Ni2C7HO6CH crystallizes in the trigonal R3m space group. The structure consists of nine 02329_fluka molecules inside a Ni2C7HO6 framework. In the Ni2C7HO6 framework, Ni(1) is bonded to one O(2), two equivalent O(1), and two equivalent O(3) atoms to form distorted edge-sharing NiO5 square pyramids. The Ni(1)-O(2) bond length is 2.03 Å. There is one shorter (2.06 Å) and one longer (2.18 Å) Ni(1)-O(1) bond length. There is one shorter (1.87 Å) and one longer (2.14 Å) Ni(1)-O(3) bond length. There are four inequivalent C sites. In the first C site, C(1) is bonded in a single-bond geometry to one C(4) and one O(1) atom. The C(1)-C(4) bond length is 1.59 Å. The C(1)-O(1) bond length is 1.15 Å. In the second C site, C(2) is bonded in a 2-coordinate geometry to one C(4), one O(2), and one O(3) atom. The C(2)-C(4) bond length is 1.50 Å. The C(2)-O(2) bond length is 1.30 Å. The C(2)-O(3) bond length is 1.31 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to two equivalent C(4) and one H(2) atom. Both C(3)-C(4) bond lengths are 1.31 Å. The C(3)-H(2) bond length is 1.07 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one C(1), one C(2), and one C(3) atom. H(2) is bonded in a single-bond geometry to one C(3) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to two equivalent Ni(1) and one C(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Ni(1) and one C(2) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to two equivalent Ni(1) and one C(2) atom. Linkers: 3 [O]C(=O)[C]1[CH][C](C([O])=O)C(=O)[CH]C1=O. Metal clusters: 6 [Ni]. The MOF has largest included sphere 11.07 A, density 1.19 g/cm3, surface area 2489.02 m2/g, accessible volume 0.53 cm3/g