ABSTRACT
In the following sections, we review the main properties of covalent Si clathrates. ™e connection between clathrate physics and other šelds (cluster physics, surface physics, amorphous structure, etc.) will be also brie°y included. In the šrst part, we discuss the properties of the clathrates without an interpenetrating lattice. In the second part, we focus on the case of endohedrally doped clathrates and some of their relevant properties.
