YbAuSi crystallizes in the orthorhombic Imm2 space group. There are two inequivalent Yb sites. In the first Yb site, Yb(1) is bonded in a 12-coordinate geometry to six equivalent Au(1) and six equivalent Si(1) atoms. In the second Yb site, Yb(2) is bonded in a 12-coordinate geometry to six equivalent Au(1) and six equivalent Si(1) atoms. Au(1) is bonded in a 10-coordinate geometry to three equivalent Yb(1), three equivalent Yb(2), one Au(1), and three equivalent Si(1) atoms. Si(1) is bonded in a 10-coordinate geometry to three equivalent Yb(1), three equivalent Yb(2), three equivalent Au(1), and one Si(1) atom.
YbAuSi crystallizes in the orthorhombic Imm2 space group. There are two inequivalent Yb sites. In the first Yb site, Yb(1) is bonded in a 12-coordinate geometry to six equivalent Au(1) and six equivalent Si(1) atoms. There are two shorter (2.97 Å) and four longer (3.10 Å) Yb(1)-Au(1) bond lengths. There are two shorter (3.06 Å) and four longer (3.28 Å) Yb(1)-Si(1) bond lengths. In the second Yb site, Yb(2) is bonded in a 12-coordinate geometry to six equivalent Au(1) and six equivalent Si(1) atoms. There are four shorter (3.07 Å) and two longer (3.24 Å) Yb(2)-Au(1) bond lengths. There are four shorter (2.97 Å) and two longer (3.15 Å) Yb(2)-Si(1) bond lengths. Au(1) is bonded in a 10-coordinate geometry to three equivalent Yb(1), three equivalent Yb(2), one Au(1), and three equivalent Si(1) atoms. The Au(1)-Au(1) bond length is 3.14 Å. There are two shorter (2.57 Å) and one longer (2.60 Å) Au(1)-Si(1) bond length. Si(1) is bonded in a 10-coordinate geometry to three equivalent Yb(1), three equivalent Yb(2), three equivalent Au(1), and one Si(1) atom. The Si(1)-Si(1) bond length is 2.52 Å.