Cd3H10(C9O7)2 crystallizes in the triclinic P-1 space group. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded in a 6-coordinate geometry to one O(1), one O(4), one O(6), one O(7), and two equivalent O(2) atoms. The Cd(1)-O(1) bond length is 2.22 Å. The Cd(1)-O(4) bond length is 2.25 Å. The Cd(1)-O(6) bond length is 2.24 Å. The Cd(1)-O(7) bond length is 2.58 Å. There is one shorter (2.44 Å) and one longer (2.67 Å) Cd(1)-O(2) bond length. In the second Cd site, Cd(2) is bonded in an octahedral geometry to two equivalent O(4), two equivalent O(5), and two equivalent O(7) atoms. Both Cd(2)-O(4) bond lengths are 2.38 Å. Both Cd(2)-O(5) bond lengths are 2.17 Å. Both Cd(2)-O(7) bond lengths are 2.52 Å. There are nine inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one C(4), one O(3), and one O(4) atom. The C(1)-C(4) bond length is 1.49 Å. The C(1)-O(3) bond length is 1.25 Å. The C(1)-O(4) bond length is 1.31 Å. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one C(6), one O(1), and one O(2) atom. The C(2)-C(6) bond length is 1.48 Å. The C(2)-O(1) bond length is 1.27 Å. The C(2)-O(2) bond length is 1.30 Å. In the third C site, C(3) is bonded in a distorted bent 120 degrees geometry to one C(8), one O(5), and one O(6) atom. The C(3)-C(8) bond length is 1.50 Å. The C(3)-O(5) bond length is 1.28 Å. The C(3)-O(6) bond length is 1.27 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one C(1), one C(5), and one C(9) atom. The C(4)-C(5) bond length is 1.40 Å. The C(4)-C(9) bond length is 1.40 Å. In the fifth C site, C(5) is bonded in a distorted single-bond geometry to one C(4), one C(6), and one H(1) atom. The C(5)-C(6) bond length is 1.39 Å. The C(5)-H(1) bond length is 1.09 Å. In the sixth C site, C(6) is bonded in a trigonal planar geometry to one C(2), one C(5), and one C(7) atom. The C(6)-C(7) bond length is 1.40 Å. In the seventh C site, C(7) is bonded in a distorted single-bond geometry to one C(6), one C(8), and one H(2) atom. The C(7)-C(8) bond length is 1.40 Å. The C(7)-H(2) bond length is 1.09 Å. In the eighth C site, C(8) is bonded in a trigonal planar geometry to one C(3), one C(7), and one C(9) atom. The C(8)-C(9) bond length is 1.40 Å. In the ninth C site, C(9) is bonded in a distorted single-bond geometry to one C(4), one C(8), and one H(3) atom. The C(9)-H(3) bond length is 1.09 Å. There are five inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(5) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(7) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(9) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one O(7) atom. The H(4)-O(7) bond length is 1.00 Å. In the fifth H site, H(5) is bonded in a single-bond geometry to one O(7) atom. The H(5)-O(7) bond length is 0.99 Å. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a water-like geometry to one Cd(1) and one C(2) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to two equivalent Cd(1) and one C(2) atom. In the third O site, O(3) is bonded in a single-bond geometry to one C(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Cd(1), one Cd(2), and one C(1) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one Cd(2) and one C(3) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Cd(1) and one C(3) atom. In the seventh O site, O(7) is bonded in a distorted water-like geometry to one Cd(1), one Cd(2), one H(4), and one H(5) atom. Linkers: 2 [O]C(=O)c1cc(C([O])=O)cc(C([O])=O)c1. Metal clusters: 3 [Cd]. The MOF has largest included sphere 2.92 A, density 2.51 g/cm3, surface area 2393.63 m2/g, accessible volume 0.10 cm3/g