Gd3C44H20(NO10)2 crystallizes in the cubic Im-3 space group. There are two inequivalent Gd sites. In the first Gd site, Gd(1) is bonded in a distorted pentagonal bipyramidal geometry to one O(1), one O(2), one O(3), one O(4), one O(5), one O(7), and one O(9) atom. The Gd(1)-O(1) bond length is 2.34 Å. The Gd(1)-O(2) bond length is 2.35 Å. The Gd(1)-O(3) bond length is 2.37 Å. The Gd(1)-O(4) bond length is 2.42 Å. The Gd(1)-O(5) bond length is 2.39 Å. The Gd(1)-O(7) bond length is 2.37 Å. The Gd(1)-O(9) bond length is 2.39 Å. In the second Gd site, Gd(2) is bonded in a 8-coordinate geometry to one O(10), one O(11), two equivalent O(6), two equivalent O(8), and two equivalent O(9) atoms. The Gd(2)-O(10) bond length is 2.57 Å. The Gd(2)-O(11) bond length is 2.56 Å. Both Gd(2)-O(6) bond lengths are 2.35 Å. Both Gd(2)-O(8) bond lengths are 2.37 Å. Both Gd(2)-O(9) bond lengths are 2.55 Å. There are twenty-four inequivalent C sites. In the first C site, C(21) is bonded in a distorted trigonal planar geometry to two equivalent C(9) and one H(9) atom. Both C(21)-C(9) bond lengths are 1.40 Å. The C(21)-H(9) bond length is 0.95 Å. In the second C site, C(22) is bonded in a distorted trigonal planar geometry to two equivalent C(18) and one H(10) atom. Both C(22)-C(18) bond lengths are 1.39 Å. The C(22)-H(10) bond length is 0.95 Å. In the third C site, C(23) is bonded in a trigonal planar geometry to one H(11) and two equivalent O(9) atoms. The C(23)-H(11) bond length is 0.95 Å. Both C(23)-O(9) bond lengths are 1.25 Å. In the fourth C site, C(24) is bonded in a distorted T-shaped geometry to one H(12), one O(10), and one O(11) atom. The C(24)-H(12) bond length is 0.95 Å. The C(24)-O(10) bond length is 1.29 Å. The C(24)-O(11) bond length is 1.20 Å. In the fifth C site, C(1) is bonded in a bent 120 degrees geometry to one C(2), one O(1), and one O(2) atom. The C(1)-C(2) bond length is 1.51 Å. The C(1)-O(1) bond length is 1.33 Å. The C(1)-O(2) bond length is 1.28 Å. In the sixth 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 1.41 Å. The C(2)-C(7) bond length is 1.39 Å. In the seventh 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 1.40 Å. The C(3)-H(1) bond length is 0.95 Å. In the eighth 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 1.40 Å. The C(4)-C(8) bond length is 1.51 Å. In the ninth C site, C(5) is bonded in a single-bond geometry to one C(4), one C(6), and one H(2) atom. The C(5)-C(6) bond length is 1.40 Å. The C(5)-H(2) bond length is 0.95 Å. In the tenth C site, C(6) is bonded in a distorted trigonal planar geometry to one C(20), one C(5), and one C(7) atom. The C(6)-C(20) bond length is 1.45 Å. The C(6)-C(7) bond length is 1.40 Å. In the eleventh C site, C(7) is bonded in a single-bond geometry to one C(2), one C(6), and one H(3) atom. The C(7)-H(3) bond length is 0.95 Å. In the twelfth C site, C(8) is bonded in a distorted trigonal planar geometry to one C(4), one C(9), and one N(1) atom. The C(8)-C(9) bond length is 1.39 Å. The C(8)-N(1) bond length is 1.36 Å. In the thirteenth C site, C(9) is bonded in a distorted trigonal planar geometry to one C(21), one C(8), and one H(4) atom. The C(9)-H(4) bond length is 0.95 Å. In the fourteenth C site, C(10) is bonded in a bent 120 degrees geometry to one C(11), one O(3), and one O(4) atom. The C(10)-C(11) bond length is 1.49 Å. The C(10)-O(3) bond length is 1.27 Å. The C(10)-O(4) bond length is 1.23 Å. In the fifteenth C site, C(11) is bonded in a trigonal planar geometry to one C(10), one C(12), and one C(16) atom. The C(11)-C(12) bond length is 1.39 Å. The C(11)-C(16) bond length is 1.46 Å. In the sixteenth C site, C(12) is bonded in a distorted single-bond geometry to one C(11), one C(13), and one H(5) atom. The C(12)-C(13) bond length is 1.39 Å. The C(12)-H(5) bond length is 0.95 Å. In the seventeenth C site, C(13) is bonded in a trigonal planar geometry to one C(12), one C(14), and one