Zn3H16(C2O)16 is Indium-like structured and crystallizes in the monoclinic C2/c space group. The structure is zero-dimensional and consists of four Zn3H16(C2O)16 clusters. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one O(1), one O(5), one O(6), and one O(7) atom to form corner-sharing ZnO4 tetrahedra. The corner-sharing octahedral tilt angles are 79°. The Zn(1)-O(1) bond length is 1.95 Å. The Zn(1)-O(5) bond length is 1.98 Å. The Zn(1)-O(6) bond length is 1.99 Å. The Zn(1)-O(7) bond length is 1.95 Å. In the second Zn site, Zn(2) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(6) atoms to form corner-sharing ZnO6 octahedra. Both Zn(2)-O(2) bond lengths are 2.04 Å. Both Zn(2)-O(3) bond lengths are 2.04 Å. Both Zn(2)-O(6) bond lengths are 2.25 Å. There are sixteen inequivalent C sites. In the first C site, C(5) is bonded in a distorted single-bond geometry to one C(6) and one H(2) atom. The C(5)-C(6) bond length is 1.40 Å. The C(5)-H(2) bond length is 0.93 Å. In the second C site, C(4) is bonded in a trigonal planar geometry to one C(11), one C(7), and one C(9) atom. The C(4)-C(11) bond length is 1.40 Å. The C(4)-C(7) bond length is 1.49 Å. The C(4)-C(9) bond length is 1.37 Å. In the third C site, C(2) is bonded in a distorted single-bond geometry to one C(3) and one H(1) atom. The C(2)-C(3) bond length is 1.38 Å. The C(2)-H(1) bond length is 0.93 Å. In the fourth C site, C(3) is bonded in a trigonal planar geometry to one C(13), one C(2), and one C(8) atom. The C(3)-C(13) bond length is 1.50 Å. The C(3)-C(8) bond length is 1.40 Å. In the fifth C site, C(1) is bonded in a bent 120 degrees geometry to one C(14), one O(7), and one O(8) atom. The C(1)-C(14) bond length is 1.49 Å. The C(1)-O(7) bond length is 1.25 Å. The C(1)-O(8) bond length is 1.23 Å. In the sixth C site, C(7) is bonded in a distorted bent 120 degrees geometry to one C(4), one O(3), and one O(5) atom. The C(7)-O(3) bond length is 1.25 Å. The C(7)-O(5) bond length is 1.26 Å. In the seventh C site, C(9) is bonded in a distorted single-bond geometry to one C(4) and one H(4) atom. The C(9)-H(4) bond length is 0.93 Å. In the eighth C site, C(11) is bonded in a single-bond geometry to one C(4) and one H(5) atom. The C(11)-H(5) bond length is 0.93 Å. In the ninth C site, C(6) is bonded in a trigonal planar geometry to one C(10), one C(12), and one C(5) atom. The C(6)-C(10) bond length is 1.50 Å. The C(6)-C(12) bond length is 1.37 Å. In the tenth C site, C(10) is bonded in a distorted bent 120 degrees geometry to one C(6), one O(1), and one O(2) atom. The C(10)-O(1) bond length is 1.26 Å. The C(10)-O(2) bond length is 1.25 Å. In the eleventh C site, C(13) is bonded in a bent 120 degrees geometry to one C(3), one O(4), and one O(6) atom. The C(13)-O(4) bond length is 1.23 Å. The C(13)-O(6) bond length is 1.30 Å. In the twelfth C site, C(14) is bonded in a trigonal planar geometry to one C(1), one C(15), and one C(16) atom. The C(14)-C(15) bond length is 1.39 Å. The C(14)-C(16) bond length is 1.36 Å. In the thirteenth C site, C(8) is bonded in a distorted single-bond geometry to one C(3) and one H(3) atom. The C(8)-H(3) bond length is 0.93 Å. In the fourteenth C site, C(16) is bonded in a distorted single-bond geometry to one C(14) and one H(8) atom. The C(16)-H(8) bond length is 0.93 Å. In the fifteenth C site, C(12) is bonded in a distorted single-bond geometry to one C(6) and one H(6) atom. The C(12)-H(6) bond length is 0.93 Å. In the sixteenth C site, C(15) is bonded in a distorted single-bond geometry to one C(14) and one H(7) atom. The C(15)-H(7) bond length is 0.93 Å. There are eight inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(2) 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. 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(11) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(12) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(15) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(16) atom. There are eight inequivalent O sites. In the first O site, O(3) is bonded in a bent 150 degrees geometry to one Zn(2) and one C(7) atom. In the second O site, O(5) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(7) atom. In the third O site, O(1) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(10) atom. In the fourth O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Zn(2) and one C(10) atom. In the fifth O site, O(4) is bonded in a single-bond geometry to one C(13) atom. In the sixth O site, O(6) is bonded in a distorted trigonal non-coplanar geometry to one Zn(1), one Zn(2), and one C(13) atom. In the seventh O site, O(7) is bonded in a water-like geometry to one Zn(1) and one C(1) atom. In the eighth O site, O(8) is bonded in a single-bond geometry to one C(1) atom. Linkers: 9 [O]C(=O)c1ccc(C([O])=O)cc1. Metal clusters: 2 O=[C]O[Zn]1(O[C]=O)O[C]O[Zn]2(O[C]O1)O[C]O[Zn](O[C]=O)(O[C]=O)O[C]O2. RCSR code: bcg. The MOF has largest included sphere 7.18 A, density 0.96 g/cm3, surface area 4108.33 m2/g, accessible volume 0.72 cm3/g