LiCr2N3 is Enargite-like structured and crystallizes in the orthorhombic Cmc2_1 space group. Li(1) is bonded to two equivalent N(1) and two equivalent N(2) atoms to form LiN4 tetrahedra that share corners with two equivalent Li(1)N4 tetrahedra and corners with ten equivalent Cr(1)N4 tetrahedra. Cr(1) is bonded to one N(2) and three equivalent N(1) atoms to form CrN4 tetrahedra that share corners with five equivalent Li(1)N4 tetrahedra and corners with seven equivalent Cr(1)N4 tetrahedra. There are two inequivalent N sites. In the first N site, N(2) is bonded to two equivalent Li(1) and two equivalent Cr(1) atoms to form NLi2Cr2 tetrahedra that share corners with two equivalent N(2)Li2Cr2 tetrahedra and corners with ten equivalent N(1)LiCr3 tetrahedra. In the second N site, N(1) is bonded to one Li(1) and three equivalent Cr(1) atoms to form NLiCr3 tetrahedra that share corners with five equivalent N(2)Li2Cr2 tetrahedra and corners with seven equivalent N(1)LiCr3 tetrahedra.
LiCr2N3 is Enargite-like structured and crystallizes in the orthorhombic Cmc2_1 space group. Li(1) is bonded to two equivalent N(1) and two equivalent N(2) atoms to form LiN4 tetrahedra that share corners with two equivalent Li(1)N4 tetrahedra and corners with ten equivalent Cr(1)N4 tetrahedra. Both Li(1)-N(1) bond lengths are 2.18 Å. There is one shorter (2.10 Å) and one longer (2.14 Å) Li(1)-N(2) bond length. Cr(1) is bonded to one N(2) and three equivalent N(1) atoms to form CrN4 tetrahedra that share corners with five equivalent Li(1)N4 tetrahedra and corners with seven equivalent Cr(1)N4 tetrahedra. The Cr(1)-N(2) bond length is 1.80 Å. There are a spread of Cr(1)-N(1) bond distances ranging from 1.87-1.89 Å. There are two inequivalent N sites. In the first N site, N(2) is bonded to two equivalent Li(1) and two equivalent Cr(1) atoms to form NLi2Cr2 tetrahedra that share corners with two equivalent N(2)Li2Cr2 tetrahedra and corners with ten equivalent N(1)LiCr3 tetrahedra. In the second N site, N(1) is bonded to one Li(1) and three equivalent Cr(1) atoms to form NLiCr3 tetrahedra that share corners with five equivalent N(2)Li2Cr2 tetrahedra and corners with seven equivalent N(1)LiCr3 tetrahedra.