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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Ir3Rh by Materials Project

Ir3Rh is alpha La-derived structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. there are two inequivalent Ir sites. In the first Ir site, Ir is bonded to eight Ir and four equivalent Rh atoms to form IrIr8Rh4 cuboctahedra that share corners with twelve equivalent IrIr8Rh4 cuboctahedra, edges with eight equivalent RhIr12 cuboctahedra, edges with sixteen IrIr8Rh4 cuboctahedra, faces with four equivalent RhIr12 cuboctahedra, and faces with fourteen IrIr8Rh4 cuboctahedra. All Ir–Ir bond lengths are 2.74 Å. All Ir–Rh bond lengths are 2.74 Å. In the second Ir site, Ir is bonded to eight equivalent Ir and four equivalent Rh atoms to form IrIr8Rh4 cuboctahedra that share corners with four equivalent IrIr8Rh4 cuboctahedra, corners with eight equivalent RhIr12 cuboctahedra, edges with twenty-four IrIr8Rh4 cuboctahedra, faces with six equivalent RhIr12 cuboctahedra, and faces with twelve IrIr8Rh4 cuboctahedra. All Ir–Rh bond lengths are 2.74 Å. Rh is bonded to twelve Ir atoms to form RhIr12 cuboctahedra that share corners with four equivalent RhIr12 cuboctahedra, corners with eight equivalent IrIr8Rh4 cuboctahedra, edges with eight equivalent RhIr12 cuboctahedra, edges with sixteen equivalent IrIr8Rh4 cuboctahedra, faces with four equivalent RhIr12 cuboctahedra, and faces with fourteen IrIr8Rh4 cuboctahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on IrRh3 by Materials Project

IrRh3 is alpha La-derived structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Ir is bonded to twelve Rh atoms to form IrRh12 cuboctahedra that share corners with four equivalent IrRh12 cuboctahedra, corners with eight equivalent RhIr4Rh8 cuboctahedra, edges with eight equivalent IrRh12 cuboctahedra, edges with sixteen equivalent RhIr4Rh8 cuboctahedra, faces with four equivalent IrRh12 cuboctahedra, and faces with fourteen RhIr4Rh8 cuboctahedra. There are four shorter (2.72 Å) and eight longer (2.73 Å) Ir–Rh bond lengths. There are two inequivalent Rh sites. In the first Rh site, Rh is bonded to four equivalent Ir and eight Rh atoms to form RhIr4Rh8 cuboctahedra that share corners with twelve equivalent RhIr4Rh8 cuboctahedra, edges with eight equivalent IrRh12 cuboctahedra, edges with sixteen RhIr4Rh8 cuboctahedra, faces with four equivalent IrRh12 cuboctahedra, and faces with fourteen RhIr4Rh8 cuboctahedra. There are four shorter (2.72 Å) and four longer (2.73 Å) Rh–Rh bond lengths. In the second Rh site, Rh is bonded to four equivalent Ir and eight equivalent Rh atoms to form RhIr4Rh8 cuboctahedra that share corners with four equivalent RhIr4Rh8 cuboctahedra, corners with eight equivalent IrRh12 cuboctahedra, edges with twenty-four RhIr4Rh8 cuboctahedra, faces with six equivalent IrRh12 cuboctahedra, and faces with twelve RhIr4Rh8 cuboctahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on IrRh3 by Materials Project

IrRh3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Ir is bonded to twelve equivalent Rh atoms to form IrRh12 cuboctahedra that share corners with twelve equivalent IrRh12 cuboctahedra, edges with twenty-four equivalent RhIr4Rh8 cuboctahedra, faces with six equivalent IrRh12 cuboctahedra, and faces with twelve equivalent RhIr4Rh8 cuboctahedra. All Ir–Rh bond lengths are 2.73 Å. Rh is bonded to four equivalent Ir and eight equivalent Rh atoms to form RhIr4Rh8 cuboctahedra that share corners with twelve equivalent RhIr4Rh8 cuboctahedra, edges with eight equivalent IrRh12 cuboctahedra, edges with sixteen equivalent RhIr4Rh8 cuboctahedra, faces with four equivalent IrRh12 cuboctahedra, and faces with fourteen equivalent RhIr4Rh8 cuboctahedra. All Rh–Rh bond lengths are 2.73 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ir3Rh by Materials Project

