CoSnN2 is Enargite-like structured and crystallizes in the orthorhombic Pna2_1 space group. Co(1) is bonded to two equivalent N(1) and two equivalent N(2) atoms to form CoN4 tetrahedra that share corners with four equivalent Co(1)N4 tetrahedra and corners with eight equivalent Sn(1)N4 tetrahedra. Sn(1) is bonded to two equivalent N(1) and two equivalent N(2) atoms to form SnN4 tetrahedra that share corners with four equivalent Sn(1)N4 tetrahedra and corners with eight equivalent Co(1)N4 tetrahedra. There are two inequivalent N sites. In the first N site, N(1) is bonded to two equivalent Co(1) and two equivalent Sn(1) atoms to form corner-sharing NCo2Sn2 tetrahedra. In the second N site, N(2) is bonded to two equivalent Co(1) and two equivalent Sn(1) atoms to form distorted corner-sharing NCo2Sn2 tetrahedra.
CoSnN2 is Enargite-like structured and crystallizes in the orthorhombic Pna2_1 space group. Co(1) is bonded to two equivalent N(1) and two equivalent N(2) atoms to form CoN4 tetrahedra that share corners with four equivalent Co(1)N4 tetrahedra and corners with eight equivalent Sn(1)N4 tetrahedra. Both Co(1)-N(1) bond lengths are 1.89 Å. Both Co(1)-N(2) bond lengths are 1.90 Å. Sn(1) is bonded to two equivalent N(1) and two equivalent N(2) atoms to form SnN4 tetrahedra that share corners with four equivalent Sn(1)N4 tetrahedra and corners with eight equivalent Co(1)N4 tetrahedra. There is one shorter (2.23 Å) and one longer (2.25 Å) Sn(1)-N(1) bond length. There is one shorter (2.20 Å) and one longer (2.25 Å) Sn(1)-N(2) bond length. There are two inequivalent N sites. In the first N site, N(1) is bonded to two equivalent Co(1) and two equivalent Sn(1) atoms to form corner-sharing NCo2Sn2 tetrahedra. In the second N site, N(2) is bonded to two equivalent Co(1) and two equivalent Sn(1) atoms to form distorted corner-sharing NCo2Sn2 tetrahedra.