GdC6H10O11 crystallizes in the monoclinic P2_1/c space group. Gd(1) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(11), one O(4), one O(6), one O(7), one O(8), and one O(9) atom. The Gd(1)-O(1) bond length is 2.34 Å. The Gd(1)-O(10) bond length is 2.39 Å. The Gd(1)-O(11) bond length is 2.46 Å. The Gd(1)-O(4) bond length is 2.37 Å. The Gd(1)-O(6) bond length is 2.44 Å. The Gd(1)-O(7) bond length is 2.34 Å. The Gd(1)-O(8) bond length is 2.44 Å. The Gd(1)-O(9) bond length is 2.44 Å. There are six inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one C(2), one C(3), and one C(5) atom. The C(1)-C(2) bond length is 1.50 Å. The C(1)-C(3) bond length is 1.40 Å. The C(1)-C(5) bond length is 1.40 Å. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one C(1), one O(1), and one O(2) atom. The C(2)-O(1) bond length is 1.26 Å. The C(2)-O(2) bond length is 1.28 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one C(1), one C(4), and one C(5) atom. The C(3)-C(4) bond length is 1.51 Å. The C(3)-C(5) bond length is 1.40 Å. In the fourth C site, C(4) is bonded in a distorted bent 120 degrees geometry to one C(3), one O(3), and one O(4) atom. The C(4)-O(3) bond length is 1.25 Å. The C(4)-O(4) bond length is 1.29 Å. In the fifth C site, C(5) is bonded in a trigonal planar geometry to one C(1), one C(3), and one C(6) atom. The C(5)-C(6) bond length is 1.51 Å. In the sixth C site, C(6) is bonded in a distorted bent 120 degrees geometry to one C(5), one O(5), and one O(6) atom. The C(6)-O(5) bond length is 1.27 Å. The C(6)-O(6) bond length is 1.28 Å. There are ten inequivalent H sites. In the first H site, H(1) is bonded in a distorted single-bond geometry to one O(3) and one O(7) atom. The H(1)-O(3) bond length is 1.64 Å. The H(1)-O(7) bond length is 1.01 Å. In the second H site, H(2) is bonded in a distorted single-bond geometry to one O(5) and one O(7) atom. The H(2)-O(5) bond length is 1.66 Å. The H(2)-O(7) bond length is 1.00 Å. In the third H site, H(3) is bonded in a single-bond geometry to one O(5) and one O(8) atom. The H(3)-O(5) bond length is 1.70 Å. The H(3)-O(8) bond length is 1.00 Å. In the fourth H site, H(4) is bonded in a single-bond geometry to one O(8) atom. The H(4)-O(8) bond length is 0.99 Å. In the fifth H site, H(5) is bonded in a single-bond geometry to one O(9) atom. The H(5)-O(9) bond length is 0.99 Å. In the sixth H site, H(6) is bonded in a single-bond geometry to one O(9) atom. The H(6)-O(9) bond length is 0.97 Å. In the seventh H site, H(7) is bonded in a single-bond geometry to one O(10) atom. The H(7)-O(10) bond length is 0.99 Å. In the eighth H site, H(8) is bonded in a single-bond geometry to one O(10) and one O(4) atom. The H(8)-O(10) bond length is 1.00 Å. The H(8)-O(4) bond length is 1.69 Å. In the ninth H site, H(9) is bonded in a single-bond geometry to one O(11) atom. The H(9)-O(11) bond length is 0.97 Å. In the tenth H site, H(10) is bonded in a single-bond geometry to one O(11) atom. The H(10)-O(11) bond length is 1.00 Å. There are eleven inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Gd(1) and one C(2) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one C(2) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one C(4) and one H(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Gd(1), one C(4), and one H(8) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one C(6), one H(2), and one H(3) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one Gd(1) and one C(6) atom. In the seventh O site, O(7) is bonded in a distorted water-like geometry to one Gd(1), one H(1), and one H(2) atom. In the eighth O site, O(8) is bonded in a water-like geometry to one Gd(1), one H(3), and one H(4) atom. In the ninth O site, O(9) is bonded in a distorted water-like geometry to one Gd(1), one H(5), and one H(6) atom. In the tenth O site, O(10) is bonded in a distorted water-like geometry to one Gd(1), one H(7), and one H(8) atom. In the eleventh O site, O(11) is bonded in a water-like geometry to one Gd(1), one H(10), and one H(9) atom. Linkers: 2 [O]C(=O)c1c(C([O])=O)c(C([O])=O)c(C([O])=O)c(C([O])=O)c1C([O])=O. Metal clusters: 4 O.O.O.O.O.O=[C]O[Gd]O[C]=O.[O][C]=O. The MOF has largest included sphere 2.72 A, density 2.36 g/cm3, surface area 2508.30 m2/g, accessible volume 0.10 cm3/g