Li2CrSiO4 is beta beryllia-derived 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 Cr(1)O4 tetrahedra, and corners with four equivalent Si(1)O4 tetrahedra. Cr(1) is bonded to one O(1), one O(2), and two equivalent O(3) atoms to form distorted CrO4 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 Cr(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 Cr(1), and one Si(1) atom to form distorted corner-sharing OLi2CrSi tetrahedra. In the second O site, O(2) is bonded to two equivalent Li(1), one Cr(1), and one Si(1) atom to form corner-sharing OLi2CrSi tetrahedra. In the third O site, O(3) is bonded to two equivalent Li(1), one Cr(1), and one Si(1) atom to form distorted corner-sharing OLi2CrSi trigonal pyramids.
Li2CrSiO4 is beta beryllia-derived 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 Cr(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 1.96 Å. Both Li(1)-O(3) bond lengths are 2.01 Å. Cr(1) is bonded to one O(1), one O(2), and two equivalent O(3) atoms to form distorted CrO4 tetrahedra that share corners with four equivalent Si(1)O4 tetrahedra and corners with eight equivalent Li(1)O4 tetrahedra. The Cr(1)-O(1) bond length is 2.18 Å. The Cr(1)-O(2) bond length is 2.16 Å. Both Cr(1)-O(3) bond lengths are 2.05 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 Cr(1)O4 tetrahedra and corners with eight equivalent Li(1)O4 tetrahedra. The Si(1)-O(1) bond length is 1.67 Å. The Si(1)-O(2) bond length is 1.65 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 to two equivalent Li(1), one Cr(1), and one Si(1) atom to form distorted corner-sharing OLi2CrSi tetrahedra. In the second O site, O(2) is bonded to two equivalent Li(1), one Cr(1), and one Si(1) atom to form corner-sharing OLi2CrSi tetrahedra. In the third O site, O(3) is bonded to two equivalent Li(1), one Cr(1), and one Si(1) atom to form distorted corner-sharing OLi2CrSi trigonal pyramids.