Ir3Rh is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Ir is bonded to eight equivalent Ir and four equivalent Rh atoms to form IrIr8Rh4 cuboctahedra that share corners with twelve equivalent IrIr8Rh4 cuboctahedra, edges with eight equivalent RhIr12 cuboctahedra, edges with sixteen equivalent IrIr8Rh4 cuboctahedra, faces with four equivalent RhIr12 cuboctahedra, and faces with fourteen equivalent IrIr8Rh4 cuboctahedra. All Ir–Ir bond lengths are 2.74 Å. All Ir–Rh bond lengths are 2.74 Å. Rh is bonded to twelve equivalent Ir atoms to form RhIr12 cuboctahedra that share corners with twelve equivalent RhIr12 cuboctahedra, edges with twenty-four equivalent IrIr8Rh4 cuboctahedra, faces with six equivalent RhIr12 cuboctahedra, and faces with twelve equivalent IrIr8Rh4 cuboctahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on IrRh by Materials Project

IrRh is alpha La-derived structured and crystallizes in the trigonal R-3m space group. The structure is three-dimensional. there are three inequivalent Ir sites. In the first Ir site, Ir is bonded to six equivalent Ir and six equivalent Rh atoms to form IrIr6Rh6 cuboctahedra that share corners with twelve IrIr6Rh6 cuboctahedra, edges with twelve IrIr6Rh6 cuboctahedra, edges with twelve equivalent RhIr6Rh6 cuboctahedra, faces with six equivalent IrIr6Rh6 cuboctahedra, and faces with twelve equivalent RhIr6Rh6 cuboctahedra. All Ir–Ir bond lengths are 2.73 Å. All Ir–Rh bond lengths are 2.73 Å. In the second Ir site, Ir is bonded to six equivalent Ir and six Rh atoms to form IrIr6Rh6 cuboctahedra that share corners with five equivalent RhIr6Rh10 cuboctahedra, corners with twelve IrIr6Rh6 cuboctahedra, edges with ten RhIr6Rh6 cuboctahedra, edges with twelve IrIr6Rh6 cuboctahedra, faces with six equivalent IrIr6Rh6 cuboctahedra, and faces with fifteen RhIr6Rh6 cuboctahedra. All Ir–Ir bond lengths are 2.73 Å. All Ir–Rh bond lengths are 2.73 Å. In the third Ir site, Ir is bonded to six equivalent Ir and six Rh atoms to form IrIr6Rh6 cuboctahedra that share corners with five equivalent RhIr6Rh10 cuboctahedra, corners with twelve IrIr6Rh6 cuboctahedra, edges with ten RhIr6Rh6 cuboctahedra, edges with twelve IrIr6Rh6 cuboctahedra, faces with six equivalent IrIr6Rh6 cuboctahedra, and faces with fifteen RhIr6Rh6 cuboctahedra. All Ir–Ir bond lengths are 2.73 Å. All Ir–Rh bond lengths are 2.73 Å. There are two inequivalent Rh sites. In the first Rh site, Rh is bonded to six Ir and six equivalent Rh atoms to form RhIr6Rh6 cuboctahedra that share corners with twelve RhIr6Rh6 cuboctahedra, edges with twelve IrIr6Rh6 cuboctahedra, edges with twelve RhIr6Rh6 cuboctahedra, faces with six equivalent RhIr6Rh6 cuboctahedra, and faces with twelve IrIr6Rh6 cuboctahedra. All Rh–Rh bond lengths are 2.73 Å. In the second Rh site, Rh is bonded to six Ir and ten equivalent Rh atoms to form RhIr6Rh10 cuboctahedra that share corners with ten IrIr6Rh6 cuboctahedra, corners with twelve RhIr6Rh6 cuboctahedra, edges with eight IrIr6Rh6 cuboctahedra, edges with sixteen RhIr6Rh6 cuboctahedra, faces with sixteen equivalent RhIr6Rh10 cuboctahedra, and faces with eighteen IrIr6Rh6 cuboctahedra. There are a spread of Rh–Rh bond distances ranging from 2.73–5.46 Å.

36 MATERIALS SCIENCE↗