Equivalence of NH4+, NH2NH3+, and OHNH3+ in Directing the Noncentrosymmetric Diamondoid Network of OH···O- Hydrogen Bonds in Dihydrogen Cyclohexane Tric... The weak hydrogen bond in structural chemistry and biology; New York: Oxford University Press Inc. 1999.Equivalence of NH 4+ ,NH 2...
I propose that weak chemical bonds be systematically treated as chemical structural determinants. Two important consequences follow. First, the molecule is no longer the unit of chemical structure in biological systems; in its place we obtain a large complex unit whose boundaries at any given ...
We describe the many X–H···Y interactions, called weak hydrogen bonds, that involve less electronegative atoms (X or Y), including the X–H···M variety (M is a transition metal), up to the unconventional dihydrogen bond X–H···H B, where the second hydrogen is a hydride. ...
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It would, therefore, appear mobile, with its diffusion coefficient reduced by the fraction of the time it spent in the bound state (Elson and Reidler, 1979). A realistic analysis would allow for independent formation and breakage of bonds within the contact region. If there is a probability ...
Danielle has taught middle school science and has a doctorate degree in Environmental Health Did you know household ammonia, which is used as a cleaning product, can be classified as a weak base? Continue reading to learn about weak bases and discover more examples of these type of chemical su...
Reactions that convert carbon hydrogen (C-H) bonds into carbon-carbon (C-C) or carbon heteroatom (C-Y) bonds are attractive tools for organic chemists, potentially expediting the synthesis of target molecules through new disconnections in retrosynthetic analysis. Despite extensive inorganic and organo...
A weak acid is anacidthat partiallydissociatesinto its ions in anaqueous solutionor water. In contrast, astrong acidfully dissociates into its ions in water. The conjugate base of a weak acid is a weak base, while the conjugate acid of a weak base is a weak acid. At the same concentr...
enclathrated within intermolecular cavities. Careful analysis of intermolecular contacts showed that weak aromatic edge-to-face (C–H···Fπ) interactions occur between pyridine and host molecules. The crystal packing appeared to be also stabilized by the host–host C–H···O hydrogen bonds. ...
conditions. We demonstrate by increasing ionic strength the role displayed by electrostatic interactions in the phase separation. We also show the importance of hydrogen bonds in this process. Finally, we discuss the importance of gliadins condensates in their accumulation and storage in the wheat ...