Results 161 to 170 of about 5,893 (200)
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Rationalizing hydrogen bond solvation with Kamlet–Taft LSER and molecular torsion balances
Physical Chemistry Chemical Physics, 2023The Kamlet–Taft solvation model partitioned experimental solvent effects on intramolecular hydrogen bonding into electrostatic and dispersion terms, revealing their relative contributions to the folding preference of a molecular torsion balance.
Bright U. Emenike +3 more
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LSER in the allylation of morpholine
Reaction Kinetics and Catalysis Letters, 2009The second order rate constants of allylation of morpholine are obtained conductometrically in different protic and aprotic solvents in the temperature range 303–318K. Correlation of the rate data with different solvent parameters indicates that, the reaction rate is simultaneously influenced by the hydrogen bond donor ability (α), nucelophilicity (B ...
Thangallapally Devender +1 more
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New method to determine LSER parameters
Chromatographia, 2003New method was developed to determining ∑β 2 H andπ 2 H descriptors of the linear solvation energy relationship (LSER) with micelle-water partition coefficient obtained using micellar liquid chromatography (MLC ...
F. Mutelet +2 more
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Predicting dermal permeability of biocides in commercial cutting fluids using a LSER approach
Toxicology Letters, 2007The aim of this study is to predict dermal permeability of four phenolic biocides in four different formulations using a linear solvation energy relationship (LSER) approach, with a calibrated flow through diffusion cell system. Mathematical descriptors were determined in the laboratory, by mathematical computations, and by statistical methods ...
Vikrant Vijay +2 more
exaly +3 more sources
Characterization of Sorption Mechanisms of VOCs with Organobentonites Using a LSER Approach
Environmental Science & Technology, 2003To fully utilize the sorption traits of organobentonites to control volatile organic compounds (VOCs) pollution, the sorption mechanisms of VOCs with organobentonites need to be understood adequately. The sorption of VOCs as vapors to a typical organobentonite, modified with cetyltrimethylammonium bromide (CTMAB-bentonite), was characterized using a ...
Senlin, Tian, Lizhong, Zhu, Yao, Shi
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Separation Science and Technology, 2008
Abstract Levulinic acid, a carboxylic acid containing ketone structure, is a clear to brownish semi‐solid melting at 37°C; soluble in alcohol, ether, and chloroform, levulinic acid can be used as an acidulant in foods and beverages. Organic solutions of amines are being used increasingly to separate organic acids from aqueous mixture solutions by ...
Hasan Uslu
exaly +3 more sources
Abstract Levulinic acid, a carboxylic acid containing ketone structure, is a clear to brownish semi‐solid melting at 37°C; soluble in alcohol, ether, and chloroform, levulinic acid can be used as an acidulant in foods and beverages. Organic solutions of amines are being used increasingly to separate organic acids from aqueous mixture solutions by ...
Hasan Uslu
exaly +3 more sources
Characterization of the GEMINI C18™ Column: Lipophilicity Measurement and LSER
Journal of Liquid Chromatography and Related Technologies, 2008Abstract We describe here the use of Gemini C18™ column, a new generation hybrid silica based column, for reversed-phase liquid chromatographic determination of lipophilicity parameters of several structurally different xenobiotics (neutral solutes and ionized drugs). Among the parameters discussed, we show that extrapolated retention factor values log
Deborah Benhaim, Eli Grushka
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Journal of Colloid and Interface Science, 2015
The compound-specific mechanisms for the sorption of organic contaminants onto cetyltrimethylammonium-saturated bentonite (i.e., CTMA-Bentonite) in water were evaluated by (1)H NMR study and Linear Solvation Energy Relationship (LSER) approach. In (1)H NMR study, comparing with pure CTMAB, the up-field shifts of hydrogen peaks for CH2N(+) and CH3N ...
Lizhong Zhu +2 more
exaly +4 more sources
The compound-specific mechanisms for the sorption of organic contaminants onto cetyltrimethylammonium-saturated bentonite (i.e., CTMA-Bentonite) in water were evaluated by (1)H NMR study and Linear Solvation Energy Relationship (LSER) approach. In (1)H NMR study, comparing with pure CTMAB, the up-field shifts of hydrogen peaks for CH2N(+) and CH3N ...
Lizhong Zhu +2 more
exaly +4 more sources
Partial solvation parameters and LSER molecular descriptors
The Journal of Chemical Thermodynamics, 2012Abstract The partial solvation parameters (PSP) have been defined recently, on the basis of the insight derived from modern quantum chemical calculations, in an effort to overcome some of the inherent restrictions of the original definition of solubility parameter and expand its range of applications.
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Experimental Determination of LSER Parameters for a Set of 76 Diverse Pesticides and Pharmaceuticals
Environmental Science & Technology, 2008Linear solvation energy relationships (LSERs) have more recently been proposed as the method of choice to describe and/or predict the partitioning behavior of neutral organic compounds over a large range of environmental matrices and for a broad variety of compounds in a consistent manner.
Holger C, Tülp +3 more
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