Cu2C11N3H6O7NH2 crystallizes in the monoclinic P2_1/c space group. The structure consists of four ammonia molecules inside a Cu2C11N3H6O7 framework. In the Cu2C11N3H6O7 framework, there are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one N(1), one O(1), one O(3), one O(4), and one O(7) atom to form corner-sharing CuNO4 trigonal bipyramids. The Cu(1)-N(1) bond length is 2.03 Å. The Cu(1)-O(1) bond length is 1.94 Å. The Cu(1)-O(3) bond length is 1.96 Å. The Cu(1)-O(4) bond length is 2.25 Å. The Cu(1)-O(7) bond length is 1.94 Å. In the second Cu site, Cu(2) is bonded to one N(2), one O(2), one O(5), and two equivalent O(1) atoms to form a mixture of edge and corner-sharing CuNO4 trigonal bipyramids. The Cu(2)-N(2) bond length is 2.04 Å. The Cu(2)-O(2) bond length is 1.93 Å. The Cu(2)-O(5) bond length is 2.12 Å. There is one shorter (1.94 Å) and one longer (2.05 Å) Cu(2)-O(1) bond length. There are eleven inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(2), and one O(3) atom. The C(1)-C(2) bond length is 1.50 Å. The C(1)-O(2) bond length is 1.25 Å. The C(1)-O(3) bond length is 1.24 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(9) atom. The C(2)-C(3) bond length is 1.39 Å. The C(2)-C(9) bond length is 1.39 Å. In the third C site, C(3) is bonded in a single-bond geometry to one C(2) and one H(2) atom. The C(3)-H(2) bond length is 0.93 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to one C(5) and one H(5) atom. The C(4)-C(5) bond length is 1.40 Å. The C(4)-H(5) bond length is 0.93 Å. In the fifth C site, C(5) is bonded in a trigonal planar geometry to one C(4), one C(6), and one C(7) atom. The C(5)-C(6) bond length is 1.50 Å. The C(5)-C(7) bond length is 1.39 Å. In the sixth C site, C(6) is bonded in a bent 120 degrees geometry to one C(5), one O(6), and one O(7) atom. The C(6)-O(6) bond length is 1.24 Å. The C(6)-O(7) bond length is 1.28 Å. In the seventh C site, C(7) is bonded in a trigonal planar geometry to one C(5), one C(8), and one C(9) atom. The C(7)-C(8) bond length is 1.52 Å. The C(7)-C(9) bond length is 1.39 Å. In the eighth C site, C(8) is bonded in a distorted bent 120 degrees geometry to one C(7), one O(4), and one O(5) atom. The C(8)-O(4) bond length is 1.24 Å. The C(8)-O(5) bond length is 1.27 Å. In the ninth C site, C(9) is bonded in a distorted single-bond geometry to one C(2), one C(7), and one H(6) atom. The C(9)-H(6) bond length is 0.93 Å. In the tenth C site, C(10) is bonded in a trigonal planar geometry to one N(2), one N(3), and one H(7) atom. The C(10)-N(2) bond length is 1.30 Å. The C(10)-N(3) bond length is 1.34 Å. The C(10)-H(7) bond length is 0.93 Å. In the eleventh C site, C(11) is bonded in a trigonal planar geometry to one N(1), one N(3), and one H(8) atom. The C(11)-N(1) bond length is 1.31 Å. The C(11)-N(3) bond length is 1.35 Å. The C(11)-H(8) bond length is 0.93 Å. There are three inequivalent N sites. In the first N site, N(1) is bonded in a distorted trigonal planar geometry to one Cu(1), one C(11), and one N(2) atom. The N(1)-N(2) bond length is 1.38 Å. In the second N site, N(2) is bonded in a distorted trigonal planar geometry to one Cu(2), one C(10), and one N(1) atom. In the third N site, N(3) is bonded in a distorted water-like geometry to one C(10) and one C(11) atom. There are six 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 C(3) atom. In the third H site, H(5) is bonded in a single-bond geometry to one C(4) atom. In the fourth H site, H(6) is bonded in a single-bond geometry to one C(9) atom. In the fifth H site, H(7) is bonded in a single-bond geometry to one C(10) atom. In the sixth H site, H(8) is bonded in a single-bond geometry to one C(11) atom. There are seven inequivalent O sites. In the first O site, O(1) is bonded to one Cu(1), two equivalent Cu(2), and one H(1) atom to form distorted edge-sharing OCu3H tetrahedra. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Cu(2) and one C(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Cu(1) and one C(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Cu(1) and one C(8) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Cu(2) and one C(8) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one C(6) atom. In the seventh O site, O(7) is bonded in a bent 120 degrees geometry to one Cu(1) and one C(6) atom. Linkers: 4 [O]C(=O)c1ccc(C([O])=O)c(C([O])=O)c1 ,4 Nn1cnnc1. Metal clusters: 2 O=[C]O[Cu@]12[N][N][Cu@@]3(O)O[C]O[Cu@](O[C]=O)([N][N][Cu@@](O)(O[C]O1)O[C]O2)O[C]O3. The MOF has largest included sphere 5.03 A, density 1.65 g/cm3, surface area 3346.44 m2/g, accessible volume 0.24 cm3/g