CuC12N2H8O4Cl crystallizes in the monoclinic Pc space group. Cu(1) is bonded to one N(1), one N(2), and two equivalent Cl(1) atoms to form distorted corner-sharing CuN2Cl2 tetrahedra. The Cu(1)-N(1) bond length is 2.03 Å. The Cu(1)-N(2) bond length is 2.03 Å. There is one shorter (2.29 Å) and one longer (2.32 Å) Cu(1)-Cl(1) bond length. There are twelve 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(3) atom. The C(1)-C(2) bond length is 1.40 Å. The C(1)-N(1) bond length is 1.34 Å. The C(1)-H(3) bond length is 1.09 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(1), one C(11), and one C(3) atom. The C(2)-C(11) bond length is 1.48 Å. The C(2)-C(3) bond length is 1.40 Å. In the third C site, C(3) is bonded in a distorted trigonal planar geometry to one C(2), one C(4), and one H(4) atom. The C(3)-C(4) bond length is 1.39 Å. The C(3)-H(4) bond length is 1.09 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to one C(3), 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 1.09 Å. In the fifth C site, C(5) is bonded in a distorted trigonal planar geometry to one C(4), one C(6), and one N(1) atom. The C(5)-C(6) bond length is 1.47 Å. The C(5)-N(1) bond length is 1.37 Å. In the sixth C site, C(6) is bonded in a distorted trigonal planar geometry to one C(5), one C(7), and one N(2) atom. The C(6)-C(7) bond length is 1.40 Å. The C(6)-N(2) bond length is 1.36 Å. In the seventh C site, C(7) is bonded in a distorted single-bond geometry to one C(6) and one H(6) atom. The C(7)-H(6) bond length is 1.09 Å. In the eighth C site, C(8) is bonded in a distorted single-bond geometry to one C(9) and one H(7) atom. The C(8)-C(9) bond length is 1.40 Å. The C(8)-H(7) bond length is 1.09 Å. In the ninth C site, C(9) is bonded in a trigonal planar geometry to one C(10), one C(12), and one C(8) atom. The C(9)-C(10) bond length is 1.40 Å. The C(9)-C(12) bond length is 1.49 Å. In the tenth C site, C(10) is bonded in a distorted trigonal planar geometry to one C(9), one N(2), and one H(8) atom. The C(10)-N(2) bond length is 1.34 Å. The C(10)-H(8) bond length is 1.09 Å. In the eleventh C site, C(11) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(1), and one O(2) atom. The C(11)-O(1) bond length is 1.24 Å. The C(11)-O(2) bond length is 1.33 Å. In the twelfth C site, C(12) is bonded in a distorted bent 120 degrees geometry to one C(9), one O(3), and one O(4) atom. The C(12)-O(3) bond length is 1.23 Å. The C(12)-O(4) bond length is 1.34 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one Cu(1), one C(1), and one C(5) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one Cu(1), one C(10), and one C(6) atom. There are eight inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(2) and one Cl(1) atom. The H(1)-O(2) bond length is 1.01 Å. The H(1)-Cl(1) bond length is 2.01 Å. In the second H site, H(2) is bonded in a distorted single-bond geometry to one O(1) and one O(4) atom. The H(2)-O(1) bond length is 1.60 Å. The H(2)-O(4) bond length is 1.01 Å. In the third H site, H(3) is bonded in a single-bond geometry to one C(1) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(3) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(4) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(7) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(8) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(10) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one C(11) and one H(2) atom. In the second O site, O(2) is bonded in a water-like geometry to one C(11) and one H(1) atom. In the third O site, O(3) is bonded in a single-bond geometry to one C(12) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one C(12) and one H(2) atom. Cl(1) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Cu(1) and one H(1) atom. Linkers: 2 O=C(O)c1ccc(-c2ccc(C(=O)O)cn2)nc1 ,1 O=C(O)c1ccc(-c2ccc([C]O)cn2)nc1 ,1 O=[C]c1[c]cc(-c2ccc(C(=O)O)cn2)nc1. Metal clusters: 2 [Cu]. The MOF has largest included sphere 2.26 A, density 1.92 g/cm3, surface area 3835.29 m2/g, accessible volume 0.12 cm3/g