On the basis of the idea that hydrogen bonds consist of two types of bonds, the stronger O–H and weaker HO bonds are, for the first time, considered to have different bond-valence parameters d 0 S and d 0 W, respectively. According to the electrostatic equilibrium distribution of the ...
Rliey K E. Ab initio studies of the characteristics of hydrogen bonds involing aromatically bound hydroxyl and amino groups[J], Int. J. Quantum Chem., 2010,110:1833.Rliey K E.Ab initio studies of the characteristics of hydrogen bonds involing aromatically bound hydroxyl and amino groups....
Experimental/ hydrogen bondsiceliquid structuremolecular configurationsneutron diffractionwater/ structural characteristicsH-bonded networkswatericemolecular configurationsThe molecular configurations of water molecules in the disordered condensed state are investigated by neutron diffraction. The results provide evidence...
Their vibrational frequencies are calculated and the properties of hydrogen bond (H-bond) are analyzed. The structure of a water cluster is decided by the number and the strength of the H-bonds formed in the cluster. The H-bonds in the hexagonal rings are strongest but the clusters building...
The temperature dependence of constants of the equilibrium monomer – complex is examined, and thermodynamic characteristics of the complexes are calculated..Experimental/ chemical equilibriumenthalpyhydrogen bondsinfrared spectraorganic compoundsvibrational states/ hydrogen-bond complexes...
In Section 4.1 “Covalent Bonds”, we stated that the covalent bond in the hydrogen molecule (H2) has a certain length (about 7.4 × 10−11 m). Other covalent bonds also have known bond lengths, which are dependent on both the identities of the atoms in the bond and whether the bon...
In addition, the triple helix conformation in the structure of the collagen coating could be stabilized by the water molecules25. Water treatment effectively converted the triple helix into a highly hydrated state which stabilized the collagen structure with the formation of hydrogen bonds28. The ...
12. Previous investigations have indicated that biochar could be potentially applied for the sorption of antibiotics from waste water by the combination of multiple mechanisms (e.g. electrostatic attraction, π–π electron-donor–acceptor interaction and hydrogen bond (H-bond) and hydrophobic ...
Some of the muscle water is strongly bound to proteins by hydrogen bonds. This water fraction has been defined as the bound water and it is strongly resistant to freezing, being not easily freezable at temperatures even below −40 °C (Aktas, Tulek, & Gokalp, 1997). The bulk water is ...
Accordingly, the presence of K+ ions that can reduce the strength of hydrogen bonds must result in lowering the pyrolysis temperature. The improved volatile yields (less char yield) for biomass pyrolysis under H2 are ascribed to the fact that hydrogen and potassium catalyst could mediate ...