Ge3N4 crystallizes in the trigonal P31c space group. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one N(2), one N(3), and two equivalent N(1) atoms to form corner-sharing GeN4 tetrahedra. In the second Ge site, Ge(2) is bonded to one N(1), one N(4), and two equivalent N(2) atoms to form corner-sharing GeN4 tetrahedra. There are four inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one Ge(2) and two equivalent Ge(1) atoms. In the second N site, N(2) is bonded in a trigonal planar geometry to one Ge(1) and two equivalent Ge(2) atoms. In the third N site, N(3) is bonded in a trigonal planar geometry to three equivalent Ge(1) atoms. In the fourth N site, N(4) is bonded in a trigonal planar geometry to three equivalent Ge(2) atoms.
Ge3N4 crystallizes in the trigonal P31c space group. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one N(2), one N(3), and two equivalent N(1) atoms to form corner-sharing GeN4 tetrahedra. The Ge(1)-N(2) bond length is 1.84 Å. The Ge(1)-N(3) bond length is 1.84 Å. There is one shorter (1.83 Å) and one longer (1.85 Å) Ge(1)-N(1) bond length. In the second Ge site, Ge(2) is bonded to one N(1), one N(4), and two equivalent N(2) atoms to form corner-sharing GeN4 tetrahedra. The Ge(2)-N(1) bond length is 1.85 Å. The Ge(2)-N(4) bond length is 1.84 Å. There is one shorter (1.84 Å) and one longer (1.85 Å) Ge(2)-N(2) bond length. There are four inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one Ge(2) and two equivalent Ge(1) atoms. In the second N site, N(2) is bonded in a trigonal planar geometry to one Ge(1) and two equivalent Ge(2) atoms. In the third N site, N(3) is bonded in a trigonal planar geometry to three equivalent Ge(1) atoms. In the fourth N site, N(4) is bonded in a trigonal planar geometry to three equivalent Ge(2) atoms.