Inclusion compound

Inclusion compounds described in the chemical complexes, in which one component ( the host ) forms a cavity or in crystals interstices in the crystal lattice is formed in the shape of long tunnels or channels. In these interspaces a guest molecule is housed. There are no covalent bonds between the guest and host. The attraction effect mainly by van der Waals forces. If the guest is in a cage on all sides surrounded by the host lattice, it is called cage inclusion compounds, or clathrates.