CuC6NH4O3(CH)3 crystallizes in the trigonal R-3 space group. The structure consists of fifty-four 02329_fluka molecules inside a CuC6NH4O3 framework. In the CuC6NH4O3 framework, Cu(1) is bonded to one N(1), one O(1), one O(2), and two equivalent O(3) atoms to form edge-sharing CuNO4 square pyramids. The Cu(1)-N(1) bond length is 1.93 Å. The Cu(1)-O(1) bond length is 1.94 Å. The Cu(1)-O(2) bond length is 2.26 Å. There is one shorter (1.95 Å) and one longer (1.99 Å) Cu(1)-O(3) bond length. There are six inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(2) atom. The C(1)-O(1) bond length is 1.27 Å. The C(1)-O(2) bond length is 1.23 Å. In the second C site, C(2) is bonded in a 3-coordinate geometry to one N(1) and two equivalent H(1,2) atoms. The C(2)-N(1) bond length is 1.46 Å. Both C(2)-H(1,2) bond lengths are 0.97 Å. In the third C site, C(3) is bonded in a distorted bent 120 degrees geometry to one C(4), one N(1), and one H(3) atom. The C(3)-C(4) bond length is 1.44 Å. The C(3)-N(1) bond length is 1.27 Å. The C(3)-H(3) bond length is 0.93 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one C(3), one C(5), and one C(9) atom. The C(4)-C(5) bond length is 1.41 Å. The C(4)-C(9) bond length is 1.42 Å. In the fifth C site, C(5) is bonded in a distorted single-bond geometry to one C(4) and one H(4) atom. The C(5)-H(4) bond length is 0.93 Å. In the sixth C site, C(9) is bonded in a distorted single-bond geometry to one C(4) and one O(3) atom. The C(9)-O(3) bond length is 1.34 Å. N(1) is bonded in a trigonal planar geometry to one Cu(1), one C(2), and one C(3) atom. There are three inequivalent H sites. In the first H site, H(1,2) is bonded in a single-bond geometry to one C(2) atom. In the second H site, H(3) is bonded in a single-bond geometry to one C(3) atom. In the third H site, H(4) is bonded in a single-bond geometry to one C(5) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Cu(1) and one C(1) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Cu(1) and one C(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to two equivalent Cu(1) and one C(9) atom. Linkers: 6 [O]C(=O)C/N=C/c1ccccc1[O]. Metal clusters: 6 [Cu]. The MOF has largest included sphere 5.43 A, density 1.63 g/cm3, surface area 3846.07 m2/g, accessible volume 0.21 cm3/g