Materials Data on Eu(Ni2B)6 by Materials Project

Abstract

Eu(Ni2B)6 crystallizes in the trigonal R-3m space group. The structure is three-dimensional. Eu2+ is bonded in a hexagonal planar geometry to six equivalent B3- atoms. All Eu–B bond lengths are 3.16 Å. There are two inequivalent Ni+1.33+ sites. In the first Ni+1.33+ site, Ni+1.33+ is bonded in a T-shaped geometry to three equivalent B3- atoms. There are two shorter (2.07 Å) and one longer (2.09 Å) Ni–B bond lengths. In the second Ni+1.33+ site, Ni+1.33+ is bonded to four equivalent B3- atoms to form a mixture of distorted edge and corner-sharing NiB4 trigonal pyramids. There are two shorter (2.04 Å) and two longer (2.10 Å) Ni–B bond lengths. B3- is bonded in a 7-coordinate geometry to one Eu2+ and seven Ni+1.33+ atoms.