Theoretical pKa calculations with continuum model solvents, alternative protocols to thermodynamic cycles

R Casasnovas, J Ortega‐Castro, J Frau… - … Journal of Quantum …, 2014 - Wiley Online Library
This article reviews different formulations of the thermodynamic cycles used for the
prediction of pKa values, their advantages, and disadvantages with special emphasis on the …

Empirically Fitted Parameters for Calculating pKa Values with Small Deviations from Experiments Using a Simple Computational Strategy

A Galano, A Pérez-González… - Journal of Chemical …, 2016 - ACS Publications
Two empirically fitted parameters have been derived for 74 levels of theory. They allow fast
and reliable p K a calculations using only the Gibbs energy difference between an acid and …

Critical evaluation of implicit solvent models for predicting aqueous oxidation potentials of neutral organic compounds

JJ Guerard, JS Arey - Journal of chemical theory and computation, 2013 - ACS Publications
Quantum chemical implicit solvent models are used widely to estimate aqueous redox
potentials. We compared the accuracy of several popular implicit solvent models (SM8 …

Modern methods for estimation of ionization constants of organic compounds in solution

YE Zevatskii, DV Samoilov - Russian Journal of Organic Chemistry, 2011 - Springer
The review considers main up-to-date approaches to the calculation of ionization constants
of organic compounds in solutions. Methods based on quantum-chemical calculations …

Quantum chemical benchmarking, validation, and prediction of acidity constants for substituted pyridinium ions and pyridinyl radicals

JA Keith, EA Carter - Journal of chemical theory and computation, 2012 - ACS Publications
Sensibly modeling (photo) electrocatalytic reactions involving proton and electron transfer
with computational quantum chemistry requires accurate descriptions of protonated …

Calculations of pKa Values of Selected Pyridinium and Its N-Oxide Ions in Water and Acetonitrile

P Mech, M Bogunia, A Nowacki… - The Journal of Physical …, 2019 - ACS Publications
Pyridine, its N-oxide, and their derivatives are exciting classes of organic bases. These
compounds show widespread biological activity, and they are often used in synthesis. In this …

Molecular Mechanism of NDMA Formation from N,N-Dimethylsulfamide During Ozonation: Quantum Chemical Insights into a Bromide-Catalyzed Pathway

D Trogolo, BK Mishra, MB Heeb… - … science & technology, 2015 - ACS Publications
During ozonation of drinking water, the fungicide metabolite N, N-dimethylsulfamide (DMS)
can be transformed into a highly toxic product, N-nitrosodimethylamine (NDMA). We used …

A reliable and efficient first principles‐based method for predicting pKa values. 4. organic bases

S Zhang - Journal of Computational Chemistry, 2012 - Wiley Online Library
The ionization (dissociation) constant (pKa) is one of the most important properties of a drug
molecule. It is reported that almost 68% of ionized drugs are weak bases. To be able to …

Absolute pKa Values and Solvation Structure of Amino Acids from Density Functional Based Molecular Dynamics Simulation

M Mangold, L Rolland, F Costanzo… - Journal of chemical …, 2011 - ACS Publications
Absolute p K a values of the amino acid side chains of arginine, aspartate, cysteine,
histidine, and tyrosine; the C-and N-terminal group of tyrosine; and the tryptophan radical …

Isodesmic reaction for pK a calculations of common organic molecules

S Sastre, R Casasnovas, F Munoz, J Frau - 8th Congress on Electronic …, 2014 - Springer
Three quantum chemistry methods (B3LYP, M05-2X and CBS-4B3*) have been used, in
combination with SMD and CPCM continuum solvent models, to calculate the aqueous pK a …