Water's large dipole moment leads to hydrogen bonding The H2O molecule is electrically neutral, but the positive and negative charges are not distributed uniformly. This is illustrated by the gradation in color in the schematic diagram here. The electronic (negative) charge is concentrated at the...
This presentation features recent progress in understanding the phase diagram of water and ice from the perspective of hydrogen bond (O:H–O) cooperative relaxation with focus on how the segmental length and the containing angle of the O:H–O bond change with mechanical compression and thermal ...
Ice exhibits an exceptionally richT–Pphase diagram due to the extraordinary adaptability of water’s hydrogen-bonding networks to different environmental temperatures (T) and pressures (P). To date, at least 17 crystalline ice phases (iceIh,Ic, ice II to ice XVII) have been produced in the ...
Hydrogen-bonding and intra/intermolecular vibrational coupling of water next to a hydrophobic molecule (tert-butyl alcohol, TBA) have been studied by Raman multivariate curve resolution (Raman-MCR) and isotopic dilution spectroscopy. Raman-MCR provides the vibrational spectrum of water pertinent to the...
Water, substance composed of the chemical elements hydrogen and oxygen and existing in gaseous, liquid, and solid states. It is one of the most plentiful of compounds and has the important ability to dissolve many other substances, which was essential to
Ab initio and atoms in molecules (AIM) theoretical studies have been used to show that in a 1:1 complex formed between CH 4 and H 2O, CH 4 acting as a hydrogen bond acceptor leads to the global minimum structure. There is a bond path connecting C to the H of H 2O revealing a ...
Hydrogen bonding between the water molecule and the hydroxyl radical (H2O·OH): The 2A‘ and 2A’ minima. The two degenerate components of the OH radical 2Π ground electronic state give rise to independent minima (of 2A‘ and 2A’ symmetries) upon interaction ... Kim,S Kwang,H Sik,.....
Hydrogen bonding The H2O molecule is electrically neutral, but the positive and negative charges are not distributed uniformly. This is illustrated by the gradation in color in the schematic diagram here. The electronic (negative) charge is concentrated at the oxygen end of the molecule, owing par...
Electrochemical carbon dioxide reduction (CO2R) can provide a sustainable route to produce fuels and chemicals; however, CO2R selectivity is frequently impaired by the competing hydrogen evolution reaction (HER), even for small concentrations of water. H
The hydrogen-bonding properties of water-ethanol of alcoholic beverages and water-ethanol mixtures of the corresponding ethanol contents were examined on the basis of OH proton NMR chemical shifts and the Raman OH stretching spectra of water and ethanol. Japanese shochu, an unaged distilled spirit of...