LiCoSiO4 crystallizes in the monoclinic P2_1 space group. Li(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form distorted LiO4 tetrahedra that share corners with two equivalent Si(1)O4 tetrahedra, corners with four equivalent Co(1)O4 tetrahedra, and  an edgeedge with one Si(1)O4 tetrahedra. Co(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form CoO4 tetrahedra that share corners with four equivalent Li(1)O4 tetrahedra and corners with four equivalent Si(1)O4 tetrahedra. Si(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form SiO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with four equivalent Co(1)O4 tetrahedra, and  an edgeedge with one Li(1)O4 tetrahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Li(1), one Co(1), and one Si(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Li(1), one Co(1), and one Si(1) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Li(1), one Co(1), and one Si(1) atom. In the fourth O site, O(4) is bonded in a distorted T-shaped geometry to one Li(1), one Co(1), and one Si(1) atom.
LiCoSiO4 crystallizes in the monoclinic P2_1 space group. Li(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form distorted LiO4 tetrahedra that share corners with two equivalent Si(1)O4 tetrahedra, corners with four equivalent Co(1)O4 tetrahedra, and  an edgeedge with one Si(1)O4 tetrahedra. The Li(1)-O(1) bond length is 1.98 Å. The Li(1)-O(2) bond length is 2.00 Å. The Li(1)-O(3) bond length is 2.09 Å. The Li(1)-O(4) bond length is 2.07 Å. Co(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form CoO4 tetrahedra that share corners with four equivalent Li(1)O4 tetrahedra and corners with four equivalent Si(1)O4 tetrahedra. The Co(1)-O(1) bond length is 1.87 Å. The Co(1)-O(2) bond length is 1.87 Å. The Co(1)-O(3) bond length is 1.85 Å. The Co(1)-O(4) bond length is 1.85 Å. Si(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form SiO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with four equivalent Co(1)O4 tetrahedra, and  an edgeedge with one Li(1)O4 tetrahedra. The Si(1)-O(1) bond length is 1.64 Å. The Si(1)-O(2) bond length is 1.65 Å. The Si(1)-O(3) bond length is 1.65 Å. The Si(1)-O(4) bond length is 1.65 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Li(1), one Co(1), and one Si(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Li(1), one Co(1), and one Si(1) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Li(1), one Co(1), and one Si(1) atom. In the fourth O site, O(4) is bonded in a distorted T-shaped geometry to one Li(1), one Co(1), and one Si(1) atom.