quinone and hydroquinone species play a central role in energy transduction,by shuttling electrons between the various components of electron-transport chains.The role of hydrogen bonding in modifying the reduction potential and the reactivity of quinones has been extensively studied by using hydrogen-...
we examine hydrogen bonding in the H2S dimer, in comparison with the well-studied water dimer, in unprecedented detail. We record a mass-selected IR spectrum of the H2S dimer in superfluid helium nanodroplets. We are able to resolve a rotational substructure in...
Table 3. Intramolecular hydrogen bonding distances in Å. The packing diagram, Figure 4, shows the molecular structure of the complex. Weak intermolecular interactions favor the complex’s solubility in solvents such as CH2Cl2 or CH3CN. The voluminous character of the ligands and the high coordi...
Li B-H, Shi W-J, Ren F-D, Wang Y (2013) A B3LYP and MP2(full) theoretical investigation into the strength of the C–NO2 bond upon the formation of the intermolecular hydrogen-bonding interaction between HF and the nitro group of nitrotriazole or its methyl derivatives. J Mol Model ...
The influence of intermolecular coupling in dimers and pure crystals gives rise to new spectral features which can be assigned using the model. 展开 关键词: Hydrogen bonding Ice Molecular spectra Spectrum analysis DOI: 10.1063/1.438388 被引量: 109 ...
The glycerol incorporated in the matrix of the films was formed the intermolecular hydrogen bondings between MBS and GG. Therefore, the crystallinity of the GG/MBS film was decreased compared to the MBS and GG granules, and caused the increase in the chain mobility of MBS and GG33,34. ...
Control of Main‐Chain Stiffness of a Helical Poly(phenylacetylene) by Switching On and Off the Intramolecular Hydrogen Bonding through Macromolecular Heli... A series of novel phenylacetylenes bearing optically active cyclodextrin (CyD) residues such as alpha-, beta-, and gamma-CyD and permethylated...
However, the strong intermolecular hydrogen bonding interactions between units and its crystalline structure make the polymer insoluble in majority of conventional solvents limiting the potential applications of this abundant renewable resources10. So far, the dissolution and fabrication of cellulose materials...
Competition between intermolecular hydrogen bonding and stacking in the crystals of 4-Hydroxy-N-(pyridin-2-yl)-2,2-dioxo-1H-2λ6,1-benzothiazine-3-carboxam... The traditional crystal packing study based on the analysis of geometrical characteristics of intermolecular interactions is found to be ...
the carbonyl groups on the ketone structure after C4oxidation were shown to subsequently convert to 4-ketoaldoses (gemdiol) groups28, further enhancing the intermolecular hydrogen bonding network and, consequently, the crystallinity of the cellulose fibers (Fig.3). The likelihood that this was indee...