ErIrSi crystallizes in the orthorhombic Pnma space group. Er(1) is bonded in a 11-coordinate geometry to six equivalent Ir(1) and five equivalent Si(1) atoms. Ir(1) is bonded in a 10-coordinate geometry to six equivalent Er(1) and four equivalent Si(1) atoms. Si(1) is bonded in a 9-coordinate geometry to five equivalent Er(1) and four equivalent Ir(1) atoms.
ErIrSi crystallizes in the orthorhombic Pnma space group. Er(1) is bonded in a 11-coordinate geometry to six equivalent Ir(1) and five equivalent Si(1) atoms. There are a spread of Er(1)-Ir(1) bond distances ranging from 2.97-3.25 Å. There are a spread of Er(1)-Si(1) bond distances ranging from 2.91-2.98 Å. Ir(1) is bonded in a 10-coordinate geometry to six equivalent Er(1) and four equivalent Si(1) atoms. There are a spread of Ir(1)-Si(1) bond distances ranging from 2.46-2.56 Å. Si(1) is bonded in a 9-coordinate geometry to five equivalent Er(1) and four equivalent Ir(1) atoms.