Materials Data on Eu2Si3Ni8 by Materials Project

Abstract

Eu2Ni8Si3 crystallizes in the tetragonal P4_2/nmc space group. The structure is three-dimensional. Eu2+ is bonded in a 1-coordinate geometry to five Si4- atoms. There are a spread of Eu–Si bond distances ranging from 3.08–3.39 Å. There are three inequivalent Ni1+ sites. In the first Ni1+ site, Ni1+ is bonded in a bent 120 degrees geometry to two equivalent Si4- atoms. Both Ni–Si bond lengths are 2.35 Å. In the second Ni1+ site, Ni1+ is bonded to four Si4- atoms to form a mixture of edge and corner-sharing NiSi4 tetrahedra. There are a spread of Ni–Si bond distances ranging from 2.28–2.59 Å. In the third Ni1+ site, Ni1+ is bonded in a 3-coordinate geometry to three Si4- atoms. There are a spread of Ni–Si bond distances ranging from 2.32–2.43 Å. There are two inequivalent Si4- sites. In the first Si4- site, Si4- is bonded in a 10-coordinate geometry to two equivalent Eu2+ and eight Ni1+ atoms. In the second Si4- site, Si4- is bonded in a 12-coordinate geometry to four equivalent Eu2+ and eight Ni1+ atoms.