NiGeN2 is Enargite-like structured and crystallizes in the orthorhombic Pna2_1 space group. Ni(1) is bonded to two equivalent N(1) and two equivalent N(2) atoms to form NiN4 tetrahedra that share corners with four equivalent Ni(1)N4 tetrahedra and corners with eight equivalent Ge(1)N4 tetrahedra. Ge(1) is bonded to two equivalent N(1) and two equivalent N(2) atoms to form GeN4 tetrahedra that share corners with four equivalent Ge(1)N4 tetrahedra and corners with eight equivalent Ni(1)N4 tetrahedra. There are two inequivalent N sites. In the first N site, N(1) is bonded to two equivalent Ni(1) and two equivalent Ge(1) atoms to form corner-sharing NNi2Ge2 tetrahedra. In the second N site, N(2) is bonded to two equivalent Ni(1) and two equivalent Ge(1) atoms to form corner-sharing NNi2Ge2 tetrahedra.
NiGeN2 is Enargite-like structured and crystallizes in the orthorhombic Pna2_1 space group. Ni(1) is bonded to two equivalent N(1) and two equivalent N(2) atoms to form NiN4 tetrahedra that share corners with four equivalent Ni(1)N4 tetrahedra and corners with eight equivalent Ge(1)N4 tetrahedra. There is one shorter (1.99 Å) and one longer (2.02 Å) Ni(1)-N(1) bond length. There is one shorter (1.99 Å) and one longer (2.00 Å) Ni(1)-N(2) bond length. Ge(1) is bonded to two equivalent N(1) and two equivalent N(2) atoms to form GeN4 tetrahedra that share corners with four equivalent Ge(1)N4 tetrahedra and corners with eight equivalent Ni(1)N4 tetrahedra. There is one shorter (1.87 Å) and one longer (1.88 Å) Ge(1)-N(1) bond length. There is one shorter (1.87 Å) and one longer (1.88 Å) Ge(1)-N(2) bond length. There are two inequivalent N sites. In the first N site, N(1) is bonded to two equivalent Ni(1) and two equivalent Ge(1) atoms to form corner-sharing NNi2Ge2 tetrahedra. In the second N site, N(2) is bonded to two equivalent Ni(1) and two equivalent Ge(1) atoms to form corner-sharing NNi2Ge2 tetrahedra.