Ah initio calculations are presented for the hydration eneeJ\* of the positron. Tetrahedral molecular-dipole-oriented clusters e+(H,O), are considered. In performing these calculations, the Hartree-Fock MO LCAO SCF approximation \\ith the 4-31G split-valence basis set is used. The method \kas modifi
The effect of hydration on the molecular charge distribution of cations. An ab initio SCRF study
โ Scribed by F.J. Luque; S.R. Gadre; P.K. Bhadane; Modesto Orozco
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 660 KB
- Volume
- 232
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
A theoretical study of the changes in the charge distribution of a series of small cations due to the polarization effect of water is presented. The results, which are obtained from high-level ab initio self-consistent reaction field calculations, show the complexity of the solvent effect on the electron distribution of cations. The polarization effect of water on the charge redistribution for cations is smaller than that for anions and neutral molecules, but it is still significant for some systems.
๐ SIMILAR VOLUMES
Ab initio LCGO calculations on [Li...OHz ]+ and [Be...OHa ] \*+ are presented. 'Ike hydration energies for the fist water molecule arecalculated to 43.6 resp. 141 kcal/mole. At the energy minima the foiIawing metal oxygen distances were obtaiqed: RciO = 1.83 i$ and RB.& = 1.56 A. In both cases the m
Ab initio calculations using the STO-3G, 6-31G, and 6-31G \* \* basis sets are used to investigate charge distribution in tetracyclododecane alcohols. The calculated net atomic charges using fully optimized geometries indicate that certain carbon and hydrogen atoms in the proximity of a nonbonding o
Ab initio calculations using fully optimized geometries are used to generalize hyperconjugation effects in a representative series of eight polycyclic alcohols. The systems studied include tetra-, penta-and hexa-cyclic structures with varying degrees of tension, due to compression and stretching of
## ST0 3G SCF computations are used to determine the most favorable sites of water fixation and the lability of the bindin on the dimethyiphosphata anidn. A newly circuhr region of attraction fo7 water'surrounds ach of the anionic oxygens and a number of other possible hydr-tion sites ye found wit