Li3Co2(SiO4)2 is Clathrate-derived structured and crystallizes in the monoclinic Pc space group. There are three inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(1), one O(3), one O(7), and one O(8) atom to form LiO4 tetrahedra that share corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent Co(1)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, and  an edgeedge with one Li(3)O4 tetrahedra. In the second Li site, Li(2) is bonded to one O(1), one O(4), one O(6), and one O(7) atom to form distorted LiO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent Li(3)O4 tetrahedra, corners with two equivalent Co(1)O4 tetrahedra, corners with two equivalent Co(2)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, and corners with two equivalent Si(2)O4 tetrahedra. In the third Li site, Li(3) is bonded to one O(1), one O(2), one O(6), and one O(8) atom to form LiO4 tetrahedra that share corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent Co(2)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, and  an edgeedge with one Li(1)O4 tetrahedra. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(3), one O(4), one O(5), and one O(7) atom to form CoO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, and  an edgeedge with one Co(2)O4 tetrahedra. In the second Co site, Co(2) is bonded to one O(2), one O(4), one O(5), and one O(6) atom to form CoO4 tetrahedra that share corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent Li(3)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, and  an edgeedge with one Co(1)O4 tetrahedra. There are two inequivalent Si sites. In the first Si site, 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 two equivalent Li(2)O4 tetrahedra, corners with two equivalent Li(3)O4 tetrahedra, corners with two equivalent Co(1)O4 tetrahedra, and corners with two equivalent Co(2)O4 tetrahedra. In the second Si site, Si(2) is bonded to one O(5), one O(6), one O(7), and one O(8) atom to form SiO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent Li(3)O4 tetrahedra, corners with two equivalent Co(1)O4 tetrahedra, and corners with two equivalent Co(2)O4 tetrahedra. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one Li(1), one Li(2), one Li(3), and one Si(1) atom to form distorted OLi3Si tetrahedra that share corners with two equivalent O(6)Li2CoSi tetrahedra, corners with two equivalent O(7)Li2CoSi tetrahedra, and corners with two equivalent O(4)LiCo2Si trigonal pyramids. In the second O site, O(2) is bonded in a trigonal planar geometry to one Li(3), one Co(2), and one Si(1) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Li(1), one Co(1), and one Si(1) atom. In the fourth O site, O(4) is bonded to one Li(2), one Co(1), one Co(2), and one Si(1) atom to form distorted OLiCo2Si trigonal pyramids that share corners with two equivalent O(6)Li2CoSi tetrahedra, corners with two equivalent O(7)Li2CoSi tetrahedra, and corners with two equivalent O(1)Li3Si tetrahedra. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Co(1), one Co(2), and one Si(2) atom. In the sixth O site, O(6) is bonded to one Li(2), one Li(3), one Co(2), and one Si(2) atom to form OLi2CoSi tetrahedra that share corners with two equivalent O(7)Li2CoSi tetrahedra, corners with two equivalent O(1)Li3Si tetrahedra, and corners with two equivalent O(4)LiCo2Si trigonal pyramids. In the seventh O site, O(7) is bonded to one Li(1), one Li(2), one Co(1), and one Si(2) atom to form OLi2CoSi tetrahedra that share corners with two equivalent O(6)Li2CoSi tetrahedra, corners with two equivalent O(1)Li3Si tetrahedra, and corners with two equivalent O(4)LiCo2Si trigonal pyramids. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Li(1), one Li(3), and one Si(2) atom.
