Results for “Eu(Cu2As)2”

Materials Data on Eu(Cu2As)2 by Materials Project

Eu(Cu2As)2 crystallizes in the trigonal R-3m space group. The structure is three-dimensional. Eu2+ is bonded to six equivalent As3- atoms to form edge-sharing EuAs6 octahedra. All Eu–As bond lengths are 3.04 Å. There are two inequivalent Cu1+ sites. In the first Cu1+ site, Cu1+ is bonded in a distorted trigonal non-coplanar geometry to three equivalent As3- atoms. All Cu–As bond lengths are 2.47 Å. In the second Cu1+ site, Cu1+ is bonded in a distorted single-bond geometry to four equivalent As3- atoms. There are one shorter (2.45 Å) and three longer (2.83 Å) Cu–As bond lengths. As3- is bonded in a 10-coordinate geometry to three equivalent Eu2+ and seven Cu1+ atoms.