Cd3C4H8(N10Cl)2 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(4), one N(6), one N(9), and one Cl(1) atom to form corner-sharing CdN4Cl square pyramids. The corner-sharing octahedral tilt angles are 87°. The Cd(1)-N(1) bond length is 2.31 Å. The Cd(1)-N(4) bond length is 2.33 Å. The Cd(1)-N(6) bond length is 2.32 Å. The Cd(1)-N(9) bond length is 2.36 Å. The Cd(1)-Cl(1) bond length is 2.63 Å. In the second Cd site, Cd(2) is bonded to two equivalent N(3), two equivalent N(8), and two equivalent Cl(1) atoms to form corner-sharing CdN4Cl2 octahedra. Both Cd(2)-N(3) bond lengths are 2.34 Å. Both Cd(2)-N(8) bond lengths are 2.31 Å. Both Cd(2)-Cl(1) bond lengths are 2.66 Å. 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 1.33 Å. The C(1)-N(4) bond length is 1.33 Å. The C(1)-N(5) bond length is 1.36 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 1.34 Å. The C(2)-N(9) bond length is 1.33 Å. There are ten inequivalent N sites. In the first 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(2) bond length is 1.29 Å. The N(3)-N(4) bond length is 1.36 Å. In the second N site, N(4) is bonded in a distorted trigonal planar geometry to one Cd(1), one C(1), and one N(3) atom. In the third N site, N(5) is bonded in a distorted trigonal planar geometry to one C(1) and two equivalent H(1,2,3,4) atoms. Both N(5)-H(1,2,3,4) bond lengths are 0.88 Å. In the fourth N site, N(6) is bonded in a 3-coordinate geometry to one Cd(1), one C(2), and one N(7) atom. The N(6)-N(7) bond length is 1.34 Å. In the fifth N site, N(7) is bonded in a water-like geometry to one N(6) and one N(8) atom. The N(7)-N(8) bond length is 1.29 Å. In the sixth N site, N(8) is bonded in a distorted 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 seventh N site, N(9) is bonded in a distorted trigonal planar geometry to one Cd(1), one C(2), and one N(8) atom. In the eighth N site, N(10) is bonded in a distorted trigonal planar geometry to one C(2) and two equivalent H(1,2,3,4) atoms. Both N(10)-H(1,2,3,4) bond lengths are 0.88 Å. In the ninth N site, N(1) is bonded in a 3-coordinate geometry to one Cd(1), one C(1), and one N(2) atom. The N(1)-N(2) bond length is 1.35 Å. In the tenth N site, N(2) is bonded in a water-like geometry to one N(1) and one N(3) atom. H(1,2,3,4) is bonded in a single-bond geometry to one N(5) atom. Cl(1) is bonded in an L-shaped geometry to one Cd(1) and one Cd(2) atom. Linkers: 8 NC1=NN=N[N]1. Metal clusters: 2 Cl[Cd]1[N]N=[Cd]2(N=N1)N=N[Cd](Cl)N=N2. The MOF has largest included sphere 4.46 A, density 2.10 g/cm3, surface area 2847.88 m2/g, accessible volume 0.18 cm3/g