Li3Co2(SiO4)2 is Clathrate-derived structured and crystallizes in the monoclinic Pc space group. There are three inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(1), one O(3), one O(7), and one O(8) atom to form LiO4 tetrahedra that share corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent Co(1)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, and  an edgeedge with one Li(3)O4 tetrahedra. The Li(1)-O(1) bond length is 1.98 Å. The Li(1)-O(3) bond length is 1.98 Å. The Li(1)-O(7) bond length is 2.16 Å. The Li(1)-O(8) bond length is 1.97 Å. In the second Li site, Li(2) is bonded to one O(1), one O(4), one O(6), and one O(7) atom to form distorted LiO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent Li(3)O4 tetrahedra, corners with two equivalent Co(1)O4 tetrahedra, corners with two equivalent Co(2)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, and corners with two equivalent Si(2)O4 tetrahedra. The Li(2)-O(1) bond length is 1.94 Å. The Li(2)-O(4) bond length is 2.38 Å. The Li(2)-O(6) bond length is 2.07 Å. The Li(2)-O(7) bond length is 2.04 Å. In the third Li site, Li(3) is bonded to one O(1), one O(2), one O(6), and one O(8) atom to form LiO4 tetrahedra that share corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent Co(2)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, and  an edgeedge with one Li(1)O4 tetrahedra. The Li(3)-O(1) bond length is 2.02 Å. The Li(3)-O(2) bond length is 1.99 Å. The Li(3)-O(6) bond length is 2.14 Å. The Li(3)-O(8) bond length is 1.91 Å. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(3), one O(4), one O(5), and one O(7) atom to form CoO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, and  an edgeedge with one Co(2)O4 tetrahedra. The Co(1)-O(3) bond length is 1.88 Å. The Co(1)-O(4) bond length is 1.99 Å. The Co(1)-O(5) bond length is 1.99 Å. The Co(1)-O(7) bond length is 1.93 Å. In the second Co site, Co(2) is bonded to one O(2), one O(4), one O(5), and one O(6) atom to form CoO4 tetrahedra that share corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent Li(3)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, and  an edgeedge with one Co(1)O4 tetrahedra. The Co(2)-O(2) bond length is 1.82 Å. The Co(2)-O(4) bond length is 2.02 Å. The Co(2)-O(5) bond length is 1.96 Å. The Co(2)-O(6) bond length is 1.91 Å. There are two inequivalent Si sites. In the first Si site, 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 two equivalent Li(2)O4 tetrahedra, corners with two equivalent Li(3)O4 tetrahedra, corners with two equivalent Co(1)O4 tetrahedra, and corners with two equivalent Co(2)O4 tetrahedra. The Si(1)-O(1) bond length is 1.62 Å. The Si(1)-O(2) bond length is 1.67 Å. The Si(1)-O(3) bond length is 1.63 Å. The Si(1)-O(4) bond length is 1.71 Å. In the second Si site, Si(2) is bonded to one O(5), one O(6), one O(7), and one O(8) atom to form SiO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent Li(3)O4 tetrahedra, corners with two equivalent Co(1)O4 tetrahedra, and corners with two equivalent Co(2)O4 tetrahedra. The Si(2)-O(5) bond length is 1.69 Å. The Si(2)-O(6) bond length is 1.70 Å. The Si(2)-O(7) bond length is 1.67 Å. The Si(2)-O(8) bond length is 1.59 Å. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one Li(1), one Li(2), one Li(3), and one Si(1) atom to form distorted OLi3Si tetrahedra that share corners with two equivalent O(6)Li2CoSi tetrahedra, corners with two equivalent O(7)Li2CoSi tetrahedra, and corners with two equivalent O(4)LiCo2Si trigonal pyramids. In the second O site, O(2) is bonded in a trigonal planar geometry to one Li(3), one Co(2), and one Si(1) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Li(1), one Co(1), and one Si(1) atom. In the fourth O site, O(4) is bonded to one Li(2), one Co(1), one Co(2), and one Si(1) atom to form distorted OLiCo2Si trigonal pyramids that share corners with two equivalent O(6)Li2CoSi tetrahedra, corners with two equivalent O(7)Li2CoSi tetrahedra, and corners with two equivalent O(1)Li3Si tetrahedra. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Co(1), one Co(2), and one Si(2) atom. In the sixth O site, O(6) is bonded to one Li(2), one Li(3), one Co(2), and one Si(2) atom to form OLi2CoSi tetrahedra that share corners with two equivalent O(7)Li2CoSi tetrahedra, corners with two equivalent O(1)Li3Si tetrahedra, and corners with two equivalent O(4)LiCo2Si trigonal pyramids. In the seventh O site, O(7) is bonded to one Li(1), one Li(2), one Co(1), and one Si(2) atom to form OLi2CoSi tetrahedra that share corners with two equivalent O(6)Li2CoSi tetrahedra, corners with two equivalent O(1)Li3Si tetrahedra, and corners with two equivalent O(4)LiCo2Si trigonal pyramids. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Li(1), one Li(3), and one Si(2) atom.