Li2CrO3 is Enargite-like structured and crystallizes in the orthorhombic Cmc2_1 space group. Li(1) is bonded to one O(2) and three equivalent O(1) atoms to form LiO4 tetrahedra that share corners with five equivalent Cr(1)O4 tetrahedra and corners with seven equivalent Li(1)O4 tetrahedra. Cr(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form CrO4 tetrahedra that share corners with two equivalent Cr(1)O4 tetrahedra and corners with ten equivalent Li(1)O4 tetrahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded to three equivalent Li(1) and one Cr(1) atom to form OLi3Cr tetrahedra that share corners with five equivalent O(2)Li2Cr2 tetrahedra and corners with seven equivalent O(1)Li3Cr tetrahedra. In the second O site, O(2) is bonded to two equivalent Li(1) and two equivalent Cr(1) atoms to form OLi2Cr2 tetrahedra that share corners with two equivalent O(2)Li2Cr2 tetrahedra and corners with ten equivalent O(1)Li3Cr tetrahedra.
Li2CrO3 is Enargite-like structured and crystallizes in the orthorhombic Cmc2_1 space group. Li(1) is bonded to one O(2) and three equivalent O(1) atoms to form LiO4 tetrahedra that share corners with five equivalent Cr(1)O4 tetrahedra and corners with seven equivalent Li(1)O4 tetrahedra. The Li(1)-O(2) bond length is 2.08 Å. There are two shorter (1.98 Å) and one longer (2.00 Å) Li(1)-O(1) bond length. Cr(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form CrO4 tetrahedra that share corners with two equivalent Cr(1)O4 tetrahedra and corners with ten equivalent Li(1)O4 tetrahedra. Both Cr(1)-O(1) bond lengths are 1.75 Å. There is one shorter (1.87 Å) and one longer (1.88 Å) Cr(1)-O(2) bond length. There are two inequivalent O sites. In the first O site, O(1) is bonded to three equivalent Li(1) and one Cr(1) atom to form OLi3Cr tetrahedra that share corners with five equivalent O(2)Li2Cr2 tetrahedra and corners with seven equivalent O(1)Li3Cr tetrahedra. In the second O site, O(2) is bonded to two equivalent Li(1) and two equivalent Cr(1) atoms to form OLi2Cr2 tetrahedra that share corners with two equivalent O(2)Li2Cr2 tetrahedra and corners with ten equivalent O(1)Li3Cr tetrahedra.