The new structure type Ce₅Co₄Ge₁₃

Chem. Met. Alloys 1 (2008) 43-45

https://doi.org/10.30970/cma1.0035

Bohdana BELAN, Julia STĘPEŃ-DAMM, Roman GLADYSHEVSKII, Oksana BODAK

The crystal structure of Ce₅Co₄Ge₁₃ was refined from single-crystal X-ray diffraction data. This new orthorhombic structure type (space group Cmmm, a = 4.265(1), b = 45.175(9), c = 4.293(1) Å) is a filled-up derivative of the Nb₅Ga₁₃ type and contains AlB₂-, BaNiSn₃- and AuCu₃-type slabs intergrown along [010]. The “interstitial” Co atoms are characterized by bicapped square-antiprismatic [Ce₅Ge₅] coordination.

Projections of the structures of Ce₅Co₄Ge₁₃ and Nb₅Ga₁₃ along [001].

Keywords

Cerium / Cobalt / Crystal structure / Germanium / Intermetallic compound