On the number of water molecules necessary to stabilize the glycine zwitterion

JH Jensen, MS Gordon - Journal of the American Chemical …, 1995 - ACS Publications
A thorough ab initio study of how the addition of successive water molecules shifts the gas
phase zwitterion—neutral equilibrium of the amino acid glycine toward that of the solution …

Monte Carlo simulations of the hydration of ammonium and carboxylate ions

WL Jorgensen, J Gao - The Journal of Physical Chemistry, 1986 - ACS Publications
Computer simulations afford a valuable means of studying complex chemical and
biochemical systems at the atomic level. Rapid progress is being made in thefield both in the …

Solvent-dependent conformational distributions of some dipeptides

V Madison, KD Kopple - Journal of the American Chemical …, 1980 - ACS Publications
CD and NMR measurements, with the aid of conformational energy calculations, have been
used to estimate the solvent-dependent conformational distributionsof AcProNHMe …

Self-consistent combination of the three-dimensional RISM theory of molecular solvation with analytical gradients and the Amsterdam density functional package

S Gusarov, T Ziegler, A Kovalenko - The Journal of Physical …, 2006 - ACS Publications
The three-dimensional reference interaction site model with the closure relation by
Kovalenko and Hirata (3D-RISM-KH) in combination with the density functional theory (DFT) …

Transition‐state optimization on free energy surface: Toward solution chemical reaction ergodography

N Okuyama‐Yoshida, M Nagaoka… - International journal of …, 1998 - Wiley Online Library
To obtain a transition state (TS) in solution chemical reaction, a new TS optimization method
has been proposed on a multidimensional free energy surface (FES). Analogous to the …

[BOOK][B] Computational aspects for large chemical systems

E Clementi - 2012 - books.google.com
1. 1 STATEMENT OF THE PROBLEM Quantum chemistry judged not from the ever present
possibility of unex pected developments but on the basis of the achievements in the last fifty …

Hydration and aggregation of a simple amino acid: The case of glycine

M Di Gioacchino, MA Ricci, S Imberti… - Journal of Molecular …, 2020 - Elsevier
Glycine is the smallest and simplest amino acid with several applications in the chemical
and pharmaceutical industries. To date, a wide conflicting literature about the hydration and …

Molecular dynamics simulation of glycine zwitterion in aqueous solution

MG Campo - The Journal of chemical physics, 2006 - pubs.aip.org
A classical molecular dynamics method was used to study the modifications of the solution
structure and the properties of glycine zwitterion in aqueous solution due to the increase of …

Origin of the transition state on the free energy surface: Intramolecular proton transfer reaction of glycine in aqueous solution

M Nagaoka, N Okuyama-Yoshida… - The Journal of Physical …, 1998 - ACS Publications
Not only to elucidate the origin of the reaction barrier in liquid phase, ie, the free energy of
activation, but also to locate the proper transition state (TS) for a chemical reaction, the …

Aminoacid zwitterions in solution: Geometric, energetic, and vibrational analysis using density functional theory-continuum model calculations

FR Tortonda, JL Pascual-Ahuir, E Silla… - The Journal of …, 1998 - pubs.aip.org
Glycine and alanine aminoacids chemistry in solution is explored using a hybrid three
parameters density functional (B3PW91) together with a continuum model. Geometries …