GdH6(C3O)6(CH)6 crystallizes in the triclinic P-1 space group. The structure consists of twelve 02329_fluka molecules inside a GdH6(C3O)6 framework. In the GdH6(C3O)6 framework, Gd(1) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(4), one O(5), one O(6), and two equivalent O(3) atoms. The Gd(1)-O(1) bond length is 2.45 Å. The Gd(1)-O(2) bond length is 2.33 Å. The Gd(1)-O(4) bond length is 2.47 Å. The Gd(1)-O(5) bond length is 2.44 Å. The Gd(1)-O(6) bond length is 2.51 Å. There is one shorter (2.43 Å) and one longer (2.55 Å) Gd(1)-O(3) bond length. There are eighteen 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(1), and one O(4) atom. The C(1)-C(4) bond length is 1.46 Å. The C(1)-O(1) bond length is 1.27 Å. The C(1)-O(4) bond length is 1.25 Å. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one C(5), one O(2), and one O(5) atom. The C(2)-C(5) bond length is 1.51 Å. The C(2)-O(2) bond length is 1.26 Å. The C(2)-O(5) bond length is 1.25 Å. In the third C site, C(3) is bonded in a distorted bent 120 degrees geometry to one C(6), one O(3), and one O(6) atom. The C(3)-C(6) bond length is 1.48 Å. The C(3)-O(3) bond length is 1.26 Å. The C(3)-O(6) bond length is 1.25 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one C(1), one C(22), and one C(7) atom. The C(4)-C(22) bond length is 1.42 Å. The C(4)-C(7) bond length is 1.41 Å. In the fifth C site, C(5) is bonded in a trigonal planar geometry to one C(2), one C(23), and one C(8) atom. The C(5)-C(23) bond length is 1.39 Å. The C(5)-C(8) bond length is 1.39 Å. In the sixth C site, C(6) is bonded in a trigonal planar geometry to one C(24), one C(3), and one C(9) atom. The C(6)-C(24) bond length is 1.41 Å. The C(6)-C(9) bond length is 1.40 Å. In the seventh C site, C(7) is bonded in a trigonal planar geometry to one C(10), one C(22), and one C(4) atom. The C(7)-C(10) bond length is 1.43 Å. The C(7)-C(22) bond length is 1.44 Å. In the eighth C site, C(8) is bonded in a trigonal planar geometry to one C(11), one C(23), and one C(5) atom. The C(8)-C(11) bond length is 1.42 Å. The C(8)-C(23) bond length is 1.43 Å. In the ninth C site, C(9) is bonded in a trigonal planar geometry to one C(12), one C(24), and one C(6) atom. The C(9)-C(12) bond length is 1.44 Å. The C(9)-C(24) bond length is 1.43 Å. In the tenth C site, C(10) is bonded in a single-bond geometry to one C(7) and one H(1) atom. The C(10)-H(1) bond length is 0.93 Å. In the eleventh C site, C(11) is bonded in a distorted single-bond geometry to one C(8) and one H(2) atom. The C(11)-H(2) bond length is 0.93 Å. In the twelfth C site, C(12) is bonded in a single-bond geometry to one C(9) and one H(3) atom. The C(12)-H(3) bond length is 0.93 Å. In the thirteenth C site, C(19) is bonded in a distorted single-bond geometry to one C(22) and one H(10) atom. The C(19)-C(22) bond length is 1.43 Å. The C(19)-H(10) bond length is 0.93 Å. In the fourteenth C site, C(20) is bonded in a distorted single-bond geometry to one C(23) and one H(11) atom. The C(20)-C(23) bond length is 1.42 Å. The C(20)-H(11) bond length is 0.93 Å. In the fifteenth C site, C(21) is bonded in a distorted single-bond geometry to one C(24) and one H(12) atom. The C(21)-C(24) bond length is 1.44 Å. The C(21)-H(12) bond length is 0.93 Å. In the sixteenth C site, C(22) is bonded in a trigonal planar geometry to one C(19), one C(4), and one C(7) atom. In the seventeenth C site, C(23) is bonded in a trigonal planar geometry to one C(20), one C(5), and one C(8) atom. In the eighteenth C site, C(24) is bonded in a trigonal planar geometry to one C(21), one C(6), and one C(9) atom. There are six inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(10) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(11) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(12) atom. In the fourth H site, H(10) is bonded in a single-bond geometry to one C(19) atom. In the fifth H site, H(11) is bonded in a single-bond geometry to one C(20) atom. In the sixth H site, H(12) is bonded in a single-bond geometry to one C(21) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Gd(1) and one C(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Gd(1) and one C(2) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to two equivalent Gd(1) and one C(3) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Gd(1) and one C(1) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Gd(1) and one C(2) atom. In the sixth O site, O(6) is bonded in a single-bond geometry to one Gd(1) and one C(3) atom. Linkers: 3 [O]C(=O)c1c2ccccc2c(C([O])=O)c2ccccc12. Metal clusters: 1 [C]1O[Gd]234(O1)O[C]O[Gd]1(O[C]O1)(O[C]O2)(O[C]O3)O[C]O4. RCSR code: pcu. The MOF has largest included sphere 6.44 A, density 1.27 g/cm3, surface area 3405.05 m2/g, accessible volume 0.38 cm3/g