CaCuC14H6(NO4)2 crystallizes in the monoclinic P2_1/c space group. Ca(1) is bonded in an octahedral geometry to two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. Both Ca(1)-O(2) bond lengths are 2.46 Å. Both Ca(1)-O(3) bond lengths are 2.34 Å. Both Ca(1)-O(4) bond lengths are 2.28 Å. Cu(1) is bonded in a square co-planar geometry to two equivalent N(1) and two equivalent O(1) atoms. Both Cu(1)-N(1) bond lengths are 1.95 Å. Both Cu(1)-O(1) bond lengths are 1.97 Å. There are seven inequivalent C sites. In the first C site, C(5) is bonded in a distorted single-bond geometry to one C(1) and one H(1) atom. The C(5)-C(1) bond length is 1.40 Å. The C(5)-H(1) bond length is 1.09 Å. In the second C site, C(6) is bonded in a distorted bent 120 degrees geometry to one C(1), one O(2), and one O(4) atom. The C(6)-C(1) bond length is 1.51 Å. The C(6)-O(2) bond length is 1.27 Å. The C(6)-O(4) bond length is 1.26 Å. In the third C site, C(7) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(1), and one O(3) atom. The C(7)-C(2) bond length is 1.50 Å. The C(7)-O(1) bond length is 1.29 Å. The C(7)-O(3) bond length is 1.25 Å. In the fourth C site, C(1) is bonded in a trigonal planar geometry to one C(3), one C(5), and one C(6) atom. The C(1)-C(3) bond length is 1.40 Å. In the fifth C site, C(2) is bonded in a distorted trigonal planar geometry to one C(4), one C(7), and one N(1) atom. The C(2)-C(4) bond length is 1.39 Å. The C(2)-N(1) bond length is 1.35 Å. In the sixth C site, C(3) is bonded in a distorted bent 120 degrees geometry to one C(1), one N(1), and one H(3) atom. The C(3)-N(1) bond length is 1.34 Å. The C(3)-H(3) bond length is 1.09 Å. In the seventh C site, C(4) is bonded in a distorted single-bond geometry to one C(2) and one H(2) atom. The C(4)-H(2) bond length is 1.09 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) is bonded in a single-bond geometry to one C(5) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(4) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(3) atom. There are four inequivalent O sites. In the first O site, O(4) is bonded in a bent 150 degrees geometry to one Ca(1) and one C(6) atom. In the second O site, O(1) is bonded in a bent 120 degrees geometry to one Cu(1) and one C(7) atom. In the third O site, O(2) is bonded in a bent 120 degrees geometry to one Ca(1) and one C(6) atom. In the fourth O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Ca(1) and one C(7) atom. Linkers: 4 [O]C(=O)c1ccc(C([O])=O)nc1. Metal clusters: 2 [Ca] ,2 [Cu]. The MOF has largest included sphere 1.91 A, density 2.04 g/cm3, surface area 3193.45 m2/g, accessible volume 0.07 cm3/g