PrIrIn5 crystallizes in the tetragonal P4/mmm space group. Pr(1) is bonded to four equivalent In(1) and eight equivalent In(2) atoms to form PrIn12 cuboctahedra that share corners with four equivalent Pr(1)In12 cuboctahedra, faces with four equivalent Pr(1)In12 cuboctahedra, and faces with four equivalent In(1)Pr4In8 cuboctahedra. Ir(1) is bonded in a body-centered cubic geometry to eight equivalent In(2) atoms. There are two inequivalent In sites. In the first In site, In(1) is bonded to four equivalent Pr(1) and eight equivalent In(2) atoms to form distorted InPr4In8 cuboctahedra that share corners with four equivalent In(1)Pr4In8 cuboctahedra, faces with four equivalent Pr(1)In12 cuboctahedra, and faces with four equivalent In(1)Pr4In8 cuboctahedra. In the second In site, In(2) is bonded in a 4-coordinate geometry to two equivalent Pr(1), two equivalent Ir(1), and two equivalent In(1) atoms.
PrIrIn5 crystallizes in the tetragonal P4/mmm space group. Pr(1) is bonded to four equivalent In(1) and eight equivalent In(2) atoms to form PrIn12 cuboctahedra that share corners with four equivalent Pr(1)In12 cuboctahedra, faces with four equivalent Pr(1)In12 cuboctahedra, and faces with four equivalent In(1)Pr4In8 cuboctahedra. All Pr(1)-In(1) bond lengths are 3.32 Å. All Pr(1)-In(2) bond lengths are 3.30 Å. Ir(1) is bonded in a body-centered cubic geometry to eight equivalent In(2) atoms. All Ir(1)-In(2) bond lengths are 2.77 Å. There are two inequivalent In sites. In the first In site, In(1) is bonded to four equivalent Pr(1) and eight equivalent In(2) atoms to form distorted InPr4In8 cuboctahedra that share corners with four equivalent In(1)Pr4In8 cuboctahedra, faces with four equivalent Pr(1)In12 cuboctahedra, and faces with four equivalent In(1)Pr4In8 cuboctahedra. All In(1)-In(2) bond lengths are 3.30 Å. In the second In site, In(2) is bonded in a 4-coordinate geometry to two equivalent Pr(1), two equivalent Ir(1), and two equivalent In(1) atoms.