Materials Data on Nd5CuSe8 by Materials Project
Nd5CuSe8 crystallizes in the tetragonal I-4 space group. The structure is three-dimensional. there are two inequivalent Nd3+ sites. In the first Nd3+ site, Nd3+ is bonded in a 8-coordinate geometry to eight Se2- atoms. There are a spread of Nd–Se bond distances ranging from 2.93–3.37 Å. In the second Nd3+ site, Nd3+ is bonded in a 8-coordinate geometry to eight Se2- atoms. There are four shorter (2.95 Å) and four longer (3.22 Å) Nd–Se bond lengths. Cu1+ is bonded in a 4-coordinate geometry to eight Se2- atoms. There are four shorter (2.78 Å) and four longer (3.35 Å) Cu–Se bond lengths. There are two inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a 6-coordinate geometry to five Nd3+ and one Cu1+ atom. In the second Se2- site, Se2- is bonded in a 5-coordinate geometry to five Nd3+ and one Cu1+ atom.