Cu12C58N32H32Cl crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to four equivalent N(1) and one Cl(1) atom to form corner-sharing CuN4Cl square pyramids. All Cu(1)-N(1) bond lengths are 2.04 Å. The Cu(1)-Cl(1) bond length is 2.54 Å. In the second Cu site, Cu(2) is bonded in an L-shaped geometry to two equivalent N(2) atoms. Both Cu(2)-N(2) bond lengths are 2.20 Å. There are six inequivalent C sites. In the first C site, C(2) is bonded in a distorted single-bond geometry to one C(1), one C(5), and one H(2) atom. The C(2)-C(1) bond length is 1.38 Å. The C(2)-C(5) bond length is 1.38 Å. The C(2)-H(2) bond length is 0.93 Å. In the second C site, C(4) is bonded in a trigonal planar geometry to one C(3) and two equivalent C(1) atoms. The C(4)-C(3) bond length is 1.47 Å. Both C(4)-C(1) bond lengths are 1.38 Å. In the third C site, C(6) is bonded in a tetrahedral geometry to four equivalent C(5) atoms. All C(6)-C(5) bond lengths are 1.54 Å. In the fourth C site, C(5) is bonded in a trigonal planar geometry to one C(6) and two equivalent C(2) atoms. In the fifth C site, C(1) is bonded in a distorted trigonal planar geometry to one C(2), one C(4), and one H(1) atom. The C(1)-H(1) bond length is 0.93 Å. In the sixth C site, C(3) is bonded in a distorted bent 120 degrees geometry to one C(4) and two equivalent N(2) atoms. Both C(3)-N(2) 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 Cu(1), one N(1), and one N(2) atom. The N(1)-N(1) bond length is 1.32 Å. The N(1)-N(2) bond length is 1.33 Å. In the second N site, N(2) is bonded in a distorted trigonal planar geometry to one Cu(2), one C(3), and one N(1) atom. There are two inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(2) atom. Cl(1) is bonded in a square co-planar geometry to four equivalent Cu(1) atoms. Linkers: 1 c1cc(C(c2ccc(C3=NN=N[N]3)cc2)(c2ccc(C3=NN=N[N]3)cc2)c2ccc(C3=NN=N[N]3)cc2)ccc1C1=NN=N[N]1 ,1 c1cc(C(c2ccc(C3=NN=N[N]3)cc2)(c2ccc(C3=N[N]N=N3)cc2)c2ccc(C3=N[N]N=N3)cc2)ccc1C1=NN=N[N]1. Metal clusters: 1 Cl[Cu]123N4[N][Cu][N]N1N1[N][Cu][N]N5N6[N][Cu][N]N7N8[N][Cu][N]N4[Cu]84N8[N][Cu][N]N4N2[N][Cu][N]N3N2[N][Cu][N]N(N3[N][Cu][N]N8[Cu]763)[Cu]512. The MOF has largest included sphere 11.04 A, density 0.93 g/cm3, surface area 3079.27 m2/g, accessible volume 0.69 cm3/g