Eu2H9(C7O4)3(CH)3 crystallizes in the orthorhombic Pnma space group. The structure consists of twelve 02329_fluka molecules inside a Eu2H9(C7O4)3 framework. In the Eu2H9(C7O4)3 framework, Eu(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(5), one O(6), two equivalent O(3), and two equivalent O(4) atoms. The Eu(1)-O(1) bond length is 2.32 Å. The Eu(1)-O(2) bond length is 2.34 Å. The Eu(1)-O(5) bond length is 2.49 Å. The Eu(1)-O(6) bond length is 2.38 Å. There is one shorter (2.44 Å) and one longer (2.69 Å) Eu(1)-O(3) bond length. There is one shorter (2.53 Å) and one longer (2.75 Å) Eu(1)-O(4) bond length. There are eleven inequivalent C sites. In the first C site, C(13) is bonded in a distorted single-bond geometry to two equivalent C(10) and one H(7) atom. Both C(13)-C(10) bond lengths are 1.39 Å. The C(13)-H(7) bond length is 0.93 Å. In the second 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 1.26 Å. The C(1)-O(2) bond length is 1.26 Å. In the third C site, C(2) is bonded in a trigonal planar geometry to one C(1), one C(3), and one C(7) atom. The C(2)-C(3) bond length is 1.39 Å. The C(2)-C(7) bond length is 1.39 Å. In the fourth C site, C(3) is bonded in a distorted single-bond geometry to one C(2), one C(4), and one H(1) atom. The C(3)-C(4) bond length is 1.38 Å. The C(3)-H(1) bond length is 0.93 Å. In the fifth C site, C(4) is bonded in a trigonal planar geometry to one C(3), one C(5), and one C(8) atom. The C(4)-C(5) bond length is 1.39 Å. The C(4)-C(8) bond length is 1.50 Å. In the sixth C site, C(5) is bonded in a distorted single-bond geometry to one C(4) and one H(2) atom. The C(5)-H(2) bond length is 0.93 Å. In the seventh C site, C(7) is bonded in a distorted single-bond geometry to one C(2) and one H(4) atom. The C(7)-H(4) bond length is 0.93 Å. In the eighth C site, C(8) is bonded in a bent 120 degrees geometry to one C(4), one O(3), and one O(5) atom. The C(8)-O(3) bond length is 1.28 Å. The C(8)-O(5) bond length is 1.25 Å. In the ninth C site, C(9) is bonded in a distorted bent 120 degrees geometry to one C(10), one O(4), and one O(6) atom. The C(9)-C(10) bond length is 1.49 Å. The C(9)-O(4) bond length is 1.28 Å. The C(9)-O(6) bond length is 1.26 Å. In the tenth C site, C(10) is bonded in a trigonal planar geometry to one C(11), one C(13), and one C(9) atom. The C(10)-C(11) bond length is 1.39 Å. In the eleventh C site, C(11) is bonded in a distorted single-bond geometry to one C(10) and one H(5) atom. The C(11)-H(5) bond length is 0.93 Å. There are five 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(5) atom. In the third H site, H(4) is bonded in a single-bond geometry to one C(7) atom. In the fourth H site, H(5) is bonded in a single-bond geometry to one C(11) atom. In the fifth H site, H(7) is bonded in a single-bond geometry to one C(13) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Eu(1) and one C(1) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Eu(1) and one C(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to two equivalent Eu(1) and one C(8) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to two equivalent Eu(1) and one C(9) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Eu(1) and one C(8) atom. In the sixth O site, O(6) is bonded in a water-like geometry to one Eu(1) and one C(9) atom. Linkers: 12 [O]C(=O)c1cccc(C([O])=O)c1. Metal clusters: 8 [Eu]. The MOF has largest included sphere 7.64 A, density 1.41 g/cm3, surface area 2890.77 m2/g, accessible volume 0.35 cm3/g