Zn2SiO4 is Spinel-like structured and crystallizes in the orthorhombic Pnma space group. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form ZnO6 octahedra that share corners with four equivalent Zn(2)O6 octahedra, corners with two equivalent Si(1)O4 tetrahedra, edges with two equivalent Zn(1)O6 octahedra, edges with two equivalent Zn(2)O6 octahedra, and edges with two equivalent Si(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 56-64°. In the second Zn site, Zn(2) is bonded to one O(1), one O(2), and four equivalent O(3) atoms to form ZnO6 octahedra that share corners with four equivalent Zn(1)O6 octahedra, corners with four equivalent Zn(2)O6 octahedra, corners with four equivalent Si(1)O4 tetrahedra, edges with two equivalent Zn(1)O6 octahedra, and  an edgeedge with one Si(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 51-64°. Si(1) is bonded to one O(1), one O(2), and two equivalent O(3) atoms to form SiO4 tetrahedra that share corners with two equivalent Zn(1)O6 octahedra, corners with four equivalent Zn(2)O6 octahedra,  an edgeedge with one Zn(2)O6 octahedra, and edges with two equivalent Zn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-62°. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Zn(2), two equivalent Zn(1), and one Si(1) atom. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Zn(2), two equivalent Zn(1), and one Si(1) atom. In the third O site, O(3) is bonded in a rectangular see-saw-like geometry to one Zn(1), two equivalent Zn(2), and one Si(1) atom.
Zn2SiO4 is Spinel-like structured and crystallizes in the orthorhombic Pnma space group. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form ZnO6 octahedra that share corners with four equivalent Zn(2)O6 octahedra, corners with two equivalent Si(1)O4 tetrahedra, edges with two equivalent Zn(1)O6 octahedra, edges with two equivalent Zn(2)O6 octahedra, and edges with two equivalent Si(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 56-64°. Both Zn(1)-O(1) bond lengths are 2.14 Å. Both Zn(1)-O(2) bond lengths are 2.12 Å. Both Zn(1)-O(3) bond lengths are 2.20 Å. In the second Zn site, Zn(2) is bonded to one O(1), one O(2), and four equivalent O(3) atoms to form ZnO6 octahedra that share corners with four equivalent Zn(1)O6 octahedra, corners with four equivalent Zn(2)O6 octahedra, corners with four equivalent Si(1)O4 tetrahedra, edges with two equivalent Zn(1)O6 octahedra, and  an edgeedge with one Si(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 51-64°. The Zn(2)-O(1) bond length is 2.22 Å. The Zn(2)-O(2) bond length is 2.09 Å. There are two shorter (2.08 Å) and two longer (2.29 Å) Zn(2)-O(3) bond lengths. Si(1) is bonded to one O(1), one O(2), and two equivalent O(3) atoms to form SiO4 tetrahedra that share corners with two equivalent Zn(1)O6 octahedra, corners with four equivalent Zn(2)O6 octahedra,  an edgeedge with one Zn(2)O6 octahedra, and edges with two equivalent Zn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-62°. The Si(1)-O(1) bond length is 1.64 Å. The Si(1)-O(2) bond length is 1.68 Å. Both Si(1)-O(3) bond lengths are 1.66 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Zn(2), two equivalent Zn(1), and one Si(1) atom. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Zn(2), two equivalent Zn(1), and one Si(1) atom. In the third O site, O(3) is bonded in a rectangular see-saw-like geometry to one Zn(1), two equivalent Zn(2), and one Si(1) atom.