Materials Data on Eu2S3 by Materials Project
Eu2S3 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are two inequivalent Eu3+ sites. In the first Eu3+ site, Eu3+ is bonded to seven S2- atoms to form distorted edge-sharing EuS7 pentagonal bipyramids. There are a spread of Eu–S bond distances ranging from 2.81–2.98 Å. In the second Eu3+ site, Eu3+ is bonded in a 8-coordinate geometry to eight S2- atoms. There are a spread of Eu–S bond distances ranging from 2.83–3.09 Å. There are three inequivalent S2- sites. In the first S2- site, S2- is bonded to five Eu3+ atoms to form a mixture of distorted edge and corner-sharing SEu5 trigonal bipyramids. In the second S2- site, S2- is bonded to five Eu3+ atoms to form a mixture of distorted edge and corner-sharing SEu5 square pyramids. In the third S2- site, S2- is bonded in a 5-coordinate geometry to five Eu3+ atoms.