Materials Data on La(AsRh)2 by Materials Project

Abstract

La(RhAs)2 crystallizes in the tetragonal P4/nmm space group. The structure is three-dimensional. La is bonded in a 4-coordinate geometry to eight Rh and eight As atoms. There are four shorter (3.32 Å) and four longer (3.36 Å) La–Rh bond lengths. There are four shorter (3.28 Å) and four longer (3.29 Å) La–As bond lengths. There are two inequivalent Rh sites. In the first Rh site, Rh is bonded in a 12-coordinate geometry to four equivalent La and four equivalent As atoms. All Rh–As bond lengths are 2.57 Å. In the second Rh site, Rh is bonded in a 9-coordinate geometry to four equivalent La and five As atoms. There are one shorter (2.46 Å) and four longer (2.48 Å) Rh–As bond lengths. There are two inequivalent As sites. In the first As site, As is bonded in a 8-coordinate geometry to four equivalent La and four equivalent Rh atoms. In the second As site, As is bonded in a 9-coordinate geometry to four equivalent La and five Rh atoms.