Cu2C9H6(N2O3)2H2O crystallizes in the triclinic P1 space group. The structure consists of two water molecules inside a Cu2C9H6(N2O3)2 framework. In the Cu2C9H6(N2O3)2 framework, there are four inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one N(2), one N(3), one O(1), one O(3), one O(7), and one O(9) atom to form distorted corner-sharing CuN2O4 octahedra. The corner-sharing octahedral tilt angles are 64°. The Cu(1)-N(2) bond length is 2.23 Å. The Cu(1)-N(3) bond length is 2.20 Å. The Cu(1)-O(1) bond length is 2.04 Å. The Cu(1)-O(3) bond length is 2.29 Å. The Cu(1)-O(7) bond length is 2.04 Å. The Cu(1)-O(9) bond length is 2.01 Å. In the second Cu site, Cu(2) is bonded to one N(1), one N(4), one O(10), one O(2), one O(4), and one O(8) atom to form distorted corner-sharing CuN2O4 octahedra. The corner-sharing octahedral tilt angles are 62°. The Cu(2)-N(1) bond length is 2.23 Å. The Cu(2)-N(4) bond length is 2.19 Å. The Cu(2)-O(10) bond length is 2.01 Å. The Cu(2)-O(2) bond length is 2.04 Å. The Cu(2)-O(4) bond length is 2.29 Å. The Cu(2)-O(8) bond length is 2.05 Å. In the third Cu site, Cu(3) is bonded to one N(5), one N(7), one O(10), one O(11), one O(13), and one O(9) atom to form corner-sharing CuN2O4 octahedra. The corner-sharing octahedral tilt angles range from 62-64°. The Cu(3)-N(5) bond length is 1.93 Å. The Cu(3)-N(7) bond length is 1.93 Å. The Cu(3)-O(10) bond length is 2.00 Å. The Cu(3)-O(11) bond length is 2.52 Å. The Cu(3)-O(13) bond length is 2.51 Å. The Cu(3)-O(9) bond length is 2.01 Å. In the fourth Cu site, Cu(4) is bonded in a square co-planar geometry to one N(6), one N(8), one O(10), and one O(9) atom. The Cu(4)-N(6) bond length is 1.93 Å. The Cu(4)-N(8) bond length is 1.92 Å. The Cu(4)-O(10) bond length is 2.00 Å. The Cu(4)-O(9) bond length is 2.00 Å. There are seventeen inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one C(3), one O(1), and one O(3) atom. The C(1)-C(3) bond length is 1.48 Å. The C(1)-O(1) bond length is 1.28 Å. The C(1)-O(3) bond length is 1.28 Å. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one C(4), one O(2), and one O(4) atom. The C(2)-C(4) bond length is 1.48 Å. The C(2)-O(2) bond length is 1.28 Å. The C(2)-O(4) bond length is 1.28 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one C(1), one C(13), and one C(5) atom. The C(3)-C(13) bond length is 1.40 Å. The C(3)-C(5) bond length is 1.40 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one C(14), one C(2), and one C(6) atom. The C(4)-C(14) bond length is 1.40 Å. The C(4)-C(6) bond length is 1.40 Å. In the fifth C site, C(5) is bonded in a distorted trigonal planar geometry to one C(3); one C(7,8); and one H(1,2) atom. The C(5)-C(7,8) bond length is 1.40 Å. The C(5)-H(1,2) bond length is 1.09 Å. In the sixth C site, C(6) is bonded in a distorted trigonal planar geometry to one C(4); one C(7,8); and one H(1,2) atom. The C(6)-C(7,8) bond length is 1.40 Å. The C(6)-H(1,2) bond length is 1.09 Å. In the seventh C site, C(7,8) is bonded in a trigonal planar geometry to one C(15), one C(5), and one C(9) atom. The C(7,8)-C(15) bond length is 1.50 Å. The C(7,8)-C(9) bond length is 1.40 Å. In the eighth C site, C(9) is bonded in a distorted single-bond geometry to one C(11); one C(7,8); and one H(3,4) atom. The C(9)-C(11) bond length is 1.40 Å. The C(9)-H(3,4) bond length is 1.09 Å. In the ninth C site, C(10) is bonded in a distorted single-bond geometry to one C(12); one C(7,8); and one H(3,4) atom. The C(10)-C(12) bond length is 1.40 Å. The C(10)-C(7,8) bond length is 1.40 Å. The C(10)-H(3,4) bond length is 1.09 Å. In the tenth C site, C(11) is bonded in a trigonal planar geometry to one C(13), one C(17), and one C(9) atom. The C(11)-C(13) bond length is 1.40 Å. The C(11)-C(17) bond length is 1.47 Å. In the eleventh C site, C(12) is bonded in a trigonal planar geometry to one C(10), one C(14), and one C(18) atom. The C(12)-C(14) bond length is 1.40 Å. The C(12)-C(18) bond length is 1.47 Å. In the twelfth C site, C(13) is bonded in a distorted single-bond geometry to one C(11); one C(3); and one H(5,6) atom. The C(13)-H(5,6) bond length is 1.09 Å. In the thirteenth C site, C(14) is bonded in a distorted single-bond geometry to one C(12); one C(4); and one H(5,6) atom. The C(14)-H(5,6) bond length is 1.09 Å. In the fourteenth C site, C(15) is bonded in a distorted bent 120 degrees geometry to one C(7,8); one O(5); and