Cu2C8P2N2H12O7 crystallizes in the triclinic P-1 space group. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(3), one O(6), one O(7), and two equivalent O(2) atoms to form distorted CuO5 square pyramids that share corners with two equivalent P(2)CO3 tetrahedra, corners with three equivalent P(1)CO3 tetrahedra, and  an edgeedge with one Cu(1)O5 square pyramid. The Cu(1)-O(3) bond length is 1.98 Å. The Cu(1)-O(6) bond length is 1.99 Å. The Cu(1)-O(7) bond length is 1.98 Å. There is one shorter (1.99 Å) and one longer (2.33 Å) Cu(1)-O(2) bond length. In the second Cu site, Cu(2) is bonded in a linear geometry to one N(1) and one O(1) atom. The Cu(2)-N(1) bond length is 1.86 Å. The Cu(2)-O(1) bond length is 1.83 Å. There are eight inequivalent C sites. In the first C site, C(1) is bonded in a distorted tetrahedral geometry to one C(2), one P(1), one P(2), and one O(4) atom. The C(1)-C(2) bond length is 1.53 Å. The C(1)-P(1) bond length is 1.86 Å. The C(1)-P(2) bond length is 1.86 Å. The C(1)-O(4) bond length is 1.43 Å. In the second C site, C(2) is bonded in a distorted water-like geometry to one C(1), one C(3), one H(1), and one H(2) atom. The C(2)-C(3) bond length is 1.50 Å. The C(2)-H(1) bond length is 1.10 Å. The C(2)-H(2) bond length is 1.10 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one C(2), one C(4), and one C(7) atom. The C(3)-C(4) bond length is 1.40 Å. The C(3)-C(7) bond length is 1.39 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(3) atom. The C(4)-C(5) bond length is 1.39 Å. The C(4)-H(3) 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 H(4) atom. The C(5)-C(6) bond length is 1.39 Å. The C(5)-H(4) bond length is 1.09 Å. In the sixth C site, C(6) is bonded in a distorted trigonal planar geometry to one C(5), one N(1), and one H(5) atom. The C(6)-N(1) bond length is 1.35 Å. The C(6)-H(5) bond length is 1.09 Å. In the seventh C site, C(7) is bonded in a distorted bent 120 degrees geometry to one C(3), one N(1), and one H(6) atom. The C(7)-N(1) bond length is 1.36 Å. The C(7)-H(6) bond length is 1.09 Å. In the eighth C site, C(8) is bonded in a distorted trigonal non-coplanar geometry to one N(2), one H(10), and one H(9) atom. The C(8)-N(2) bond length is 1.48 Å. The C(8)-H(10) bond length is 1.10 Å. The C(8)-H(9) bond length is 1.10 Å. There are two inequivalent P sites. In the first P site, P(1) is bonded to one C(1), one O(1), one O(2), and one O(3) atom to form PCO3 tetrahedra that share corners with three equivalent Cu(1)O5 square pyramids and  a cornercorner with one P(2)CO3 tetrahedra. The P(1)-O(1) bond length is 1.55 Å. The P(1)-O(2) bond length is 1.55 Å. The P(1)-O(3) bond length is 1.54 Å. In the second P site, P(2) is bonded to one C(1), one O(5), one O(6), and one O(7) atom to form distorted PCO3 tetrahedra that share corners with two equivalent Cu(1)O5 square pyramids and  a cornercorner with one P(1)CO3 tetrahedra. The P(2)-O(5) bond length is 1.51 Å. The P(2)-O(6) bond length is 1.56 Å. The P(2)-O(7) bond length is 1.55 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one Cu(2), one C(6), and one C(7) atom. In the second N site, N(2) is bonded in a tetrahedral geometry to one C(8), one H(11), one H(12), and one H(8) atom. The N(2)-H(11) bond length is 1.07 Å. The N(2)-H(12) bond length is 1.04 Å. The N(2)-H(8) bond length is 1.05 Å. There are twelve inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(2) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(2) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(4) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(5) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(6) 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 distorted single-bond geometry to one O(4) and one O(6) atom. The H(7)-O(4) bond length is 1.00 Å. The H(7)-O(6) bond length is 1.67 Å. In the eighth H site, H(8) is bonded in a single-bond geometry to one N(2) and one O(7) atom. The H(8)-O(7) bond length is 1.70 Å. In the ninth H site, H(9) is bonded in a single-bond geometry to one C(8) atom. In the tenth H site, H(10) is bonded in a single-bond geometry to one C(8) atom. In the eleventh H site, H(11) is bonded in a distorted single-bond geometry to one N(2) and one O(5) atom. The H(11)-O(5) bond length is 1.60 Å. In the twelfth H site, H(12) is bonded in a single-bond geometry to one N(2) atom. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Cu(2) and one P(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to two equivalent Cu(1) and one P(1) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Cu(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one C(1) and one H(7) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one P(2) and one H(11) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Cu(1), one P(2), and one H(7) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Cu(1), one P(2), and one H(8) atom. Linkers: 2 [O]P([O])(=O)C(O)(Cc1cccnc1)P([O])([O])=O. Metal clusters: 4 [Cu]. The MOF has largest included sphere 2.48 A, density 2.27 g/cm3, surface area 2924.47 m2/g, accessible volume 0.08 cm3/g