Results 11 to 20 of about 136,748 (262)

A model for specific interactions of manganese-phthalocyanine in protic media

open access: yesEclética Química, 2018
Extinction coefficients (e) changes of manganese phthalocyanine (Mn-Pc) were studied in different organic solvents and related to solvent polarity scales (Kosower's values (Z), Dimroth's values (ET), donor numbers (DN) and linear solvation energy ...
Nadir Ana WIEDERKEHR
doaj   +1 more source

Solvatochromism of isatin based Schiff bases: An LSER and LFER study [PDF]

open access: yesJournal of the Serbian Chemical Society, 2016
The derivatives of isatin have already been reported to show a variety of biological activities. However, there has been no report on solvatochromic effect of isatin derivatives so far, and that could be of interest to study and relate to their ...
Brkić Dominik R.   +6 more
doaj   +1 more source

Mechanisms of Sulfoxidation and Epoxidation Mediated by Iron(III)-Iodosylbenzene Adduct: Electron-Transfer vs. Oxygen-Transfer Mechanism

open access: yesMolecules, 2023
The mechanisms of sulfoxidation and epoxidation mediated by previously synthesized and characterized iron(III)-iodosylbenzene adduct, FeIII(OIPh) were investigated using para-substituted thioanisole and styrene derivatives as model substrates.
Patrik Török   +2 more
doaj   +1 more source

Aflatoxin B1–Formamidopyrimidine DNA Adducts: Relationships between Structures, Free Energies, and Melting Temperatures

open access: yesMolecules, 2019
Thermal stabilities of DNA duplexes containing Gua (g), α- (a) or β-anomer of formamidopyrimidine-N7-9-hydroxy-aflatoxin B1 (b) differ markedly (Tm: a < g < b ), but the underlying molecular origin of this experimentally observed ...
Martin Klvana, Urban Bren
doaj   +1 more source

Equilibrium constants and protonation site for N-methylbenzenesulfonamides

open access: yesBeilstein Journal of Organic Chemistry, 2011
The protonation equilibria of four substituted N-methylbenzenesulfonamides, X-MBS: X = 4-MeO (3a), 4-Me (3b), 4-Cl (3c) and 4-NO2 (3d), in aqueous sulfuric acid were studied at 25 °C by UV–vis spectroscopy.
José A. Moreira   +3 more
doaj   +1 more source

Determining the orientation of protegrin-1 in DLPC bilayers using an implicit solvent-membrane model. [PDF]

open access: yesPLoS ONE, 2009
Continuum models that describe the effects of solvent and biological membrane molecules on the structure and behavior of antimicrobial peptides, holds a promise to improve our understanding of the mechanisms of antimicrobial action of these peptides.
Abdallah Sayyed-Ahmad   +1 more
doaj   +1 more source

Linear free energy relationships in halogen bonds [PDF]

open access: yesCrystEngComm, 2013
Four models of halogen bonds were used to quantify this bond using the DFT B97D/6-311+G(d) computational level: para-substituted iodobenzenes, para- and meta-substituted bromobenzenes complexed with three simple Lewis bases (NH 3, NCH and CNH), 1-bromo-4-substituted-bicyclo[2.2.2]octanes with NH3 and 3- and 4-substituted pyridines complexed with BrCl ...
Alkorta, I.   +2 more
openaire   +2 more sources

Linear Free Energy Relationships in Glass Corrosion [PDF]

open access: yesMRS Proceedings, 1988
AbstractVarious theoretical models that have been proposed to correlate glass durability to their composition for a wide variety of silicate, borosilicate, and aluminosilicate glasses are examined. Comparisons are made between the predictions of these models and those of an empirical formulation extracted from existing data in the present work.
Abrajano, T. A., Jr.   +2 more
openaire   +1 more source

Molecular Binding Interactions: Their Estimation and Rationalization in QSARs in Terms of Theoretically Derived Parameters

open access: yesThe Scientific World Journal, 2002
An extensive survey of molecular binding interactions and parameters used in QSARs is reported, which includes consideration of lipophilicity and the derivation of Linear Free Energy Relationships associated with drug-receptor binding, together with an ...
David F.V. Lewis, Howard B. Broughton
doaj   +1 more source

On the mechanism of action of gated molecular baskets: The synchronicity of the revolving motion of gates and in/out trafficking of guests

open access: yesBeilstein Journal of Organic Chemistry, 2012
We used dynamic 1H NMR spectroscopic methods to examine the kinetics and thermodynamics of CH3CCl3 (2) entering and leaving the gated molecular basket 1.
Keith Hermann   +5 more
doaj   +1 more source

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