Carboxylic acids act as both hydrogen bond acceptors and donors. Due to the presence of the carbonyl group, it acts as a hydrogen bond acceptor. The presence of the hydroxyl group makes it hydrogen bond donors. This helps them to participate in hydrogen bonding. Carboxylic acids usually exist ...
The former interaction energies were always significantly weaker than the latter energies, when the same geometries of the H‐bond donors and acceptors were applied. The chemical origin of this phenomenon was investigated by analyzing the differences among the electronic structures of the local peptide...
Abraham and co-workers found that data measured against different hydrogen bond acceptors/donors could be combined to give general hydrogen bonding scales for donors and acceptors, respectively, the α and β scales.66 The applicability of these descriptors has been enhanced by an empirical ...
Deuterium Exchange as an Indicator of Hydrogen Bond Donors and Acceptors Hydrogendeuterium exchange has been used to determine the hydrogen bonding preferences of a select group of small peptides in organic solvents. This kineti... LR Steffel,TJ Cashman,MH Reutershan,... - 《Journal of the Ame...
addition to or instead of providing a definition for hydrogen bond, including the books by Pimentel and McClellan 3 and Scheiner 11 . Section 2 discusses several aspects of hydrogen bonding such as the nature of physical forces involved, various hydrogen bond donors and acceptors, distance and en...
Which of the following compounds can participate in hydrogen bonding with water? State which compounds can act only as hydrogen-bond donors, which can act only as hydrogen-bond acceptors, and which can act as both hydrogen-bond donors and hydrogen-bond ac ...
Other weak hydrogen bonds can be established with aromatic groups (e.g. indole) acting as donors or acceptors [38, 39]. When the electronegative atoms D and A become closer, the barrier for transfer of the H atom between D and A is lowered. It can eventually become low enough so that...
donors [38]. The experimental values for donors ranged from − 10 to + 8 kJ mol−1. These distributions and calibration results were compiled for display in Fig.2. For both donors and acceptors, the computed Gibbs free energies in solution were systematically off. This was ...
volving riboflavine Donors and acceptors of hydrogen in oxidation-reduction reactions involving riboflavineDonors and acceptors of hydrogen in oxidation-reduction reactions involving riboflavineKolesnikov, P A
Recently, we defined 'hydrogen-bond radii' for various hydrogen-bond donors, DH where D = F, Cl, Br, CN, HO or CCH from an empirical analysis. It was shown that the AH distances in BHD complexes could be written as a sum of hydrogen bond radius for DH and a constant acceptor radius...