ErSi crystallizes in the orthorhombic Cmcm space group. Er(1) is bonded in a 7-coordinate geometry to seven equivalent Si(1) atoms. Si(1) is bonded in a 9-coordinate geometry to seven equivalent Er(1) and two equivalent Si(1) atoms.
ErSi crystallizes in the orthorhombic Cmcm space group. Er(1) is bonded in a 7-coordinate geometry to seven equivalent Si(1) atoms. There are a spread of Er(1)-Si(1) bond distances ranging from 2.91-3.10 Å. Si(1) is bonded in a 9-coordinate geometry to seven equivalent Er(1) and two equivalent Si(1) atoms. Both Si(1)-Si(1) bond lengths are 2.48 Å.