ZnC4(N2O)4 crystallizes in the tetragonal I-42d space group. Zn(1) is bonded in a tetrahedral geometry to four equivalent N(1) atoms. There are two inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one C(2) and two equivalent O(1) atoms. In the second C site, C(2) is bonded in a distorted trigonal planar geometry to one C(1) and two equivalent N(1) atoms. There are two inequivalent N sites. In the first N site, N(1) is bonded in a distorted trigonal planar geometry to one Zn(1), one C(2), and one N(2) atom. In the second N site, N(2) is bonded in a water-like geometry to one N(1) and one N(2) atom. O(1) is bonded in a single-bond geometry to one C(1) atom.
ZnC4(N2O)4 crystallizes in the tetragonal I-42d space group. Zn(1) is bonded in a tetrahedral geometry to four equivalent N(1) atoms. All Zn(1)-N(1) bond lengths are 2.03 Å. There are two inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one C(2) and two equivalent O(1) atoms. The C(1)-C(2) bond length is 1.47 Å. Both C(1)-O(1) bond lengths are 1.26 Å. In the second C site, C(2) is bonded in a distorted trigonal planar geometry to one C(1) and two equivalent N(1) atoms. Both C(2)-N(1) bond lengths are 1.34 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded in a distorted trigonal planar geometry to one Zn(1), one C(2), and one N(2) atom. The N(1)-N(2) bond length is 1.36 Å. In the second N site, N(2) is bonded in a water-like geometry to one N(1) and one N(2) atom. The N(2)-N(2) bond length is 1.30 Å. O(1) is bonded in a single-bond geometry to one C(1) atom.