Zn2C12NH11O10 crystallizes in the triclinic P-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 O(1), one O(10), one O(3), one O(5), one O(6), and one O(9) atom. The Zn(1)-O(1) bond length is 2.32 Å. The Zn(1)-O(10) bond length is 2.04 Å. The Zn(1)-O(3) bond length is 2.24 Å. The Zn(1)-O(5) bond length is 2.09 Å. The Zn(1)-O(6) bond length is 2.05 Å. The Zn(1)-O(9) bond length is 2.16 Å. In the second Zn site, Zn(2) is bonded in a 6-coordinate geometry to one N(1), one O(2), one O(3), one O(7), and two equivalent O(4) atoms. The Zn(2)-N(1) bond length is 2.34 Å. The Zn(2)-O(2) bond length is 2.06 Å. The Zn(2)-O(3) bond length is 2.08 Å. The Zn(2)-O(7) bond length is 2.00 Å. There is one shorter (2.04 Å) and one longer (2.41 Å) Zn(2)-O(4) bond length. There are twelve inequivalent C sites. In the first C site, C(1) is bonded in a bent 120 degrees geometry to one C(2), one O(1), and one O(3) atom. The C(1)-C(2) bond length is 1.49 Å. The C(1)-O(1) bond length is 1.26 Å. The C(1)-O(3) bond length is 1.30 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(1), one C(3), and one C(8) atom. The C(2)-C(3) bond length is 1.41 Å. The C(2)-C(8) bond length is 1.42 Å. In the third C site, C(3) is bonded in a distorted single-bond geometry to one C(2) and one H(1) atom. The C(3)-H(1) bond length is 1.09 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to one C(5) and one H(2) atom. The C(4)-C(5) bond length is 1.40 Å. The C(4)-H(2) bond length is 1.09 Å. In the fifth C site, C(5) is bonded in a trigonal planar geometry to one C(4), one C(6), and one C(7) atom. The C(5)-C(6) bond length is 1.50 Å. The C(5)-C(7) bond length is 1.40 Å. In the sixth C site, C(6) is bonded in a distorted bent 120 degrees geometry to one C(5), one O(7), and one O(8) atom. The C(6)-O(7) bond length is 1.28 Å. The C(6)-O(8) bond length is 1.27 Å. In the seventh C site, C(7) is bonded in a distorted single-bond geometry to one C(5), one C(8), and one H(3) atom. The C(7)-C(8) bond length is 1.40 Å. The C(7)-H(3) bond length is 1.09 Å. In the eighth C site, C(8) is bonded in a distorted trigonal planar geometry to one C(2), one C(7), and one N(1) atom. The C(8)-N(1) bond length is 1.45 Å. In the ninth C site, C(9) is bonded in a distorted trigonal non-coplanar geometry to one N(1), one H(4), and one H(5) atom. The C(9)-N(1) bond length is 1.47 Å. The C(9)-H(4) bond length is 1.10 Å. The C(9)-H(5) 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(2) and one O(6) atom. The C(10)-O(2) bond length is 1.26 Å. The C(10)-O(6) bond length is 1.28 Å. In the eleventh C site, C(11) is bonded in a distorted trigonal non-coplanar geometry to one N(1), one H(6), and one H(7) atom. The C(11)-N(1) bond length is 1.48 Å. The C(11)-H(6) bond length is 1.10 Å. The C(11)-H(7) bond length is 1.10 Å. In the twelfth C site, C(12) is bonded in a distorted bent 120 degrees geometry to one O(4) and one O(5) atom. The C(12)-O(4) bond length is 1.28 Å. The C(12)-O(5) bond length is 1.26 Å. N(1) is bonded in a distorted tetrahedral geometry to one Zn(2), one C(11), one C(8), and one C(9) atom. There are eleven inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(3) 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(7) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(9) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(9) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(11) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(11) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one O(9) atom. The H(8)-O(9) bond length is 0.99 Å. In the ninth H site, H(9) is bonded in a single-bond geometry to one O(9) atom. The H(9)-O(9) bond length is 0.98 Å. In the tenth H site, H(10) is bonded in a single-bond geometry to one O(10) atom. The H(10)-O(10) bond length is 0.99 Å. In the eleventh H site, H(11) is bonded in a linear geometry to one O(10) and one O(8) atom. The H(11)-O(10) bond length is 1.01 Å. The H(11)-O(8) bond length is 1.59 Å. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Zn(1) and one C(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Zn(2) and one C(10) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Zn(1), one Zn(2), and one C(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to two equivalent Zn(2) and one C(12) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one Zn(1) and one C(12) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(10) atom. In the seventh O site, O(7) is bonded in a bent 120 degrees geometry to one Zn(2) and one C(6) atom. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one C(6) and one H(11) atom. In the ninth O site, O(9) is bonded in a distorted water-like geometry to one Zn(1), one H(8), and one H(9) atom. In the tenth O site, O(10) is bonded in a distorted trigonal non-coplanar geometry to one Zn(1), one H(10), and one H(11) atom. Linkers: 2 [O]C(=O)CN(CC([O])=O)c1cc(C([O])=O)ccc1C([O])=O. Metal clusters: 4 [Zn]. The MOF has largest included sphere 3.07 A, density 2.05 g/cm3, surface area 3072.03 m2/g, accessible volume 0.11 cm3/g