Eu3C43H19(NO10)2CH crystallizes in the cubic Im-3 space group. The structure consists of twenty-four 02329_fluka molecules inside a Eu3C43H19(NO10)2 framework. In the Eu3C43H19(NO10)2 framework, there are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a distorted pentagonal bipyramidal geometry to one O(1), one O(11), one O(2), one O(3), one O(4), one O(6), and one O(9) atom. The Eu(1)-O(1) bond length is 2.41 Å. The Eu(1)-O(11) bond length is 2.40 Å. The Eu(1)-O(2) bond length is 2.38 Å. The Eu(1)-O(3) bond length is 2.35 Å. The Eu(1)-O(4) bond length is 2.44 Å. The Eu(1)-O(6) bond length is 2.38 Å. The Eu(1)-O(9) bond length is 2.38 Å. In the second Eu site, Eu(2) is bonded in a 8-coordinate geometry to one O(5), one O(8), two equivalent O(10), two equivalent O(11), and two equivalent O(7) atoms. The Eu(2)-O(5) bond length is 2.60 Å. The Eu(2)-O(8) bond length is 2.62 Å. Both Eu(2)-O(10) bond lengths are 2.33 Å. Both Eu(2)-O(11) bond lengths are 2.53 Å. Both Eu(2)-O(7) bond lengths are 2.41 Å. There are twenty-three inequivalent C sites. In the first C site, C(23) is bonded in a trigonal planar geometry to one H(6) and two equivalent O(11) atoms. The C(23)-H(6) bond length is 0.93 Å. Both C(23)-O(11) bond lengths are 1.30 Å. In the second C site, C(24) is bonded in a distorted trigonal planar geometry to one C(10), one C(14), and one N(2) atom. The C(24)-C(10) bond length is 1.39 Å. The C(24)-C(14) bond length is 1.55 Å. The C(24)-N(2) bond length is 1.34 Å. In the third C site, C(1) is bonded in a distorted single-bond geometry to one C(18), one C(3), and one H(9) atom. The C(1)-C(18) bond length is 1.39 Å. The C(1)-C(3) bond length is 1.39 Å. The C(1)-H(9) bond length is 0.93 Å. In the fourth C site, C(2) is bonded in a bent 120 degrees geometry to one C(12), one O(3), and one O(9) atom. The C(2)-C(12) bond length is 1.50 Å. The C(2)-O(3) bond length is 1.24 Å. The C(2)-O(9) bond length is 1.31 Å. In the fifth C site, C(3) is bonded in a trigonal planar geometry to one C(1), one C(15), and one C(5) atom. The C(3)-C(15) bond length is 1.39 Å. The C(3)-C(5) bond length is 1.49 Å. In the sixth C site, C(4) is bonded in a trigonal planar geometry to one C(15), one C(7), and one C(8) atom. The C(4)-C(15) bond length is 1.39 Å. The C(4)-C(7) bond length is 1.51 Å. The C(4)-C(8) bond length is 1.39 Å. In the seventh C site, C(5) is bonded in a bent 120 degrees geometry to one C(3), one O(1), and one O(4) atom. The C(5)-O(1) bond length is 1.23 Å. The C(5)-O(4) bond length is 1.22 Å. In the eighth C site, C(6) is bonded in a distorted bent 120 degrees geometry to one C(17), one O(10), and one O(6) atom. The C(6)-C(17) bond length is 1.50 Å. The C(6)-O(10) bond length is 1.23 Å. The C(6)-O(6) bond length is 1.23 Å. In the ninth C site, C(7) is bonded in a distorted trigonal planar geometry to one C(20), one C(4), and one N(1) atom. The C(7)-C(20) bond length is 1.40 Å. The C(7)-N(1) bond length is 1.34 Å. In the tenth C site, C(8) is bonded in a single-bond geometry to one C(18), one C(4), and one H(11) atom. The C(8)-C(18) bond length is 1.39 Å. The C(8)-H(11) bond length is 0.93 Å. In the eleventh C site, C(9) is bonded in a distorted single-bond geometry to one C(14), one C(17), and one H(8) atom. The C(9)-C(14) bond length is 1.39 Å. The C(9)-C(17) bond length is 1.39 Å. The C(9)-H(8) bond length is 0.93 Å. In the twelfth C site, C(10) is bonded in a distorted single-bond geometry to one C(24) and one H(5) atom. The C(10)-H(5) bond length is 0.93 Å. In the thirteenth C site, C(11) is bonded in a distorted single-bond geometry to one C(12), one C(17), and one H(7) atom. The C(11)-C(12) bond length is 1.39 Å. The C(11)-C(17) bond length is 1.39 Å. The C(11)-H(7) bond length is 0.93 Å. In the fourteenth C site, C(12) is bonded in a trigonal planar geometry to one C(11), one C(16), and one C(2) atom. The C(12)-C(16) bond length is 1.39 Å. In the fifteenth C site, C(13) is bonded in a distorted trigonal planar geometry to two equivalent C(20) and one H(3) atom. Both C(13)-C(20) bond lengths are 1.40 Å. The