Cu2C7NH3O4I crystallizes in the tetragonal P4/nmm space group. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 1-coordinate geometry to one N(1) and three equivalent I(1) atoms. The Cu(1)-N(1) bond length is 2.04 Å. There is one shorter (2.65 Å) and two longer (2.73 Å) Cu(1)-I(1) bond lengths. In the second Cu site, Cu(2) is bonded in a distorted rectangular see-saw-like geometry to two equivalent O(1) and two equivalent O(2) atoms. Both Cu(2)-O(1) bond lengths are 1.96 Å. Both Cu(2)-O(2) bond lengths are 1.96 Å. There are four inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one C(2), one N(1), and one H(1) atom. The C(1)-C(2) bond length is 1.38 Å. The C(1)-N(1) bond length is 1.34 Å. The C(1)-H(1) bond length is 0.93 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(1), one C(3), and one C(4) atom. The C(2)-C(3) bond length is 1.51 Å. The C(2)-C(4) bond length is 1.38 Å. In the third C site, C(3) is bonded in a bent 120 degrees geometry to one C(2), one O(1), and one O(2) atom. The C(3)-O(1) bond length is 1.24 Å. The C(3)-O(2) bond length is 1.25 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to two equivalent C(2) and one H(2) atom. The C(4)-H(2) bond length is 0.93 Å. N(1) is bonded in a trigonal planar geometry to one Cu(1) and two equivalent C(1) atoms. There are two inequivalent H sites. In the first H site, H(2) is bonded in a single-bond geometry to one C(4) atom. In the second H site, H(1) is bonded in a single-bond geometry to one C(1) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Cu(2) and one C(3) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Cu(2) and one C(3) atom. I(1) is bonded in a 3-coordinate geometry to three equivalent Cu(1) atoms. Linkers: 8 [O]C(=O)c1cncc(C([O])=O)c1. Metal clusters: 2 I[Cu@]12[Cu@]3(I)[Cu@@]1(I)[Cu@]23I ,4 [C]1O[Cu]234O[C]O[Cu]2(O1)(O[C]O3)O[C]O4. The MOF has largest included sphere 10.80 A, density 1.37 g/cm3, surface area 2422.61 m2/g, accessible volume 0.50 cm3/g