Zintl phases are formed between metals with a larger electronegativity difference, so they represent transition forms to ionic bonding. This is expressed in their crystal structures, which partly correspond to those of ionic compounds.
- Tab. 1
- Examples of Zintl phases
|Cesium chloride||LiAg, LiHg, LiTl, MgAg, CaHg, SrTl|
|AuCu3||NaPb3, CaCu3, CaTl3|
|Sodium thallide||NaTl, NaIn, LiGa, LiIn, LiZn|
The Zintl phases are generally stoichiometric with in some cases very narrow phase widths.