one O(7) atom. The C(15)-O(5) bond length is 1.28 Å. The C(15)-O(7) bond length is 1.27 Å. In the fifteenth C site, C(16) is bonded in a distorted bent 120 degrees geometry to one C(7,8); one O(6); and one O(8) atom. The C(16)-C(7,8) bond length is 1.50 Å. The C(16)-O(6) bond length is 1.28 Å. The C(16)-O(8) bond length is 1.27 Å. In the sixteenth C site, C(17) is bonded in a distorted trigonal planar geometry to one C(11), one N(1), and one N(4) atom. The C(17)-N(1) bond length is 1.35 Å. The C(17)-N(4) bond length is 1.35 Å. In the seventeenth C site, C(18) is bonded in a distorted trigonal planar geometry to one C(12), one N(2), and one N(3) atom. The C(18)-N(2) bond length is 1.35 Å. The C(18)-N(3) bond length is 1.35 Å. There are eight inequivalent N sites. In the first N site, N(1) is bonded in a 3-coordinate geometry to one Cu(2), one C(17), and one N(5) atom. The N(1)-N(5) bond length is 1.33 Å. In the second N site, N(2) is bonded in a 3-coordinate geometry to one Cu(1), one C(18), and one N(6) atom. The N(2)-N(6) bond length is 1.33 Å. In the third N site, N(3) is bonded in a 3-coordinate geometry to one Cu(1), one C(18), and one N(7) atom. The N(3)-N(7) bond length is 1.33 Å. In the fourth N site, N(4) is bonded in a 3-coordinate geometry to one Cu(2), one C(17), and one N(8) atom. The N(4)-N(8) bond length is 1.33 Å. In the fifth N site, N(5) is bonded in a distorted trigonal planar geometry to one Cu(3), one N(1), and one N(8) atom. The N(5)-N(8) bond length is 1.30 Å. In the sixth N site, N(6) is bonded in a distorted trigonal planar geometry to one Cu(4), one N(2), and one N(7) atom. The N(6)-N(7) bond length is 1.30 Å. In the seventh N site, N(7) is bonded in a distorted trigonal planar geometry to one Cu(3), one N(3), and one N(6) atom. In the eighth N site, N(8) is bonded in a distorted trigonal planar geometry to one Cu(4), one N(4), and one N(5) atom. There are nine inequivalent H sites. In the first H site, H(1,2) is bonded in a single-bond geometry to one C(5) atom. In the second H site, H(3,4) is bonded in a single-bond geometry to one C(9) atom. In the third H site, H(5,6) is bonded in a single-bond geometry to one C(13) atom. In the fourth H site, H(7) is bonded in a distorted linear geometry to one O(5) and one O(9) atom. The H(7)-O(5) bond length is 1.54 Å. The H(7)-O(9) bond length is 1.04 Å. In the fifth H site, H(8) is bonded in a distorted linear geometry to one O(10) and one O(6) atom. The H(8)-O(10) bond length is 1.04 Å. The H(8)-O(6) bond length is 1.54 Å. In the sixth H site, H(9) is bonded in a single-bond geometry to one O(11) atom. The H(9)-O(11) bond length is 0.98 Å. In the seventh H site, H(11) is bonded in a single-bond geometry to one O(13) atom. The H(11)-O(13) bond length is 0.98 Å. In the eighth H site, H(13) is bonded in a single-bond geometry to one O(11) atom. The H(13)-O(11) bond length is 0.98 Å. In the ninth H site, H(15) is bonded in a single-bond geometry to one O(13) atom. The H(15)-O(13) bond length is 0.98 Å. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in an L-shaped geometry to one Cu(1) and one C(1) atom. In the second O site, O(2) is bonded in an L-shaped geometry to one Cu(2) and one C(2) atom. In the third O site, O(3) is bonded in a distorted L-shaped 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(2) and one C(2) atom. In the fifth O site, O(5) is bonded in a water-like geometry to one C(15) and one H(7) atom. In the sixth O site, O(6) is bonded in a water-like geometry to one C(16) and one H(8) atom. In the seventh O site, O(7) is bonded in a bent 120 degrees geometry to one Cu(1) and one C(15) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one Cu(2) and one C(16) atom. In the ninth O site, O(9) is bonded in a distorted single-bond geometry to one Cu(1), one Cu(3), one Cu(4), and one H(7) atom. In the tenth O site, O(10) is bonded in a distorted single-bond geometry to one Cu(2), one Cu(3), one Cu(4), and one H(8) atom. In the eleventh O site, O(11) is bonded in a distorted water-like geometry to one Cu(3), one H(13), and one H(9) atom. In the twelfth O site, O(13) is bonded in a distorted water-like geometry to one Cu(3), one H(11), and one H(15) atom. Linkers: 2 [O]C(=O)c1cc(C([O])=O)cc(C2=NN=N[N]2)c1. Metal clusters: 4 [Cu]. The MOF has largest included sphere 3.96 A, density 1.75 g/cm3, surface area 3234.30 m2/g, accessible volume 0.17 cm3/g