Co3H16(C9O7)2 crystallizes in the triclinic P-1 space group. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(4), one O(6), one O(7), and two equivalent O(2) atoms to form CoO5 square pyramids that share  a cornercorner with one Co(2)O6 octahedra and  an edgeedge with one Co(1)O5 square pyramid. The corner-sharing octahedral tilt angles are 70°. The Co(1)-O(4) bond length is 2.02 Å. The Co(1)-O(6) bond length is 2.03 Å. The Co(1)-O(7) bond length is 2.15 Å. There is one shorter (2.09 Å) and one longer (2.11 Å) Co(1)-O(2) bond length. In the second Co site, Co(2) is bonded to two equivalent O(1), two equivalent O(5), and two equivalent O(7) atoms to form corner-sharing CoO6 octahedra. Both Co(2)-O(1) bond lengths are 2.10 Å. Both Co(2)-O(5) bond lengths are 2.05 Å. Both Co(2)-O(7) bond lengths are 2.22 Å. There are nine inequivalent C sites. In the first C site, C(1) is bonded in a trigonal non-coplanar geometry to one C(2), one C(6), and one C(7) atom. The C(1)-C(2) bond length is 1.53 Å. The C(1)-C(6) bond length is 1.54 Å. The C(1)-C(7) bond length is 1.52 Å. In the second C site, C(2) is bonded in a water-like geometry to one C(1), one C(3), one H(1), and one H(2) atom. The C(2)-C(3) bond length is 1.53 Å. The C(2)-H(1) bond length is 0.95 Å. The C(2)-H(2) bond length is 0.95 Å. In the third C site, C(3) is bonded in a trigonal non-coplanar geometry to one C(2), one C(4), and one C(8) atom. The C(3)-C(4) bond length is 1.54 Å. The C(3)-C(8) bond length is 1.52 Å. In the fourth C site, C(4) is bonded in a water-like geometry to one C(3), one C(5), one H(3), and one H(4) atom. The C(4)-C(5) bond length is 1.54 Å. The C(4)-H(3) bond length is 0.95 Å. The C(4)-H(4) bond length is 0.95 Å. In the fifth C site, C(5) is bonded in a trigonal non-coplanar geometry to one C(4), one C(6), and one C(9) atom. The C(5)-C(6) bond length is 1.53 Å. The C(5)-C(9) bond length is 1.53 Å. In the sixth C site, C(6) is bonded in a water-like geometry to one C(1), one C(5), one H(5), and one H(6) atom. The C(6)-H(5) bond length is 0.95 Å. The C(6)-H(6) bond length is 0.95 Å. In the seventh C site, C(7) is bonded in a distorted bent 120 degrees geometry to one C(1), one O(1), and one O(2) atom. The C(7)-O(1) bond length is 1.24 Å. The C(7)-O(2) bond length is 1.28 Å. In the eighth C site, C(8) is bonded in a distorted bent 120 degrees geometry to one C(3), one O(3), and one O(4) atom. The C(8)-O(3) bond length is 1.25 Å. The C(8)-O(4) bond length is 1.26 Å. In the ninth C site, C(9) is bonded in a distorted bent 120 degrees geometry to one C(5), one O(5), and one O(6) atom. The C(9)-O(5) bond length is 1.27 Å. The C(9)-O(6) bond length is 1.26 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(2) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(4) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(4) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(6) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(6) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one O(7) atom. The H(7)-O(7) bond length is 0.95 Å. In the eighth H site, H(8) is bonded in a single-bond geometry to one O(7) atom. The H(8)-O(7) bond length is 0.95 Å. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Co(2) and one C(7) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent Co(1) and one C(7) atom. In the third O site, O(3) is bonded in a single-bond geometry to one C(8) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Co(1) and one C(8) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Co(2) and one C(9) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Co(1) and one C(9) atom. In the seventh O site, O(7) is bonded in a distorted water-like geometry to one Co(1), one Co(2), one H(7), and one H(8) atom. Linkers: 2 [O]C(=O)[C]1C[C](C([O])=O)C[C](C([O])=O)C1. Metal clusters: 3 [Co]. The MOF has largest included sphere 4.01 A, density 1.54 g/cm3, surface area 3300.05 m2/g, accessible volume 0.24 cm3/g