The primary intermolecular H bonds (N-H˙˙˙O) are shown as black lines. (d – g) Series of DFM images of a different NTCDI island taken at 5 K with progressively smaller tip-sample separations ...

Intermolecular non-polar H···H interactions between polyhedrane molecules may be as attractive as classical hydrogen bonds. A theoretical study identifies the chemical and structural factors ...

Hydrogen bonds form between two atoms and a hydrogen atom. Atoms, such as oxygen, can be covalently bound to hydrogen, and giving the hydrogen (H) in the OH group a slight positive charge due to ...

The F–H–F – anion can form conventional hydrogen bonds, but scientists found it can also form bonds that look covalent, blurring the line between these two kinds of bonds. (green = F; gray = H).

The nitrogens should have no bonding interaction, yet AFM images appear to show a bond between the atoms (Phys. Rev. Lett. 2014, DOI: 10.1103/physrevlett.113.186102).

The future of the hydrogen fuel cell vehicle took a dent last week as one of the world's biggest automakers reversed course.