Alkaline-earth Metal Nitrides of the Main-Group Elements: Crystal Structures and Properties of Inverse Perovskites

The knowledge on alkaline-earth metal nitrides of main-group elements with Perovskite structures of the general composition (A(3)N(x)) E is reviewed. Compounds with closely related crystal structures denoted as Ruddlesden-Popper-Series are also taken into account. In a second part, radii considerations are discussed for use in prediction of the occurrence of distorted Perovskites and hexagonal Perovskite stacking variants.