Cu2C2N7H2 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one N(1), one N(2), one N(5), and one N(7) atom to form distorted corner-sharing CuN4 trigonal pyramids. The Cu(1)-N(1) bond length is 1.93 Å. The Cu(1)-N(2) bond length is 1.92 Å. The Cu(1)-N(5) bond length is 2.38 Å. The Cu(1)-N(7) bond length is 2.15 Å. In the second Cu site, Cu(2) is bonded to one N(2), one N(4), one N(5), and one N(7) atom to form corner-sharing CuN4 tetrahedra. The Cu(2)-N(2) bond length is 2.05 Å. The Cu(2)-N(4) bond length is 1.95 Å. The Cu(2)-N(5) bond length is 2.00 Å. The Cu(2)-N(7) bond length is 2.03 Å. There are two inequivalent C sites. In the first C site, C(1) is bonded in a distorted trigonal planar geometry to one C(2), one N(1), and one H(1) atom. The C(1)-C(2) bond length is 1.39 Å. The C(1)-N(1) bond length is 1.35 Å. The C(1)-H(1) bond length is 1.09 Å. In the second C site, C(2) is bonded in a distorted trigonal planar geometry to one C(1), one N(1), and one H(2) atom. The C(2)-N(1) bond length is 1.35 Å. The C(2)-H(2) bond length is 1.09 Å. There are seven inequivalent N sites. In the first N site, N(3) is bonded in a linear geometry to one N(2) and one N(4) atom. The N(3)-N(2) bond length is 1.20 Å. The N(3)-N(4) bond length is 1.18 Å. In the second N site, N(4) is bonded in a bent 150 degrees geometry to one Cu(2) and one N(3) atom. In the third N site, N(5) is bonded in a distorted trigonal planar geometry to one Cu(1), one Cu(2), and one N(6) atom. The N(5)-N(6) bond length is 1.19 Å. In the fourth N site, N(6) is bonded in a linear geometry to one N(5) and one N(7) atom. The N(6)-N(7) bond length is 1.20 Å. In the fifth N site, N(7) is bonded in a trigonal planar geometry to one Cu(1), one Cu(2), and one N(6) atom. In the sixth N site, N(1) is bonded in a trigonal planar geometry to one Cu(1), one C(1), and one C(2) atom. In the seventh N site, N(2) is bonded in a distorted trigonal planar geometry to one Cu(1), one Cu(2), and one N(3) 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. Linkers: 2 c1cnccn1. Metal clusters: 8 [Cu]. The MOF has largest included sphere 1.47 A, density 2.91 g/cm3, surface area 2616.41 m2/g, accessible volume 0.05 cm3/g