Ge3N4 is Hausmannite-like structured and crystallizes in the orthorhombic Pnma space group. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one N(1), one N(3), and two equivalent N(2) atoms to form a mixture of distorted corner and edge-sharing GeN4 trigonal pyramids. The corner-sharing octahedral tilt angles range from 64-68°. In the second Ge site, Ge(2) is bonded to one N(1), one N(3), and four equivalent N(2) atoms to form distorted GeN6 octahedra that share corners with four equivalent Ge(2)N6 octahedra, corners with four equivalent Ge(3)N6 octahedra, corners with four equivalent Ge(1)N4 trigonal pyramids, edges with two equivalent Ge(3)N6 octahedra, and  an edgeedge with one Ge(1)N4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 49-55°. In the third Ge site, Ge(3) is bonded to two equivalent N(1), two equivalent N(2), and two equivalent N(3) atoms to form GeN6 octahedra that share corners with four equivalent Ge(2)N6 octahedra, corners with two equivalent Ge(1)N4 trigonal pyramids, edges with two equivalent Ge(2)N6 octahedra, edges with two equivalent Ge(3)N6 octahedra, and edges with two equivalent Ge(1)N4 trigonal pyramids. The corner-sharing octahedral tilt angles range from 50-55°. There are three inequivalent N sites. In the first N site, N(1) is bonded to one Ge(1), one Ge(2), and two equivalent Ge(3) atoms to form corner-sharing NGe4 tetrahedra. In the second N site, N(2) is bonded in a rectangular see-saw-like geometry to one Ge(1), one Ge(3), and two equivalent Ge(2) atoms. In the third N site, N(3) is bonded in a rectangular see-saw-like geometry to one Ge(1), one Ge(2), and two equivalent Ge(3) atoms.
Ge3N4 is Hausmannite-like structured and crystallizes in the orthorhombic Pnma space group. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one N(1), one N(3), and two equivalent N(2) atoms to form a mixture of distorted corner and edge-sharing GeN4 trigonal pyramids. The corner-sharing octahedral tilt angles range from 64-68°. The Ge(1)-N(1) bond length is 1.82 Å. The Ge(1)-N(3) bond length is 1.91 Å. Both Ge(1)-N(2) bond lengths are 1.86 Å. In the second Ge site, Ge(2) is bonded to one N(1), one N(3), and four equivalent N(2) atoms to form distorted GeN6 octahedra that share corners with four equivalent Ge(2)N6 octahedra, corners with four equivalent Ge(3)N6 octahedra, corners with four equivalent Ge(1)N4 trigonal pyramids, edges with two equivalent Ge(3)N6 octahedra, and  an edgeedge with one Ge(1)N4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 49-55°. The Ge(2)-N(1) bond length is 2.04 Å. The Ge(2)-N(3) bond length is 1.98 Å. There are two shorter (1.98 Å) and two longer (2.30 Å) Ge(2)-N(2) bond lengths. In the third Ge site, Ge(3) is bonded to two equivalent N(1), two equivalent N(2), and two equivalent N(3) atoms to form GeN6 octahedra that share corners with four equivalent Ge(2)N6 octahedra, corners with two equivalent Ge(1)N4 trigonal pyramids, edges with two equivalent Ge(2)N6 octahedra, edges with two equivalent Ge(3)N6 octahedra, and edges with two equivalent Ge(1)N4 trigonal pyramids. The corner-sharing octahedral tilt angles range from 50-55°. Both Ge(3)-N(1) bond lengths are 1.97 Å. Both Ge(3)-N(2) bond lengths are 2.07 Å. Both Ge(3)-N(3) bond lengths are 2.07 Å. There are three inequivalent N sites. In the first N site, N(1) is bonded to one Ge(1), one Ge(2), and two equivalent Ge(3) atoms to form corner-sharing NGe4 tetrahedra. In the second N site, N(2) is bonded in a rectangular see-saw-like geometry to one Ge(1), one Ge(3), and two equivalent Ge(2) atoms. In the third N site, N(3) is bonded in a rectangular see-saw-like geometry to one Ge(1), one Ge(2), and two equivalent Ge(3) atoms.