BiH8(C2O)8 is gamma plutonium structured and crystallizes in the monoclinic C2/c space group. The structure is zero-dimensional and consists of four BiH8(C2O)8 clusters. There are eight inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(1), and one O(2) atom. The C(1)-C(2) bond length is 1.50 Å. The C(1)-O(1) bond length is 1.25 Å. The C(1)-O(2) bond length is 1.24 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(1), one C(3), and one C(4) atom. The C(2)-C(3) bond length is 1.38 Å. The C(2)-C(4) bond length is 1.39 Å. In the third C site, C(4) is bonded in a distorted single-bond geometry to one C(2) and one H(2) atom. The C(4)-H(2) bond length is 0.93 Å. In the fourth C site, C(5) is bonded in a bent 120 degrees geometry to one C(6), one O(3), and one O(4) atom. The C(5)-C(6) bond length is 1.49 Å. The C(5)-O(3) bond length is 1.28 Å. The C(5)-O(4) bond length is 1.25 Å. In the fifth C site, C(6) is bonded in a trigonal planar geometry to one C(5), one C(7), and one C(8) atom. The C(6)-C(7) bond length is 1.38 Å. The C(6)-C(8) bond length is 1.40 Å. In the sixth C site, C(7) is bonded in a distorted single-bond geometry to one C(6) and one H(3) atom. The C(7)-H(3) bond length is 0.93 Å. In the seventh C site, C(8) is bonded in a distorted single-bond geometry to one C(6) and one H(4) atom. The C(8)-H(4) bond length is 0.93 Å. In the eighth C site, C(3) is bonded in a distorted single-bond geometry to one C(2) and one H(1) atom. The C(3)-H(1) bond length is 0.93 Å. Bi(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. Both Bi(1)-O(1) bond lengths are 2.41 Å. Both Bi(1)-O(2) bond lengths are 2.65 Å. Both Bi(1)-O(3) bond lengths are 2.28 Å. Both Bi(1)-O(4) bond lengths are 2.71 Å. There are four inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(3) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(4) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(7) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(8) atom. There are four inequivalent O sites. In the first O site, O(3) is bonded in a water-like geometry to one C(5) and one Bi(1) atom. In the second O site, O(4) is bonded in a single-bond geometry to one C(5) and one Bi(1) atom. In the third O site, O(1) is bonded in a distorted water-like geometry to one C(1) and one Bi(1) atom. In the fourth O site, O(2) is bonded in a single-bond geometry to one C(1) and one Bi(1) atom. Linkers: 9 [O]C(=O)c1ccc(C([O])=O)cc1. Metal clusters: 4 O=[C]O[Bi](O[C]=O)O[C]=O.[O][C]=O. RCSR code: dia. The MOF has largest included sphere 4.48 A, density 1.47 g/cm3, surface area 3204.85 m2/g, accessible volume 0.35 cm3/g