The main intermolecular interactions are the π–π between the pyridine and the fluorinated ring of molecules stacking in columns (1a with 1a and 1b with 1b) and the O–HN H-bonds. The imine acts as a H-bond-donor to the water molecules and a H-bond-acceptor of the water molecule'...
Hydrogen bonding is a vital feature of proteins and is necessary for maintaining: [1–4] Structure. Folding status. Stability. Selectivity and affinity towards ligands. Proteins contain many hydrogen bond donors and acceptors, including amide (-NH) donors and carbonyl (-CO) acceptors along the pe...
A hypothesis is postulated that high content of hydrogen donors and acceptors, and basic amino acids cause the intracellular trapping of the H+ and Cl− ions, which increases cancer risks as local formation of HCl is mutagenic to DNA. Other cations such as Ca2+, and weak acids such as sh...
5.The molecule has to have certain properties, like a number of hydrogen bond donors and acceptors. 6.Additionally, five mutations in the central helical region, N764K, D796Y, N856K, L981F, and N969K introduce and facilitate additional hydrogen bond and hydrophobic interactions between the S2...
The material contains 4-phenol oxygen-1, 8-naphthalimide or 4-(tert-butyl-substituted phenol oxygen)-1, 8-blue fluorescent naphthalimide unit and a polyamide strip; the polyamide strip contains six hydrogen bond donors and acceptors, and can form dimer through a hydrogen bond self-assembly ...
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
The acidity and basicity as hydrogen bond donors and acceptors have been measured for the compounds Ph 3MOH, where M = C, Si, Ge, Sn and Pb. The trends in acidity and basicity in these compounds indicate that dative pi-bonding from oxygen to M is strong in Ph 3SiOH, weaker in Ph ...
These results indicate that all of the oxygen and hydrogen atoms in apigenin can be hydrogen-bond acceptors and donors and that the oxygen and hydrogen atoms in the hydroxyl groups may be the preferred interaction sites over the other oxygen and hydrogen atoms. The carbon atom C9 has the ...
(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 the zero-point energy (ZPE) level (seeSection 2.1) lies above ...
A pair of ammonium groups tethered to the phenazine group in the 1 and 6 positions through alkyl amide links, act as hydrogen-bond donors to amide oxygen atoms of symmetry-related neighbouring dications. With each dication molecule having two hydrogen-bond donors and acceptors, an undulating 2D...