The strongest form of it appears in the bifluoride ion.
This effect is responsible for the enol tautomer being favored over the keto tautomer in less-polar solvents. The strongest form of it appears in the bifluoride ion. It occurs thrice in G-C base pairs but twice in A-T base pairs, and it connects every carbonyl in an alpha helix to an amino four residues away. The relatively-low boiling point of H2S relative to water is a result of this interaction, which is intermediate in strength between covalent bonds and van der Waals interactions. In general, for this to occur, fluorine, nitrogen, or oxygen must act as an electron acceptor. For 10 points, identify this type of dipole-dipole interaction between certain electronegative atoms and the lightest element.
This effect is responsible for the enol tautomer being favored over the keto tautomer in less-polar solvents.
hydrogen bonding