Materials Data on YbSiAu by Materials Project
YbAuSi crystallizes in the orthorhombic Imm2 space group. The structure is three-dimensional. there are two inequivalent Yb3+ sites. In the first Yb3+ site, Yb3+ is bonded in a 12-coordinate geometry to six equivalent Au1+ and six equivalent Si4- atoms. There are two shorter (3.00 Å) and four longer (3.13 Å) Yb–Au bond lengths. There are two shorter (3.08 Å) and four longer (3.32 Å) Yb–Si bond lengths. In the second Yb3+ site, Yb3+ is bonded in a 12-coordinate geometry to six equivalent Au1+ and six equivalent Si4- atoms. There are four shorter (3.11 Å) and two longer (3.26 Å) Yb–Au bond lengths. There are four shorter (3.00 Å) and two longer (3.19 Å) Yb–Si bond lengths. Au1+ is bonded in a 10-coordinate geometry to six Yb3+ and three equivalent Si4- atoms. There are two shorter (2.59 Å) and one longer (2.63 Å) Au–Si bond lengths. Si4- is bonded in a 3-coordinate geometry to six Yb3+, three equivalent Au1+, and one Si4- atom. The Si–Si bond length is 2.53 Å.