Materials Data on LaNi2Rh3 by Materials Project

Abstract

LaRh3Ni2 crystallizes in the orthorhombic Amm2 space group. The structure is three-dimensional. La is bonded in a 6-coordinate geometry to twelve Rh and six equivalent Ni atoms. There are eight shorter (3.34 Å) and four longer (3.35 Å) La–Rh bond lengths. There are a spread of La–Ni bond distances ranging from 3.06–3.08 Å. There are two inequivalent Rh sites. In the first Rh site, Rh is bonded to four equivalent La, four equivalent Rh, and four equivalent Ni atoms to form a mixture of distorted corner, edge, and face-sharing RhLa4Ni4Rh4 cuboctahedra. There are two shorter (2.65 Å) and two longer (2.66 Å) Rh–Rh bond lengths. All Rh–Ni bond lengths are 2.55 Å. In the second Rh site, Rh is bonded to four equivalent La, two equivalent Rh, and four equivalent Ni atoms to form a mixture of distorted corner, edge, and face-sharing RhLa4Ni4Rh2 cuboctahedra. There are two shorter (2.54 Å) and two longer (2.55 Å) Rh–Ni bond lengths. Ni is bonded in a 9-coordinate geometry to three equivalent La and six Rh atoms.