LiCr2(PO4)2 crystallizes in the monoclinic Pc space group. Li(1) is bonded in a trigonal non-coplanar geometry to one O(2), one O(6), and one O(7) atom. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(1), one O(2), one O(3), one O(4), and one O(5) atom to form CrO5 trigonal bipyramids that share  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, corners with two equivalent Cr(2)O5 trigonal bipyramids, and  an edgeedge with one P(1)O4 tetrahedra. In the second Cr site, Cr(2) is bonded to one O(1), one O(5), one O(6), one O(7), and one O(8) atom to form CrO5 trigonal bipyramids that share  a cornercorner with one P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, corners with two equivalent Cr(1)O5 trigonal bipyramids, and  an edgeedge with one P(2)O4 tetrahedra. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form PO4 tetrahedra that share  a cornercorner with one Cr(2)O5 trigonal bipyramid, corners with two equivalent Cr(1)O5 trigonal bipyramids, and  an edgeedge with one Cr(1)O5 trigonal bipyramid. In the second P site, P(2) is bonded to one O(5), one O(6), one O(7), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Cr(1)O5 trigonal bipyramid, corners with two equivalent Cr(2)O5 trigonal bipyramids, and  an edgeedge with one Cr(2)O5 trigonal bipyramid. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Cr(1), one Cr(2), and one P(1) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Li(1), one Cr(1), and one P(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Cr(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one Cr(1) and one P(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Cr(1), one Cr(2), and one P(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal non-coplanar geometry to one Li(1), one Cr(2), and one P(2) atom. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one Li(1), one Cr(2), and one P(2) atom. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one Cr(2) and one P(2) atom.
LiCr2(PO4)2 crystallizes in the monoclinic Pc space group. Li(1) is bonded in a trigonal non-coplanar geometry to one O(2), one O(6), and one O(7) atom. The Li(1)-O(2) bond length is 1.98 Å. The Li(1)-O(6) bond length is 2.04 Å. The Li(1)-O(7) bond length is 2.11 Å. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(1), one O(2), one O(3), one O(4), and one O(5) atom to form CrO5 trigonal bipyramids that share  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, corners with two equivalent Cr(2)O5 trigonal bipyramids, and  an edgeedge with one P(1)O4 tetrahedra. The Cr(1)-O(1) bond length is 2.05 Å. The Cr(1)-O(2) bond length is 2.03 Å. The Cr(1)-O(3) bond length is 1.98 Å. The Cr(1)-O(4) bond length is 2.15 Å. The Cr(1)-O(5) bond length is 2.00 Å. In the second Cr site, Cr(2) is bonded to one O(1), one O(5), one O(6), one O(7), and one O(8) atom to form CrO5 trigonal bipyramids that share  a cornercorner with one P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, corners with two equivalent Cr(1)O5 trigonal bipyramids, and  an edgeedge with one P(2)O4 tetrahedra. The Cr(2)-O(1) bond length is 2.07 Å. The Cr(2)-O(5) bond length is 2.16 Å. The Cr(2)-O(6) bond length is 2.14 Å. The Cr(2)-O(7) bond length is 2.09 Å. The Cr(2)-O(8) bond length is 2.10 Å. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form PO4 tetrahedra that share  a cornercorner with one Cr(2)O5 trigonal bipyramid, corners with two equivalent Cr(1)O5 trigonal bipyramids, and  an edgeedge with one Cr(1)O5 trigonal bipyramid. The P(1)-O(1) bond length is 1.60 Å. The P(1)-O(2) bond length is 1.57 Å. The P(1)-O(3) bond length is 1.53 Å. The P(1)-O(4) bond length is 1.52 Å. In the second P site, P(2) is bonded to one O(5), one O(6), one O(7), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Cr(1)O5 trigonal bipyramid, corners with two equivalent Cr(2)O5 trigonal bipyramids, and  an edgeedge with one Cr(2)O5 trigonal bipyramid. The P(2)-O(5) bond length is 1.61 Å. The P(2)-O(6) bond length is 1.57 Å. The P(2)-O(7) bond length is 1.56 Å. The P(2)-O(8) bond length is 1.54 Å. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Cr(1), one Cr(2), and one P(1) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Li(1), one Cr(1), and one P(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Cr(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one Cr(1) and one P(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Cr(1), one Cr(2), and one P(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal non-coplanar geometry to one Li(1), one Cr(2), and one P(2) atom. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one Li(1), one Cr(2), and one P(2) atom. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one Cr(2) and one P(2) atom.