ZnSiN2 is Enargite-like structured and crystallizes in the orthorhombic Pna2_1 space group. Zn(1) is bonded to two equivalent N(1) and two equivalent N(2) atoms to form ZnN4 tetrahedra that share corners with four equivalent Zn(1)N4 tetrahedra and corners with eight equivalent Si(1)N4 tetrahedra. Si(1) is bonded to two equivalent N(1) and two equivalent N(2) atoms to form SiN4 tetrahedra that share corners with four equivalent Si(1)N4 tetrahedra and corners with eight equivalent Zn(1)N4 tetrahedra. There are two inequivalent N sites. In the first N site, N(1) is bonded to two equivalent Zn(1) and two equivalent Si(1) atoms to form corner-sharing NZn2Si2 tetrahedra. In the second N site, N(2) is bonded to two equivalent Zn(1) and two equivalent Si(1) atoms to form corner-sharing NZn2Si2 tetrahedra.
ZnSiN2 is Enargite-like structured and crystallizes in the orthorhombic Pna2_1 space group. Zn(1) is bonded to two equivalent N(1) and two equivalent N(2) atoms to form ZnN4 tetrahedra that share corners with four equivalent Zn(1)N4 tetrahedra and corners with eight equivalent Si(1)N4 tetrahedra. There is one shorter (2.03 Å) and one longer (2.05 Å) Zn(1)-N(1) bond length. There is one shorter (2.05 Å) and one longer (2.06 Å) Zn(1)-N(2) bond length. Si(1) is bonded to two equivalent N(1) and two equivalent N(2) atoms to form SiN4 tetrahedra that share corners with four equivalent Si(1)N4 tetrahedra and corners with eight equivalent Zn(1)N4 tetrahedra. There is one shorter (1.73 Å) and one longer (1.75 Å) Si(1)-N(1) bond length. Both Si(1)-N(2) bond lengths are 1.75 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded to two equivalent Zn(1) and two equivalent Si(1) atoms to form corner-sharing NZn2Si2 tetrahedra. In the second N site, N(2) is bonded to two equivalent Zn(1) and two equivalent Si(1) atoms to form corner-sharing NZn2Si2 tetrahedra.