Noncovalent interactions

Definition

Noncovalent interactions are weak forces of attraction between molecules or parts of molecules that do not involve the sharing of electrons. These interactions include hydrogen bonds, ionic bonds, van der Waals forces, and dipole-dipole interactions.

Related terms

Hydrogen bond:

A type of weak chemical bond formed when a hydrogen atom that is covalently bonded to a highly electronegative atom like oxygen or nitrogen is attracted to another electronegative atom nearby.

Van der Waals forces: Weak attractions or repulsions between molecules or parts of molecules that arise from the presence of temporary dipoles in the molecules.

Dipole: dipole interaction - An attractive force between the positive end of one polar molecule and the negative end of another polar molecule