Theoretical study of carboxylic acids with explicit water molecules

2006 ◽  
Vol 763 (1-3) ◽  
pp. 199-204 ◽  
Author(s):  
Krum Chuchev ◽  
Joseph J. BelBruno
Keyword(s):  
Carboxylic Acids ◽  
Theoretical Study ◽  
Water Molecules ◽  
Explicit Water

Defects controlled by acid-modulators and water molecules enabled UiO-67 for exceptional toluene uptakes: An experimental and theoretical study

2021 ◽  
pp. 131573
Author(s):  
Xiaodong Zhang ◽  
Xiaoyu Shi ◽  
Qiangyu Zhao ◽  
Yintao Li ◽  
Jinfeng Wang ◽  
...  
Keyword(s):  
Theoretical Study ◽  
Water Molecules

Theoretical study of the magnetic properties of water molecules in non-uniform magnetic fields

1994 ◽  
Vol 305 ◽  
pp. 89-99 ◽  
Author(s):  
M.C. Caputo ◽  
M.B. Ferraro ◽  
P. Lazzeretti ◽  
M. Malagoli ◽  
R. Zanasi
Keyword(s):  
Magnetic Properties ◽  
Magnetic Fields ◽  
Theoretical Study ◽  
Water Molecules

An efficient and robust procedure to calculate absorption spectra of aqueous charged species applied to NO2-

2021 ◽  
Author(s):  
Lina Uribe ◽  
Sara Gómez ◽  
Tommaso Giovannini ◽  
Franco Egidi ◽  
Albeiro Restrepo
Keyword(s):  
Potential Energy ◽  
Absorption Spectra ◽  
Potential Energy Surfaces ◽  
Quantum Potential ◽  
Water Molecules ◽  
Accurate Calculation ◽  
Charged Species ◽  
Energy Surfaces ◽  
Explicit Water

Accurate calculation of absorption spectra of aqueous NO2- requires rigorously sampling the quantum potential energy surfaces for microsolvation of NO2- with at least five explicit water molecules and embedding the...

scholarly journals Theoretical Study of HOCl-Catalyzed Keto–Enol Tautomerization of β-Cyclopentanedione in an Explicit Water Environment

2013 ◽  
Vol 117 (35) ◽  
pp. 8437-8448 ◽  
Author(s):  
Cassian D’Cunha ◽  
Alexander N. Morozov ◽  
David C. Chatfield
Keyword(s):  
Theoretical Study ◽  
Water Environment ◽  
Explicit Water

Dissociation of H2O molecule adsorbed on Si (001) 2×1 surface: a theoretical study

2008 ◽  
Vol 1145 ◽  
Author(s):  
Hyun-Chul Oh ◽  
Hwa-Il Seo ◽  
Yeong-Cheol Kim
Keyword(s):  
Water Molecule ◽  
Room Temperature ◽  
Surface Coverage ◽  
Theoretical Study ◽  
Surface Model ◽  
Water Molecules ◽  
First Principles Calculations ◽  
Adsorption Sites ◽  
Adsorption Surface ◽  
Adsorption And Dissociation

AbstractThe adsorption and dissociation behavior of water molecule below and above the critical dissociation temperatures were studied by first principles calculations. We found that water-molecule adsorption (surface coverage, θ=0.25) on the down Si atom of a Si dimer in two dimers surface model was 0.26 eV more favorable than that on the up Si atom. The activation energies of water molecule on the down Si atom for interdimer and intradimer dissociations were 0.17 eV and 0.20 eV, respectively. Due to the lower activation energy, the water molecule splits into H and OH immediately once it adsorbs on down Si atom of the Si (001) surface at room temperature. There were three different adsorption sites among four sites of the two dimers for the second water molecule (θ=0.5): one was preoccupied by OH of the first water molecule; up Si atom of the same-dimer with 76.3 % probability, up Si atom of the adjacent-dimer with 23.6 % probability, and down Si atom of the adjacent-dimer with 0.1 % probability. Thus, ½ monolayer of OH sites on the Si (001) surface are irregularly distributed when water molecules are adsorbed and dissociated at room temperature.

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