ZnH4(C3O2)3 crystallizes in the tetragonal P4_32_12 space group. There are three inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one O(12), one O(2), one O(3), one O(4), and two equivalent O(1) atoms to form distorted ZnO6 octahedra that share corners with two equivalent Zn(1)O6 octahedra and  a cornercorner with one C(16)H2O2 tetrahedra. The corner-sharing octahedral tilt angles are 58°. The Zn(1)-O(12) bond length is 2.31 Å. The Zn(1)-O(2) bond length is 2.29 Å. The Zn(1)-O(3) bond length is 1.98 Å. The Zn(1)-O(4) bond length is 1.97 Å. There is one shorter (2.01 Å) and one longer (2.08 Å) Zn(1)-O(1) bond length. In the second Zn site, Zn(2) is bonded in a 6-coordinate geometry to two equivalent O(11), two equivalent O(5), and two equivalent O(9) atoms. Both Zn(2)-O(11) bond lengths are 1.98 Å. Both Zn(2)-O(5) bond lengths are 2.09 Å. Both Zn(2)-O(9) bond lengths are 2.31 Å. In the third Zn site, Zn(3) is bonded to two equivalent O(10), two equivalent O(5), and two equivalent O(6) atoms to form distorted ZnO6 octahedra that share corners with two equivalent C(12)H2O2 tetrahedra. Both Zn(3)-O(10) bond lengths are 2.31 Å. Both Zn(3)-O(5) bond lengths are 2.01 Å. Both Zn(3)-O(6) bond lengths are 1.97 Å. There are eighteen inequivalent C sites. In the first C site, C(1) is bonded in a bent 120 degrees geometry to one C(8), one O(1), and one O(12) atom. The C(1)-C(8) bond length is 1.49 Å. The C(1)-O(1) bond length is 1.28 Å. The C(1)-O(12) bond length is 1.22 Å. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one C(10), one O(3), and one O(4) atom. The C(2)-C(10) bond length is 1.52 Å. The C(2)-O(3) bond length is 1.22 Å. The C(2)-O(4) bond length is 1.24 Å. In the third C site, C(3) is bonded in a bent 120 degrees geometry to one C(5), one O(11), and one O(6) atom. The C(3)-C(5) bond length is 1.47 Å. The C(3)-O(11) bond length is 1.27 Å. The C(3)-O(6) bond length is 1.21 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to one C(5) and one O(7) atom. The C(4)-C(5) bond length is 1.41 Å. The C(4)-O(7) bond length is 1.36 Å. In the fifth C site, C(5) is bonded in a trigonal planar geometry to one C(3), one C(4), and one C(7) atom. The C(5)-C(7) bond length is 1.43 Å. In the sixth C site, C(6) is bonded in a distorted single-bond geometry to one C(8) and one O(2) atom. The C(6)-C(8) bond length is 1.40 Å. The C(6)-O(2) bond length is 1.38 Å. In the seventh C site, C(7) is bonded in a distorted single-bond geometry to one C(5) and one H(1) atom. The C(7)-H(1) bond length is 0.95 Å. In the eighth C site, C(8) is bonded in a trigonal planar geometry to one C(1), one C(6), and one C(9) atom. The C(8)-C(9) bond length is 1.37 Å. In the ninth C site, C(9) is bonded in a distorted single-bond geometry to one C(8) and one H(2) atom. The C(9)-H(2) bond length is 0.95 Å. In the tenth C site, C(10) is bonded in a trigonal planar geometry to one C(15), one C(18), and one C(2) atom. The C(10)-C(15) bond length is 1.37 Å. The C(10)-C(18) bond length is 1.39 Å. In the eleventh C site, C(11) is bonded in a distorted single-bond geometry to one C(13) and one O(10) atom. The C(11)-C(13) bond length is 1.36 Å. The C(11)-O(10) bond length is 1.34 Å. In the twelfth C site, C(12) is bonded to two equivalent H(3,4); one O(10); and one O(8) atom to form CH2O2 tetrahedra that share  a cornercorner with one Zn(3)O6 octahedra. The corner-sharing octahedral tilt angles are 52°. Both C(12)-H(3,4) bond lengths are 0.99 Å. The C(12)-O(10) bond length is 1.42 Å. The C(12)-O(8) bond length is 1.39 Å. In the thirteenth C site, C(13) is bonded in a trigonal planar geometry to one C(11), one C(14), and one C(17) atom. The C(13)-C(14) bond length is 1.49 Å. The C(13)-C(17) bond length is 1.43 Å. In the fourteenth C site, C(14) is bonded in a distorted bent 120 degrees geometry to one C(13), one O(5), and one O(9) atom. The C(14)-O(5) bond length is 1.28 Å. The C(14)-O(9) bond length is 1.23 Å. In the fifteenth C site, C(15) is bonded in a distorted single-bond geometry to one C(10) and one O(8) atom. The C(15)-O(8) bond length is 1.32 Å. In the sixteenth C site, C(16) is bonded to one H(5), one H(8), one O(2), and one O(7) atom to form CH2O2 tetrahedra that share  a cornercorner with one Zn(1)O6 octahedra. The corner-sharing octahedral tilt angles are 54°. The C(16)-H(5) bond length is 1.14 Å. The C(16)-H(8) bond length is 1.14 Å. The C(16)-O(2) bond length is 1.47 Å. The C(16)-O(7) bond length is 1.52 Å. In the seventeenth C site, C(17) is bonded in a distorted single-bond geometry to one C(13) and one H(6) atom. The C(17)-H(6) bond length is 0.95 Å. In the eighteenth C site, C(18) is bonded in a distorted single-bond geometry to one C(10) and one H(7) atom. The C(18)-H(7) bond length is 0.95 Å. There are seven inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(7) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(9) atom. In the third H site, H(3,4) is bonded in a single-bond geometry to one C(12) atom. In the fourth H site, H(5) is bonded in a single-bond geometry to one C(16) atom. In the fifth H site, H(6) is bonded in a single-bond geometry to one C(17) atom. In the sixth H site, H(7) is bonded in a single-bond geometry to one C(18) atom. In the seventh H site, H(8) is bonded in a single-bond geometry to one C(16) atom. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to two equivalent Zn(1) and one C(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Zn(1), one C(16), and one C(6) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(2) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Zn(1) and one C(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Zn(2), one Zn(3), and one C(14) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one Zn(3) and one C(3) atom. In the seventh O site, O(7) is bonded in a water-like geometry to one C(16) and one C(4) atom. In the eighth O site, O(8) is bonded in a water-like geometry to one C(12) and one C(15) atom. In the ninth O site, O(9) is bonded in a distorted L-shaped geometry to one Zn(2) and one C(14) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one Zn(3), one C(11), and one C(12) atom. In the eleventh O site, O(11) is bonded in a bent 120 degrees geometry to one Zn(2) and one C(3) atom. In the twelfth O site, O(12) is bonded in a distorted L-shaped geometry to one Zn(1) and one C(1) atom. Linkers: 16 [O]C(=O)c1ccc(C([O])=O)c2c1OCO2. Metal clusters: 16 [Zn]. The MOF has largest included sphere 6.48 A, density 1.38 g/cm3, surface area 3240.96 m2/g, accessible volume 0.41 cm3/g