Zn2C10N2H14O9 crystallizes in the orthorhombic Pna2_1 space group. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a distorted octahedral geometry to one N(1), one N(2), one O(3), one O(5), one O(7), and one O(9) atom. The Zn(1)-N(1) bond length is 2.23 Å. The Zn(1)-N(2) bond length is 2.22 Å. The Zn(1)-O(3) bond length is 2.13 Å. The Zn(1)-O(5) bond length is 2.15 Å. The Zn(1)-O(7) bond length is 2.16 Å. The Zn(1)-O(9) bond length is 2.02 Å. In the second Zn site, Zn(2) is bonded in a tetrahedral geometry to one O(1), one O(4), one O(6), and one O(8) atom. The Zn(2)-O(1) bond length is 1.99 Å. The Zn(2)-O(4) bond length is 1.98 Å. The Zn(2)-O(6) bond length is 2.03 Å. The Zn(2)-O(8) bond length is 1.97 Å. There are ten inequivalent C sites. In the first C site, C(1) is bonded in a 3-coordinate geometry to one N(1), one H(1), and one H(2) atom. The C(1)-N(1) bond length is 1.49 Å. The C(1)-H(1) bond length is 1.10 Å. The C(1)-H(2) bond length is 1.10 Å. In the second C site, C(2) is bonded in a distorted trigonal non-coplanar geometry to one N(2), one H(3), and one H(4) atom. The C(2)-N(2) bond length is 1.48 Å. The C(2)-H(3) bond length is 1.10 Å. The C(2)-H(4) bond length is 1.10 Å. In the third C site, C(3) is bonded in a distorted trigonal non-coplanar geometry to one N(1), one H(5), and one H(6) atom. The C(3)-N(1) bond length is 1.48 Å. The C(3)-H(5) bond length is 1.10 Å. The C(3)-H(6) bond length is 1.10 Å. In the fourth C site, C(4) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(2) atom. The C(4)-O(1) bond length is 1.29 Å. The C(4)-O(2) bond length is 1.25 Å. In the fifth C site, C(5) is bonded in a distorted trigonal non-coplanar geometry to one N(1), one H(7), and one H(8) atom. The C(5)-N(1) bond length is 1.47 Å. The C(5)-H(7) bond length is 1.10 Å. The C(5)-H(8) bond length is 1.10 Å. In the sixth C site, C(6) is bonded in a distorted bent 120 degrees geometry to one O(3) and one O(4) atom. The C(6)-O(3) bond length is 1.27 Å. The C(6)-O(4) bond length is 1.28 Å. In the seventh C site, C(7) is bonded in a distorted trigonal non-coplanar geometry to one N(2), one H(10), and one H(9) atom. The C(7)-N(2) bond length is 1.47 Å. The C(7)-H(10) bond length is 1.10 Å. The C(7)-H(9) bond length is 1.10 Å. In the eighth C site, C(8) is bonded in a distorted bent 120 degrees geometry to one O(5) and one O(6) atom. The C(8)-O(5) bond length is 1.26 Å. The C(8)-O(6) bond length is 1.29 Å. In the ninth C site, C(9) is bonded in a distorted trigonal non-coplanar geometry to one N(2), one H(11), and one H(12) atom. The C(9)-N(2) bond length is 1.47 Å. The C(9)-H(11) bond length is 1.10 Å. The C(9)-H(12) bond length is 1.10 Å. In the tenth C site, C(10) is bonded in a distorted bent 120 degrees geometry to one O(7) and one O(8) atom. The C(10)-O(7) bond length is 1.26 Å. The C(10)-O(8) bond length is 1.28 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded to one Zn(1), one C(1), one C(3), and one C(5) atom to form corner-sharing NZnC3 tetrahedra. In the second N site, N(2) is bonded to one Zn(1), one C(2), one C(7), and one C(9) atom to form corner-sharing NZnC3 tetrahedra. There are fourteen inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(1) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(2) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(2) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(3) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(3) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(5) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(5) atom. In the ninth H site, H(9) is bonded in a single-bond geometry to one C(7) atom. In the tenth H site, H(10) is bonded in a single-bond geometry to one C(7) atom. In the eleventh H site, H(11) is bonded in a single-bond geometry to one C(9) atom. In the twelfth H site, H(12) is bonded in a single-bond geometry to one C(9) atom. In the thirteenth H site, H(13) is bonded in a distorted linear geometry to one O(2) and one O(9) atom. The H(13)-O(2) bond length is 1.59 Å. The H(13)-O(9) bond length is 1.01 Å. In the fourteenth H site, H(14) is bonded in a single-bond geometry to one O(6) and one O(9) atom. The H(14)-O(6) bond length is 1.72 Å. The H(14)-O(9) bond length is 0.99 Å. There are nine inequivalent O sites. In the first O site, O(5) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(8) atom. In the second O site, O(6) is bonded in a 3-coordinate geometry to one Zn(2), one C(8), and one H(14) atom. In the third O site, O(7) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(10) atom. In the fourth O site, O(8) is bonded in a bent 120 degrees geometry to one Zn(2) and one C(10) atom. In the fifth O site, O(9) is bonded in a distorted trigonal non-coplanar geometry to one Zn(1), one H(13), and one H(14) atom. In the sixth O site, O(1) is bonded in a bent 120 degrees geometry to one Zn(2) and one C(4) atom. In the seventh O site, O(2) is bonded in a bent 150 degrees geometry to one C(4) and one H(13) atom. In the eighth O site, O(3) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(6) atom. In the ninth O site, O(4) is bonded in a bent 120 degrees geometry to one Zn(2) and one C(6) atom. Linkers: 4 [O]C(=O)CN(CCN(CC([O])=O)CC([O])=O)CC([O])=O. Metal clusters: 8 [Zn]. The MOF has largest included sphere 1.98 A, density 2.14 g/cm3, surface area 3285.92 m2/g, accessible volume 0.07 cm3/g