Yb2SiO5 crystallizes in the monoclinic C2/c space group. There are two inequivalent Yb sites. In the first Yb site, Yb(1) is bonded in a 8-coordinate geometry to one O(2), one O(3), two equivalent O(1), two equivalent O(4), and two equivalent O(5) atoms. In the second Yb site, Yb(2) is bonded in a 6-coordinate geometry to one O(1), one O(3), one O(4), one O(5), and two equivalent O(2) atoms. Si(1) is bonded in a tetrahedral geometry to one O(2), one O(3), one O(4), and one O(5) atom. There are five inequivalent O sites. In the first O site, O(3) is bonded in a distorted trigonal planar geometry to one Yb(1), one Yb(2), and one Si(1) atom. In the second O site, O(4) is bonded in a 4-coordinate geometry to one Yb(2), two equivalent Yb(1), and one Si(1) atom. In the third O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to one Yb(2), two equivalent Yb(1), and one Si(1) atom. In the fourth O site, O(1) is bonded in a 4-coordinate geometry to one Yb(2), two equivalent Yb(1), and one O(1) atom. In the fifth O site, O(2) is bonded in a 4-coordinate geometry to one Yb(1), two equivalent Yb(2), and one Si(1) atom.
Yb2SiO5 crystallizes in the monoclinic C2/c space group. There are two inequivalent Yb sites. In the first Yb site, Yb(1) is bonded in a 8-coordinate geometry to one O(2), one O(3), two equivalent O(1), two equivalent O(4), and two equivalent O(5) atoms. The Yb(1)-O(2) bond length is 2.37 Å. The Yb(1)-O(3) bond length is 2.39 Å. There is one shorter (2.58 Å) and one longer (2.62 Å) Yb(1)-O(1) bond length. There is one shorter (2.26 Å) and one longer (2.41 Å) Yb(1)-O(4) bond length. There is one shorter (2.39 Å) and one longer (2.49 Å) Yb(1)-O(5) bond length. In the second Yb site, Yb(2) is bonded in a 6-coordinate geometry to one O(1), one O(3), one O(4), one O(5), and two equivalent O(2) atoms. The Yb(2)-O(1) bond length is 2.75 Å. The Yb(2)-O(3) bond length is 2.27 Å. The Yb(2)-O(4) bond length is 2.46 Å. The Yb(2)-O(5) bond length is 2.26 Å. There is one shorter (2.24 Å) and one longer (2.49 Å) Yb(2)-O(2) bond length. Si(1) is bonded in a tetrahedral geometry to one O(2), one O(3), one O(4), and one O(5) atom. The Si(1)-O(2) bond length is 1.66 Å. The Si(1)-O(3) bond length is 1.63 Å. The Si(1)-O(4) bond length is 1.65 Å. The Si(1)-O(5) bond length is 1.64 Å. There are five inequivalent O sites. In the first O site, O(3) is bonded in a distorted trigonal planar geometry to one Yb(1), one Yb(2), and one Si(1) atom. In the second O site, O(4) is bonded in a 4-coordinate geometry to one Yb(2), two equivalent Yb(1), and one Si(1) atom. In the third O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to one Yb(2), two equivalent Yb(1), and one Si(1) atom. In the fourth O site, O(1) is bonded in a 4-coordinate geometry to one Yb(2), two equivalent Yb(1), and one O(1) atom. The O(1)-O(1) bond length is 1.28 Å. In the fifth O site, O(2) is bonded in a 4-coordinate geometry to one Yb(1), two equivalent Yb(2), and one Si(1) atom.