Results for “Pd-Rh” | Engineering Papers

DOE OSTI2020

Materials Data on Pd3Rh by Materials Project

Pd3Rh is alpha La-derived structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Rh is bonded to twelve Pd atoms to form RhPd12 cuboctahedra that share corners with four equivalent RhPd12 cuboctahedra, corners with eight equivalent PdPd8Rh4 cuboctahedra, edges with eight equivalent RhPd12 cuboctahedra, edges with sixteen equivalent PdPd8Rh4 cuboctahedra, faces with four equivalent RhPd12 cuboctahedra, and faces with fourteen PdPd8Rh4 cuboctahedra. There are eight shorter (2.77 Å) and four longer (2.79 Å) Rh–Pd bond lengths. There are two inequivalent Pd sites. In the first Pd site, Pd is bonded to four equivalent Rh and eight Pd atoms to form PdPd8Rh4 cuboctahedra that share corners with twelve equivalent PdPd8Rh4 cuboctahedra, edges with eight equivalent RhPd12 cuboctahedra, edges with sixteen PdPd8Rh4 cuboctahedra, faces with four equivalent RhPd12 cuboctahedra, and faces with fourteen PdPd8Rh4 cuboctahedra. There are four shorter (2.77 Å) and four longer (2.79 Å) Pd–Pd bond lengths. In the second Pd site, Pd is bonded to four equivalent Rh and eight equivalent Pd atoms to form PdPd8Rh4 cuboctahedra that share corners with four equivalent PdPd8Rh4 cuboctahedra, corners with eight equivalent RhPd12 cuboctahedra, edges with twenty-four PdPd8Rh4 cuboctahedra, faces with six equivalent RhPd12 cuboctahedra, and faces with twelve PdPd8Rh4 cuboctahedra.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on PdRh by Materials Project

RhPd is alpha La-derived structured and crystallizes in the trigonal R-3m space group. The structure is three-dimensional. there are two inequivalent Rh sites. In the first Rh site, Rh is bonded to six equivalent Rh and six Pd atoms to form RhPd6Rh6 cuboctahedra that share corners with twelve RhPd6Rh6 cuboctahedra, edges with twelve RhPd6Rh6 cuboctahedra, edges with twelve PdPd6Rh6 cuboctahedra, faces with six equivalent RhPd6Rh6 cuboctahedra, and faces with twelve PdPd6Rh6 cuboctahedra. All Rh–Rh bond lengths are 2.76 Å. All Rh–Pd bond lengths are 2.75 Å. In the second Rh site, Rh is bonded to ten equivalent Rh and six Pd atoms to form RhPd6Rh10 cuboctahedra that share corners with ten PdPd6Rh6 cuboctahedra, corners with twelve RhPd6Rh6 cuboctahedra, edges with eight PdPd6Rh6 cuboctahedra, edges with sixteen RhPd6Rh6 cuboctahedra, faces with sixteen equivalent RhPd6Rh10 cuboctahedra, and faces with eighteen PdPd6Rh6 cuboctahedra. There are a spread of Rh–Rh bond distances ranging from 2.76–5.52 Å. All Rh–Pd bond lengths are 2.75 Å. There are three inequivalent Pd sites. In the first Pd site, Pd is bonded to six equivalent Rh and six equivalent Pd atoms to form PdPd6Rh6 cuboctahedra that share corners with twelve PdPd6Rh6 cuboctahedra, edges with twelve equivalent RhPd6Rh6 cuboctahedra, edges with twelve PdPd6Rh6 cuboctahedra, faces with six equivalent PdPd6Rh6 cuboctahedra, and faces with twelve equivalent RhPd6Rh6 cuboctahedra. All Pd–Pd bond lengths are 2.76 Å. In the second Pd site, Pd is bonded to six Rh and six equivalent Pd atoms to form PdPd6Rh6 cuboctahedra that share corners with five equivalent RhPd6Rh10 cuboctahedra, corners with twelve PdPd6Rh6 cuboctahedra, edges with ten RhPd6Rh6 cuboctahedra, edges with twelve PdPd6Rh6 cuboctahedra, faces with six equivalent PdPd6Rh6 cuboctahedra, and faces with fifteen RhPd6Rh6 cuboctahedra. All Pd–Rh bond lengths are 2.75 Å. All Pd–Pd bond lengths are 2.76 Å. In the third Pd site, Pd is bonded to six Rh and six equivalent Pd atoms to form PdPd6Rh6 cuboctahedra that share corners with five equivalent RhPd6Rh10 cuboctahedra, corners with twelve PdPd6Rh6 cuboctahedra, edges with ten RhPd6Rh6 cuboctahedra, edges with twelve PdPd6Rh6 cuboctahedra, faces with six equivalent PdPd6Rh6 cuboctahedra, and faces with fifteen RhPd6Rh6 cuboctahedra. All Pd–Pd bond lengths are 2.76 Å.

36 MATERIALS SCIENCE↗