Li2MnSiO4 is Stannite-like structured and crystallizes in the orthorhombic Pmn2_1 space group. Li(1) is bonded to one O(1), one O(2), and two equivalent O(3) atoms to form LiO4 tetrahedra that share corners with four equivalent Li(1)O4 tetrahedra, corners with four equivalent Mn(1)O4 tetrahedra, and corners with four equivalent Si(1)O4 tetrahedra. Mn(1) is bonded to one O(1), one O(2), and two equivalent O(3) atoms to form MnO4 tetrahedra that share corners with four equivalent Si(1)O4 tetrahedra and corners with eight equivalent Li(1)O4 tetrahedra. 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 four equivalent Mn(1)O4 tetrahedra and corners with eight equivalent Li(1)O4 tetrahedra. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Li(1), one Mn(1), and one Si(1) atom to form corner-sharing OLi2MnSi tetrahedra. In the second O site, O(2) is bonded to two equivalent Li(1), one Mn(1), and one Si(1) atom to form distorted corner-sharing OLi2MnSi tetrahedra. In the third O site, O(3) is bonded to two equivalent Li(1), one Mn(1), and one Si(1) atom to form corner-sharing OLi2MnSi tetrahedra.
Li2MnSiO4 is Stannite-like structured and crystallizes in the orthorhombic Pmn2_1 space group. Li(1) is bonded to one O(1), one O(2), and two equivalent O(3) atoms to form LiO4 tetrahedra that share corners with four equivalent Li(1)O4 tetrahedra, corners with four equivalent Mn(1)O4 tetrahedra, and corners with four equivalent Si(1)O4 tetrahedra. The Li(1)-O(1) bond length is 1.97 Å. The Li(1)-O(2) bond length is 2.03 Å. There is one shorter (1.98 Å) and one longer (2.01 Å) Li(1)-O(3) bond length. Mn(1) is bonded to one O(1), one O(2), and two equivalent O(3) atoms to form MnO4 tetrahedra that share corners with four equivalent Si(1)O4 tetrahedra and corners with eight equivalent Li(1)O4 tetrahedra. The Mn(1)-O(1) bond length is 2.10 Å. The Mn(1)-O(2) bond length is 2.12 Å. Both Mn(1)-O(3) bond lengths are 2.09 Å. 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 four equivalent Mn(1)O4 tetrahedra and corners with eight equivalent Li(1)O4 tetrahedra. The Si(1)-O(1) bond length is 1.65 Å. The Si(1)-O(2) bond length is 1.66 Å. Both Si(1)-O(3) bond lengths are 1.65 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Li(1), one Mn(1), and one Si(1) atom to form corner-sharing OLi2MnSi tetrahedra. In the second O site, O(2) is bonded to two equivalent Li(1), one Mn(1), and one Si(1) atom to form distorted corner-sharing OLi2MnSi tetrahedra. In the third O site, O(3) is bonded to two equivalent Li(1), one Mn(1), and one Si(1) atom to form corner-sharing OLi2MnSi tetrahedra.