MgSiO6 crystallizes in the monoclinic P2_1/c space group. Mg(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form MgO6 octahedra that share corners with six equivalent Si(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 19-31°. Si(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form SiO6 octahedra that share corners with six equivalent Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 19-31°. There are three inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Mg(1) and one Si(1) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Mg(1) and one Si(1) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Mg(1) and one Si(1) atom.
MgSiO6 crystallizes in the monoclinic P2_1/c space group. Mg(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form MgO6 octahedra that share corners with six equivalent Si(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 19-31°. Both Mg(1)-O(1) bond lengths are 2.13 Å. Both Mg(1)-O(2) bond lengths are 2.07 Å. Both Mg(1)-O(3) bond lengths are 2.04 Å. Si(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form SiO6 octahedra that share corners with six equivalent Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 19-31°. Both Si(1)-O(1) bond lengths are 1.74 Å. Both Si(1)-O(2) bond lengths are 1.73 Å. Both Si(1)-O(3) bond lengths are 1.74 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Mg(1) and one Si(1) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Mg(1) and one Si(1) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Mg(1) and one Si(1) atom.