
Considering the pharmaceutical importance of hydantoins, a set of 25 derivatives of phenytoin, nirvanol and 5-methyl-5-phenylhydantoin, the lipophilicities of which were gradually increased by the introduction of different alkyl, cycloalkyl and alkenyl ...
Trišović Nemanja   +2 more
doaj   +1 more source

Chromo- and fluorophoric water-soluble polymers and silica particles by nucleophilic substitution reaction of poly(vinyl amine)

open access: yesBeilstein Journal of Organic Chemistry, 2010
Novel chromophoric and fluorescent carbonitrile-functionalized poly(vinyl amine) (PVAm) and PVAm/silica particles were synthesized by means of nucleophilic aromatic substitution of 8-oxo-8H-acenaphtho[1,2-b]pyrrol-9-carbonitrile (1) with PVAm in water ...
Katja Hofmann   +3 more
doaj   +1 more source

A Study on Retention of a Series of Aromatic Compounds in Mixed Micellar Liquid Chromatography Using Linear Solvation Energy Relationship (LSER) [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2006
The effect of SDS (0.03-0.07 M) and Brij-35(0-0.003 M) concentrations and temperature on retention parameters of 30 solutes in micellar reversed- phase liquid chromatography systems were studied using solvation parameter model.
Mohammad Reza Hadjmohammadi   +1 more
doaj  

EFECTO DEL SOLVENTE EN LA FOTOOXIDACIÓN DE LA AMODIAQUINA CON OXÍGENO MOLECULAR SINGULETE SOLVENT EFFECT ON THE PHOTOOXIDATION OF AMODIAQUINE WITH SINGLET MOLECULAR OXYGEN

open access: yesVitae, 2007
El uso de amodiaquina (AQ) en el tratamiento y prevención de la malaria causa efectos secundarios adversos en tejidos expuestos a la luz; investigaciones previas relacionan esto con la capacidad fotosensibilizadora de este medicamento para generar ...
Adriana M. SOTO Z.   +2 more
doaj  

Solvent effect on electronic absorption spectra of some N-aryl substituted dodekanamides

open access: yesMacedonian Journal of Chemistry and Chemical Engineering, 2006
A series of N-aryl substituted dodekanamides were synthesized using the reaction of fatty acid chloride (lauroylchloride) with p-substituted aromatic amines in the presence of triethylamine as an organic base and dioxane as a solvent. The structures of N-
Viktorija Stamatovska   +2 more
doaj  

Synthesis, solvatochromism, electronic structure and nonlinear optic properties of quinolin-8-yl 2-hydroxybenzoate

open access: yesMacedonian Journal of Chemistry and Chemical Engineering, 2018
Quinolin-8-yl-2-hydroxybenzoate (abbreviated as QHB) was synthesized and investigated both experimentally and theoretically to obtain its physical and electronic properties.
Ayşegül Gümüş   +3 more
doaj   +1 more source

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