YbIrIn5 crystallizes in the tetragonal P4/mmm space group. Yb(1) is bonded to four equivalent In(2) and eight equivalent In(1) atoms to form YbIn12 cuboctahedra that share corners with four equivalent Yb(1)In12 cuboctahedra, faces with four equivalent Yb(1)In12 cuboctahedra, and faces with four equivalent In(2)Yb4In8 cuboctahedra. Ir(1) is bonded in a body-centered cubic geometry to eight equivalent In(1) atoms. There are two inequivalent In sites. In the first In site, In(1) is bonded in a 4-coordinate geometry to two equivalent Yb(1), two equivalent Ir(1), and two equivalent In(2) atoms. In the second In site, In(2) is bonded to four equivalent Yb(1) and eight equivalent In(1) atoms to form distorted InYb4In8 cuboctahedra that share corners with four equivalent In(2)Yb4In8 cuboctahedra, faces with four equivalent Yb(1)In12 cuboctahedra, and faces with four equivalent In(2)Yb4In8 cuboctahedra.
YbIrIn5 crystallizes in the tetragonal P4/mmm space group. Yb(1) is bonded to four equivalent In(2) and eight equivalent In(1) atoms to form YbIn12 cuboctahedra that share corners with four equivalent Yb(1)In12 cuboctahedra, faces with four equivalent Yb(1)In12 cuboctahedra, and faces with four equivalent In(2)Yb4In8 cuboctahedra. All Yb(1)-In(2) bond lengths are 3.29 Å. All Yb(1)-In(1) bond lengths are 3.21 Å. Ir(1) is bonded in a body-centered cubic geometry to eight equivalent In(1) atoms. All Ir(1)-In(1) bond lengths are 2.76 Å. There are two inequivalent In sites. In the first In site, In(1) is bonded in a 4-coordinate geometry to two equivalent Yb(1), two equivalent Ir(1), and two equivalent In(2) atoms. Both In(1)-In(2) bond lengths are 3.21 Å. In the second In site, In(2) is bonded to four equivalent Yb(1) and eight equivalent In(1) atoms to form distorted InYb4In8 cuboctahedra that share corners with four equivalent In(2)Yb4In8 cuboctahedra, faces with four equivalent Yb(1)In12 cuboctahedra, and faces with four equivalent In(2)Yb4In8 cuboctahedra.