The variation of the C−D vibrational stretching frequency in primary and secondary alcohols containing the D−C−O−H functionality has been examined for cases in which the alcohol functions as a proton donor in an H-bond. The C−D stretching frequency is a function of the H-bond ...
What is the bonding capacity of hydrogen?Bonding Capacity:Bonding capacity refers to the number of chemical bonds that can be on an atom of a chemical element. Elements with a large bonding capacity are capable of forming multiple bonds.
Discusses the variation of the C-D vibrational stretching frequency in primary and secondary alcohols containing the D-C-O-H functionality. Function of H-bond enthalpy of formation; Increase in the overlap of O-H bonding electrons with the C-D antibonding orbital; Model nucleoside complexed with...
Teaching hydrogen bridges (H-bridges) in introductory chemistry courses is either oversimplified or dogmatically taught; the heuristic that ‘only fluorine, oxygen and nitrogen (FON) form H-bridges’ is commonly used, for example. This rule limits choices, does not match reality, and does not cl...
See also: covalent binding; equilibrium dialysis; hydrogen bonding; hydrophilic binding; ligand; protein binding; radioreceptor assays; van der Waals’ forces. binding, covalent See: covalent binding. binding, to cellular macromolecules The binding of xenobiotics to cellular macromolecules is of ...
in the structure of [Cu(H2O)]+is a uniquely active site for adsorbing different molecules. To our knowledge, it could be speculated as the following reasons. As H2O was bound to Cu+, the resulting [Cu(H2O)]+more likely tended to form hydrogen bond62,63,64,65,66or OH-π interactions...
Moreover, unsaturation in the sphingoid backbone augments intramolecular hydration/hydrogen bonding in the polar region. This may allow the close packing of the ceramide molecules, which exhibit a tighter intramolecular interaction than comparable lipids [8–10]. This higher packing density of ceramides...
resonances from (the hydrate, 9) C3 are absent, because the proton that attaches to C3 in initial enolate for- mation is now a deuterium, plus, the enolate hydrogen is replaced by a deuterium as well (Fig. 5b). These observations are confirmed by electrospray ionisation mass spectrometry (...
2, inset), can at least partly be related to different hydrogen bonding or electrostatic interactions with the counter ion (21). For the Rh-UV state, however, there is no indication for structural heterogeneity of the chromophore (Fig. 2B). The C = C stretching mode at 1566 cm−1 ...
Which functional group is found in the organic compound CH3CH2COCH2CH3? a. aldehyde b. alcohol c. ketone d. amine Name the following compound. Cyclohexene with bromine atom and methyl group substituted for two hydrogens. Cinnamaldehyde reacts with liquid bromine. ...