Is an ionic bond intermolecular or intramolecular?

Intermolecular forces are forces of attraction or repulsion which act between neighboring particles (atoms, molecules or ions). They are weak compared to the intramolecular forces, the forces which keep a molecule together. For example, the covalent bond present within HCl molecules is much stronger than the forces present between the neighbouring molecules, which exist when the molecules are sufficiently close to each other.

Instantaneous dipole-induced dipole forces or London dispersion forces. Otherwise known as quantum-induced instantaneous polarization or instantaneous dipole-induced dipole force, the London dispersion force is caused by correlated movements of the electrons in interacting molecules. Electrons that belong to different molecules start "fleeing" and avoiding each other at the short intermolecular distances, which is frequently described as formation of "instantaneous dipoles" that attract each other.

Intramolecular multiple force theory (IMMFT) is a concept which deals with the forces which are developed in different domains of similar supramolecules. The supramolecules such as dendrimer and others have different discrete zones with their own environment and center of forces and these forces when coordinated to each other in similar molecules, a unique molecular mechanics and dynamics are developed known as the intramolecular multiple force theory. The induced dipole forces appear from the induction (also known as polarization), which is the attractive interaction between a permanent multipole on one molecule with an induced (by the former di/multi-pole) multipole on another.

1234 This interaction is called Debye force after Peter J.W. Debye.