C(13)-H(3) bond length is 0.93 Å. In the sixteenth C site, C(14) is bonded in a trigonal planar geometry to one C(16), one C(24), and one C(9) atom. The C(14)-C(16) bond length is 1.39 Å. In the seventeenth C site, C(15) is bonded in a distorted single-bond geometry to one C(3), one C(4), and one H(12) atom. The C(15)-H(12) bond length is 0.93 Å. In the eighteenth C site, C(16) is bonded in a distorted single-bond geometry to one C(12), one C(14), and one H(4) atom. The C(16)-H(4) bond length is 0.93 Å. In the nineteenth C site, C(17) is bonded in a trigonal planar geometry to one C(11), one C(6), and one C(9) atom. In the twentieth C site, C(18) is bonded in a trigonal planar geometry to one C(1), one C(21), and one C(8) atom. The C(18)-C(21) bond length is 1.51 Å. In the twenty-first C site, C(19) is bonded in a 3-coordinate geometry to one H(10), one O(5), and one O(8) atom. The C(19)-H(10) bond length is 0.93 Å. The C(19)-O(5) bond length is 1.56 Å. The C(19)-O(8) bond length is 1.43 Å. In the twenty-second C site, C(20) is bonded in a distorted single-bond geometry to one C(13), one C(7), and one H(2) atom. The C(20)-H(2) bond length is 0.93 Å. In the twenty-third C site, C(21) is bonded in a bent 120 degrees geometry to one C(18), one O(2), and one O(7) atom. The C(21)-O(2) bond length is 1.21 Å. The C(21)-O(7) bond length is 1.23 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded in a bent 120 degrees geometry to two equivalent C(7) atoms. In the second N site, N(2) is bonded in a bent 120 degrees geometry to two equivalent C(24) atoms. There are eleven inequivalent H sites. In the first H site, H(2) is bonded in a single-bond geometry to one C(20) atom. In the second H site, H(3) is bonded in a single-bond geometry to one C(13) atom. In the third H site, H(4) is bonded in a single-bond geometry to one C(16) atom. In the fourth H site, H(5) is bonded in a single-bond geometry to one C(10) atom. In the fifth H site, H(6) is bonded in a single-bond geometry to one C(23) atom. In the sixth H site, H(7) is bonded in a single-bond geometry to one C(11) atom. In the seventh H site, H(8) is bonded in a single-bond geometry to one C(9) atom. In the eighth H site, H(9) is bonded in a single-bond geometry to one C(1) atom. In the ninth H site, H(10) is bonded in a single-bond geometry to one C(19) atom. In the tenth H site, H(11) is bonded in a single-bond geometry to one C(8) atom. In the eleventh H site, H(12) is bonded in a single-bond geometry to one C(15) atom. There are eleven inequivalent O sites. In the first O site, O(7) is bonded in a distorted bent 120 degrees geometry to one Eu(2) and one C(21) atom. In the second O site, O(8) is bonded in a distorted single-bond geometry to one Eu(2) and one C(19) atom. In the third O site, O(9) is bonded in a distorted L-shaped geometry to one Eu(1) and one C(2) atom. In the fourth O site, O(10) is bonded in a distorted bent 150 degrees geometry to one Eu(2) and one C(6) atom. In the fifth O site, O(11) is bonded in a 3-coordinate geometry to one Eu(1), one Eu(2), and one C(23) atom. In the sixth O site, O(1) is bonded in a distorted L-shaped geometry to one Eu(1) and one C(5) atom. In the seventh O site, O(2) is bonded in a bent 150 degrees geometry to one Eu(1) and one C(21) atom. In the eighth O site, O(3) is bonded in an L-shaped geometry to one Eu(1) and one C(2) atom. In the ninth O site, O(4) is bonded in a distorted L-shaped geometry to one Eu(1) and one C(5) atom. In the tenth O site, O(5) is bonded in a 2-coordinate geometry to one Eu(2) and one C(19) atom. In the eleventh O site, O(6) is bonded in a bent 120 degrees geometry to one Eu(1) and one C(6) atom. Linkers: 24 [O]C(=O)c1cc(C([O])=O)cc(-c2cccc(-c3cc(C([O])=O)cc(C([O])=O)c3)n2)c1. Metal clusters: 10 O=[C]O[Eu]123(O[C]O[Eu]4(O[C]O1)O[C]O[Eu]1(O[C]=O)(O[C]O4)(O[C]O1)O[CH]O2)O[C]O3.[O]C=O ,2 O=[C]O[Eu]123(O[C]O[Eu]4(OC=O)(O[C]O1)O[C]O[Eu]1(O[C]=O)(O[C]O4)(O[C]O1)O[CH]O2)O[C]O3. The MOF has largest included sphere 20.28 A, density 0.98 g/cm3, surface area 3283.93 m2/g, accessible volume 0.68 cm3/g