Yb2Fe3Si5 crystallizes in the tetragonal P4/mnc space group. Yb(1) is bonded in a 13-coordinate geometry to two equivalent Fe(1), two equivalent Fe(2), two equivalent Si(2), three equivalent Si(3), and four equivalent Si(1) atoms. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a 6-coordinate geometry to two equivalent Yb(1), two equivalent Si(1), two equivalent Si(2), and two equivalent Si(3) atoms. In the second Fe site, Fe(2) is bonded to four equivalent Yb(1), two equivalent Fe(2), two equivalent Si(1), and four equivalent Si(3) atoms to form a mixture of distorted face and corner-sharing FeYb4Fe2Si6 cuboctahedra. There are three inequivalent Si sites. In the first Si site, Si(3) is bonded in a 9-coordinate geometry to three equivalent Yb(1), two equivalent Fe(1), two equivalent Fe(2), and two equivalent Si(1) atoms. In the second Si site, Si(1) is bonded in a 11-coordinate geometry to four equivalent Yb(1), one Fe(2), two equivalent Fe(1), two equivalent Si(1), and two equivalent Si(3) atoms. In the third Si site, Si(2) is bonded in a 8-coordinate geometry to four equivalent Yb(1) and four equivalent Fe(1) atoms.
Yb2Fe3Si5 crystallizes in the tetragonal P4/mnc space group. Yb(1) is bonded in a 13-coordinate geometry to two equivalent Fe(1), two equivalent Fe(2), two equivalent Si(2), three equivalent Si(3), and four equivalent Si(1) atoms. Both Yb(1)-Fe(1) bond lengths are 3.07 Å. Both Yb(1)-Fe(2) bond lengths are 3.17 Å. Both Yb(1)-Si(2) bond lengths are 2.95 Å. There is one shorter (2.77 Å) and two longer (2.90 Å) Yb(1)-Si(3) bond lengths. There are two shorter (3.02 Å) and two longer (3.07 Å) Yb(1)-Si(1) bond lengths. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a 6-coordinate geometry to two equivalent Yb(1), two equivalent Si(1), two equivalent Si(2), and two equivalent Si(3) atoms. Both Fe(1)-Si(1) bond lengths are 2.36 Å. Both Fe(1)-Si(2) bond lengths are 2.36 Å. There is one shorter (2.35 Å) and one longer (2.39 Å) Fe(1)-Si(3) bond length. In the second Fe site, Fe(2) is bonded to four equivalent Yb(1), two equivalent Fe(2), two equivalent Si(1), and four equivalent Si(3) atoms to form a mixture of distorted face and corner-sharing FeYb4Fe2Si6 cuboctahedra. Both Fe(2)-Fe(2) bond lengths are 2.73 Å. Both Fe(2)-Si(1) bond lengths are 2.62 Å. All Fe(2)-Si(3) bond lengths are 2.36 Å. There are three inequivalent Si sites. In the first Si site, Si(3) is bonded in a 9-coordinate geometry to three equivalent Yb(1), two equivalent Fe(1), two equivalent Fe(2), and two equivalent Si(1) atoms. Both Si(3)-Si(1) bond lengths are 2.51 Å. In the second Si site, Si(1) is bonded in a 11-coordinate geometry to four equivalent Yb(1), one Fe(2), two equivalent Fe(1), two equivalent Si(1), and two equivalent Si(3) atoms. Both Si(1)-Si(1) bond lengths are 2.73 Å. In the third Si site, Si(2) is bonded in a 8-coordinate geometry to four equivalent Yb(1) and four equivalent Fe(1) atoms.