ZnH3(C3O2)3 crystallizes in the monoclinic P2_1/c space group. Zn(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. The Zn(1)-O(1) bond length is 1.97 Å. The Zn(1)-O(2) bond length is 1.95 Å. The Zn(1)-O(3) bond length is 1.97 Å. The Zn(1)-O(4) bond length is 1.95 Å. There are nine inequivalent C sites. In the first C site, C(1) is bonded in a distorted single-bond geometry to one C(3), one C(6), and one H(1) atom. The C(1)-C(3) bond length is 1.39 Å. The C(1)-C(6) bond length is 1.39 Å. The C(1)-H(1) bond length is 0.93 Å. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one C(3), one O(2), and one O(5) atom. The C(2)-C(3) bond length is 1.51 Å. The C(2)-O(2) bond length is 1.27 Å. The C(2)-O(5) bond length is 1.24 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one C(1), one C(2), and one C(5) atom. The C(3)-C(5) bond length is 1.39 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one C(5), one C(7), and one C(8) atom. The C(4)-C(5) bond length is 1.40 Å. The C(4)-C(7) bond length is 1.50 Å. The C(4)-C(8) bond length is 1.39 Å. In the fifth C site, C(5) is bonded in a single-bond geometry to one C(3), one C(4), and one H(2) atom. The C(5)-H(2) bond length is 0.93 Å. In the sixth C site, C(6) is bonded in a trigonal planar geometry to one C(1), one C(8), and one C(9) atom. The C(6)-C(8) bond length is 1.39 Å. The C(6)-C(9) bond length is 1.50 Å. In the seventh C site, C(7) is bonded in a distorted bent 120 degrees geometry to one C(4), one O(1), and one O(3) atom. The C(7)-O(1) bond length is 1.26 Å. The C(7)-O(3) bond length is 1.25 Å. In the eighth C site, C(8) is bonded in a distorted single-bond geometry to one C(4), one C(6), and one H(3) atom. The C(8)-H(3) bond length is 0.93 Å. In the ninth C site, C(9) is bonded in a bent 120 degrees geometry to one C(6), one O(4), and one O(6) atom. The C(9)-O(4) bond length is 1.27 Å. The C(9)-O(6) bond length is 1.24 Å. There are three 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(5) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(8) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(7) atom. In the second O site, O(2) is bonded in a water-like geometry to one Zn(1) and one C(2) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Zn(1) and one C(7) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(9) atom. In the fifth O site, O(5) is bonded in a single-bond geometry to one C(2) atom. In the sixth O site, O(6) is bonded in a single-bond geometry to one C(9) atom. Linkers: 4 [O]C(=O)c1cc([C]=O)cc(C([O])=O)c1. Metal clusters: 2 O=[C]O[Zn]1(O[C]=O)O[C]O[Zn](O[C]=O)(O[C]=O)O[C]O1. RCSR code: rtl. The MOF has largest included sphere 6.02 A, density 1.03 g/cm3, surface area 4012.50 m2/g, accessible volume 0.63 cm3/g