Die Kristallstrukturen der Verbindungen Ca2Sb und Ca2Bi / The Crystal Structures of Ca2Sb and Ca2Bi

Abstract

Ca2Sb and Ca2Bi have been prepared and their structures determined. The two compounds are isotypic and crystallize tetragonal, space group I4/mmm. (Ca2Sb: α = 4.67 ± 0.02 Å, c = 16.28 ± 0.03 Å. Ca2Bi: α = 4.72 ± 0.02 Å, c = 16.54 ± 0.03 Å). There are very short Ca-Ca-distances in both compounds, the element(V)-atoms are coordinated only to Ca-atoms.