Co(C4N3)2 crystallizes in the orthorhombic Pmna space group. Co(1) is bonded in an octahedral geometry to two equivalent N(2) and four equivalent N(1) atoms. There are three inequivalent C sites. In the first C site, C(1) is bonded in a distorted linear geometry to one C(2) and one N(2) atom. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(1) and two equivalent C(3) atoms. In the third C site, C(3) is bonded in a distorted linear geometry to one C(2) and one N(1) atom. There are two inequivalent N sites. In the first N site, N(1) is bonded in a linear geometry to one Co(1) and one C(3) atom. In the second N site, N(2) is bonded in a distorted bent 150 degrees geometry to one Co(1) and one C(1) atom.
Co(C4N3)2 crystallizes in the orthorhombic Pmna space group. Co(1) is bonded in an octahedral geometry to two equivalent N(2) and four equivalent N(1) atoms. Both Co(1)-N(2) bond lengths are 2.37 Å. All Co(1)-N(1) bond lengths are 1.87 Å. There are three inequivalent C sites. In the first C site, C(1) is bonded in a distorted linear geometry to one C(2) and one N(2) atom. The C(1)-C(2) bond length is 1.41 Å. The C(1)-N(2) bond length is 1.17 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(1) and two equivalent C(3) atoms. Both C(2)-C(3) bond lengths are 1.40 Å. In the third C site, C(3) is bonded in a distorted linear geometry to one C(2) and one N(1) atom. The C(3)-N(1) bond length is 1.17 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded in a linear geometry to one Co(1) and one C(3) atom. In the second N site, N(2) is bonded in a distorted bent 150 degrees geometry to one Co(1) and one C(1) atom.