LiSn2N3 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 Sn(1)N4 tetrahedra. Sn(1) is bonded to one N(2) and three equivalent N(1) atoms to form SnN4 tetrahedra that share corners with five equivalent Li(1)N4 tetrahedra and corners with seven equivalent Sn(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 Sn(1) atoms to form NLi2Sn2 tetrahedra that share corners with two equivalent N(2)Li2Sn2 tetrahedra and corners with ten equivalent N(1)LiSn3 tetrahedra. In the second N site, N(1) is bonded to one Li(1) and three equivalent Sn(1) atoms to form NLiSn3 tetrahedra that share corners with five equivalent N(2)Li2Sn2 tetrahedra and corners with seven equivalent N(1)LiSn3 tetrahedra.
LiSn2N3 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 Sn(1)N4 tetrahedra. Both Li(1)-N(1) bond lengths are 2.25 Å. There is one shorter (2.09 Å) and one longer (2.10 Å) Li(1)-N(2) bond length. Sn(1) is bonded to one N(2) and three equivalent N(1) atoms to form SnN4 tetrahedra that share corners with five equivalent Li(1)N4 tetrahedra and corners with seven equivalent Sn(1)N4 tetrahedra. The Sn(1)-N(2) bond length is 2.03 Å. There is one shorter (2.10 Å) and two longer (2.11 Å) Sn(1)-N(1) bond lengths. There are two inequivalent N sites. In the first N site, N(2) is bonded to two equivalent Li(1) and two equivalent Sn(1) atoms to form NLi2Sn2 tetrahedra that share corners with two equivalent N(2)Li2Sn2 tetrahedra and corners with ten equivalent N(1)LiSn3 tetrahedra. In the second N site, N(1) is bonded to one Li(1) and three equivalent Sn(1) atoms to form NLiSn3 tetrahedra that share corners with five equivalent N(2)Li2Sn2 tetrahedra and corners with seven equivalent N(1)LiSn3 tetrahedra.