From structure-chemical point of view rare earth metal/calcium compounds are of great interest. Distinctive order-/disorder phenomena are expected, depending on ionic radii and charge of the rare earth metal. Nitrides of the composition (R_xCa_4−xN_y)Bi₂ with R = La, Ce, Pr, and (EuCa₂N_0,74)Sn were synthesized. While a partial order R/Ca was determined for the compound (R_xCa_4−xN_y)Bi₂, no indication for Eu/Ca order was observed for the cubic Perovskite (EuCa₂N_0,74)Sn. The compound (EuCa₂N_0,74)Sn represents the first inverse Perovskite nitride with a mixed oxidation state of the rare earth metal.     «

From structure-chemical point of view rare earth metal/calcium compounds are of great interest. Distinctive order-/disorder phenomena are expected, depending on ionic radii and charge of the rare earth metal. Nitrides of the composition (R_xCa_4−xN_y)Bi₂ with R = La, Ce, Pr, and (EuCa₂N_0,74)Sn were synthesized. While a partial order R/Ca was determined for the compound (R_xCa_4−xN_y)Bi₂, no indication for Eu/Ca order was observed for the cubic Perovskite (EuCa₂N_0,74)Sn. The compound (EuCa₂N_0,74)Sn rep...     »