title: A new rhombohedral modification of EuNi5In.
abstract: A rhombohedral modification of europium pentanickel indide, r-EuNi(5)In, crystallizes in the R ̅3m space group and adopts the UCu(5)In structure type. The structure is closely related to the hexagonal, h-EuNi(5)In, form (CeNi(5)Sn type). Both EuNi(5)In modifications are composed of CaCu(5) (EuNi(5))-, MgCu(2) (InNi(2))- and NiAs (EuNi)-type slabs in a 1:2:1 ratio. The atoms in the structure have high coordination numbers, viz. 20 and 18 for europium, 14 for indium, and 12 and 10 for nickel. The structure features a two-dimensional network of (2)(∞)[Ni(8)] tetrahedral clusters arranged in the ab plane.
authors: Department of Analytical Chemistry, Ivan Franko National University of Lviv, Kyryla and Mefodia Str. 6, 79005 Lviv, Ukraine.
authors: Inna
authors: I
authors: Bigun
authors: Volodymyr
authors: V
authors: Smetana
authors: Yaroslav
authors: Y
authors: Kalychak