Cd2C2N10H5OBr crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded to one N(1), one N(6), one N(9), one O(1), and two equivalent Br(1) atoms to form CdBr2N3O octahedra that share corners with two equivalent Cd(2)N4O2 octahedra and  an edgeedge with one Cd(1)Br2N3O octahedra. The corner-sharing octahedral tilt angles range from 58-63°. The Cd(1)-N(1) bond length is 2.36 Å. The Cd(1)-N(6) bond length is 2.47 Å. The Cd(1)-N(9) bond length is 2.40 Å. The Cd(1)-O(1) bond length is 2.31 Å. There is one shorter (2.73 Å) and one longer (2.82 Å) Cd(1)-Br(1) bond length. In the second Cd site, Cd(2) is bonded to one N(3), one N(4), one N(7), one N(8), and two equivalent O(1) atoms to form CdN4O2 octahedra that share corners with two equivalent Cd(1)Br2N3O octahedra and corners with two equivalent Cd(2)N4O2 octahedra. The corner-sharing octahedral tilt angles range from 58-77°. The Cd(2)-N(3) bond length is 2.54 Å. The Cd(2)-N(4) bond length is 2.33 Å. The Cd(2)-N(7) bond length is 2.43 Å. The Cd(2)-N(8) bond length is 2.35 Å. There is one shorter (2.26 Å) and one longer (2.27 Å) Cd(2)-O(1) bond length. There are two inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one N(1), one N(4), and one N(5) atom. The C(1)-N(1) bond length is 1.35 Å. The C(1)-N(4) bond length is 1.34 Å. The C(1)-N(5) bond length is 1.38 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one N(10), one N(6), and one N(9) atom. The C(2)-N(10) bond length is 1.35 Å. The C(2)-N(6) bond length is 1.36 Å. The C(2)-N(9) bond length is 1.35 Å. There are ten inequivalent N sites. In the first N site, N(1) is bonded in a distorted trigonal planar geometry to one Cd(1), one C(1), 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(3) atom. The N(2)-N(3) bond length is 1.31 Å. In the third N site, N(3) is bonded in a distorted trigonal planar geometry to one Cd(2), one N(2), and one N(4) atom. The N(3)-N(4) bond length is 1.35 Å. In the fourth N site, N(4) is bonded in a distorted trigonal planar geometry to one Cd(2), one C(1), and one N(3) atom. In the fifth N site, N(5) is bonded in a trigonal non-coplanar geometry to one C(1), one H(2), and one H(3) atom. The N(5)-H(2) bond length is 1.02 Å. The N(5)-H(3) bond length is 1.02 Å. In the sixth N site, N(6) is bonded in a distorted single-bond geometry to one Cd(1), one C(2), and one N(7) atom. The N(6)-N(7) bond length is 1.35 Å. In the seventh N site, N(7) is bonded in a trigonal planar geometry to one Cd(2), one N(6), and one N(8) atom. The N(7)-N(8) bond length is 1.30 Å. In the eighth N site, N(8) is bonded in a trigonal planar geometry to one Cd(2), one N(7), and one N(9) atom. The N(8)-N(9) bond length is 1.35 Å. In the ninth N site, N(9) is bonded in a 3-coordinate geometry to one Cd(1), one C(2), and one N(8) atom. In the tenth N site, N(10) is bonded in a trigonal planar geometry to one C(2) and two equivalent H(4,5) atoms. Both N(10)-H(4,5) bond lengths are 1.02 Å. There are four inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(1) atom. The H(1)-O(1) bond length is 0.98 Å. In the second H site, H(2) is bonded in a single-bond geometry to one N(5) atom. In the third H site, H(3) is bonded in a single-bond geometry to one N(5) atom. In the fourth H site, H(4,5) is bonded in a single-bond geometry to one N(10) atom. O(1) is bonded in a distorted single-bond geometry to one Cd(1), two equivalent Cd(2), and one H(1) atom. Br(1) is bonded in an L-shaped geometry to two equivalent Cd(1) atoms. Linkers: 7 NC1=NN=N[N]1. Metal clusters: 8 [Cd]. The MOF has largest included sphere 2.40 A, density 3.13 g/cm3, surface area 2354.44 m2/g, accessible volume 0.08 cm3/g