The hydrogen-bonding structure in shochu containing some acids was found to be different from that of the water-ethanol mixture with corresponding ethanol content. It was concluded that, by the presence of small amounts of organic acids, the water-ethanol hydrogen-bonding structure was strengthened...
美 英 un.氢键合 英汉 网络释义 un. 1. 氢键合 例句 释义: 全部,氢键合
The hydrogen-bonding interaction between the pairs of molecules examined was found to correspond to 20–30kJmol1. 展开 关键词: crystal structure hydrogen bonding polymeric hydrogen-bonded systems 4-nitrobenzene-1,2-diamine hydrogen halide salt density functional theory MP2 method computational chemistry ...
A consequence of hydrogen bonding is that hydrogen bonds tend to arrange in a tetrahedron around each water molecule, leading to the well-known crystal structure of snowflakes. In liquid water, the distance between adjacent molecules is larger and the energy of the molecules is high enough that ...
An analysis of the hydrogen bond in BASE-HF complexes using the theory of atoms in molecules The nature, energetics and mechanism of BASE-HF hydrogen bonding (where BASE = OC, SC, N2, HCN, H3N, O3, SCO, CO2, N2O, SO2, H2CO, H2O, HF, H3P, H2S and HC... MT Carroll,RFW Bader...
Although several names and acronyms to describe PMCs constructed through H-bonding can be found in the literature, the name HOF is applied in the later part of this review article. Typical features of HOFs, compared with other porous materials such as MOFs and COFs, are as follows [37,38,...
Hydrogen bonding is the attractive interaction that occurs between a hydrogen atom bound in a molecule to an electronegative atom such as oxygen or nitrogen and another electronegative atom from a different molecule (intermolecular) or even from the same molecule (intramolecular). ...
The use of diffusion data to determine the relative strength of hydrogen bonding and the number of solvent molecules associated with a pseudo-planar solute is demonstrated; the solvation numbers are found to be approximately equal for solutes containing the same polar group in ethanol at 298.2 K....
In benzene (inert) the hydroxyl groups are mostly free (the weak sideband indicates a small amount of OH to OH bonding) but are almost entirely H-bonded to either tetrahydrofuran, pyridine or triethylamine. The shift Δν(A–H) is proportional to solvent pKa, the values being -2.1, 5.2 ...
A highly cooperative hydrogen bonding interaction was found in the paired cellulose chains, particularly between the inter-chain and intra-chain hydrogen bonds. An enhancement in hydrogen bonding strength was also observed when infinite cellulose chains were paired to form cellulose sheets, and when ...