IrSi3 is Sodium arsenide structured and crystallizes in the hexagonal P6_3/mmc space group. Ir(1) is bonded in a 11-coordinate geometry to three equivalent Si(2) and eight equivalent Si(1) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 1-coordinate geometry to four equivalent Ir(1) atoms. In the second Si site, Si(2) is bonded in a trigonal planar geometry to three equivalent Ir(1) atoms.
IrSi3 is Sodium arsenide structured and crystallizes in the hexagonal P6_3/mmc space group. Ir(1) is bonded in a 11-coordinate geometry to three equivalent Si(2) and eight equivalent Si(1) atoms. All Ir(1)-Si(2) bond lengths are 2.53 Å. There are two shorter (2.48 Å) and six longer (2.81 Å) Ir(1)-Si(1) bond lengths. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 1-coordinate geometry to four equivalent Ir(1) atoms. In the second Si site, Si(2) is bonded in a trigonal planar geometry to three equivalent Ir(1) atoms.