CoZn2N2 crystallizes in the monoclinic C2/m space group. Co(1) is bonded in a distorted trigonal planar geometry to one N(1) and two equivalent N(2) atoms. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 3-coordinate geometry to one N(2) and two equivalent N(1) atoms. In the second Zn site, Zn(2) is bonded to two equivalent N(1) and two equivalent N(2) atoms to form a mixture of corner and edge-sharing ZnN4 trigonal pyramids. There are two inequivalent N sites. In the first N site, N(1) is bonded to one Co(1), two equivalent Zn(1), and two equivalent Zn(2) atoms to form distorted NZn4Co trigonal bipyramids that share corners with two equivalent N(1)Zn4Co trigonal bipyramids, corners with four equivalent N(2)Zn3Co2 trigonal bipyramids,  an edgeedge with one N(1)Zn4Co trigonal bipyramid, and edges with two equivalent N(2)Zn3Co2 trigonal bipyramids. In the second N site, N(2) is bonded to two equivalent Co(1), one Zn(1), and two equivalent Zn(2) atoms to form NZn3Co2 trigonal bipyramids that share corners with two equivalent N(2)Zn3Co2 trigonal bipyramids, corners with four equivalent N(1)Zn4Co trigonal bipyramids,  an edgeedge with one N(2)Zn3Co2 trigonal bipyramid, and edges with two equivalent N(1)Zn4Co trigonal bipyramids.
CoZn2N2 crystallizes in the monoclinic C2/m space group. Co(1) is bonded in a distorted trigonal planar geometry to one N(1) and two equivalent N(2) atoms. The Co(1)-N(1) bond length is 1.87 Å. There is one shorter (1.83 Å) and one longer (1.84 Å) Co(1)-N(2) bond length. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 3-coordinate geometry to one N(2) and two equivalent N(1) atoms. The Zn(1)-N(2) bond length is 2.19 Å. Both Zn(1)-N(1) bond lengths are 1.98 Å. In the second Zn site, Zn(2) is bonded to two equivalent N(1) and two equivalent N(2) atoms to form a mixture of corner and edge-sharing ZnN4 trigonal pyramids. There is one shorter (1.99 Å) and one longer (2.43 Å) Zn(2)-N(1) bond length. Both Zn(2)-N(2) bond lengths are 2.05 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded to one Co(1), two equivalent Zn(1), and two equivalent Zn(2) atoms to form distorted NZn4Co trigonal bipyramids that share corners with two equivalent N(1)Zn4Co trigonal bipyramids, corners with four equivalent N(2)Zn3Co2 trigonal bipyramids,  an edgeedge with one N(1)Zn4Co trigonal bipyramid, and edges with two equivalent N(2)Zn3Co2 trigonal bipyramids. In the second N site, N(2) is bonded to two equivalent Co(1), one Zn(1), and two equivalent Zn(2) atoms to form NZn3Co2 trigonal bipyramids that share corners with two equivalent N(2)Zn3Co2 trigonal bipyramids, corners with four equivalent N(1)Zn4Co trigonal bipyramids,  an edgeedge with one N(2)Zn3Co2 trigonal bipyramid, and edges with two equivalent N(1)Zn4Co trigonal bipyramids.