C(19) atom. The C(13)-C(14) bond length is 1.39 Å. The C(13)-C(19) bond length is 1.51 Å. In the eighteenth C site, C(14) is bonded in a distorted single-bond geometry to one C(13), one C(15), and one H(6) atom. The C(14)-C(15) bond length is 1.39 Å. The C(14)-H(6) bond length is 0.95 Å. In the nineteenth C site, C(15) is bonded in a trigonal planar geometry to one C(14), one C(16), and one C(17) atom. The C(15)-C(16) bond length is 1.39 Å. The C(15)-C(17) bond length is 1.53 Å. In the twentieth C site, C(16) is bonded in a distorted single-bond geometry to one C(11), one C(15), and one H(7) atom. The C(16)-H(7) bond length is 1.02 Å. In the twenty-first C site, C(17) is bonded in a 3-coordinate geometry to one C(15), one C(18), and one N(2) atom. The C(17)-C(18) bond length is 1.39 Å. The C(17)-N(2) bond length is 1.34 Å. In the twenty-second C site, C(18) is bonded in a distorted single-bond geometry to one C(17), one C(22), and one H(8) atom. The C(18)-H(8) bond length is 0.95 Å. In the twenty-third C site, C(19) is bonded in a distorted bent 120 degrees geometry to one C(13), one O(5), and one O(6) atom. The C(19)-O(5) bond length is 1.21 Å. The C(19)-O(6) bond length is 1.21 Å. In the twenty-fourth C site, C(20) is bonded in a distorted bent 120 degrees geometry to one C(6), one O(7), and one O(8) atom. The C(20)-O(7) bond length is 1.21 Å. The C(20)-O(8) bond length is 1.20 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(8) atoms. In the second N site, N(2) is bonded in a water-like geometry to two equivalent C(17) atoms. There are twelve inequivalent H sites. In the first H site, H(9) is bonded in a single-bond geometry to one C(21) atom. In the second H site, H(10) is bonded in a distorted bent 150 degrees geometry to one C(22) and one H(10) atom. The H(10)-H(10) bond length is 0.90 Å. In the third H site, H(11) is bonded in a single-bond geometry to one C(23) atom. In the fourth H site, H(12) is bonded in a single-bond geometry to one C(24) atom. In the fifth H site, H(1) is bonded in a single-bond geometry to one C(3) atom. In the sixth H site, H(2) is bonded in a single-bond geometry to one C(5) atom. In the seventh H site, H(3) is bonded in a single-bond geometry to one C(7) atom. In the eighth H site, H(4) is bonded in a single-bond geometry to one C(9) atom. In the ninth H site, H(5) is bonded in a single-bond geometry to one C(12) atom. In the tenth H site, H(6) is bonded in a single-bond geometry to one C(14) atom. In the eleventh H site, H(7) is bonded in a single-bond geometry to one C(16) atom. In the twelfth H site, H(8) is bonded in a single-bond geometry to one C(18) atom. There are eleven inequivalent O sites. In the first O site, O(9) is bonded in a 3-coordinate geometry to one Gd(1), one Gd(2), and one C(23) atom. In the second O site, O(10) is bonded in a distorted single-bond geometry to one Gd(2) and one C(24) atom. In the third O site, O(11) is bonded in a distorted single-bond geometry to one Gd(2) and one C(24) atom. In the fourth O site, O(1) is bonded in an L-shaped geometry to one Gd(1) and one C(1) atom. In the fifth O site, O(2) is bonded in an L-shaped geometry to one Gd(1) and one C(1) atom. In the sixth O site, O(3) is bonded in a distorted L-shaped geometry to one Gd(1) and one C(10) atom. In the seventh O site, O(4) is bonded in a distorted L-shaped geometry to one Gd(1) and one C(10) atom. In the eighth O site, O(5) is bonded in a distorted bent 150 degrees geometry to one Gd(1) and one C(19) atom. In the ninth O site, O(6) is bonded in a distorted bent 120 degrees geometry to one Gd(2) and one C(19) atom. In the tenth O site, O(7) is bonded in a distorted bent 120 degrees geometry to one Gd(1) and one C(20) atom. In the eleventh O site, O(8) is bonded in a distorted bent 150 degrees geometry to one Gd(2) and one C(20) atom. Linkers: 24 [O]C(=O)c1cc(C([O])=O)cc(C2=C[CH]C=C(c3cc(C([O])=O)cc(C([O])=O)c3)[N]2)c1 ,24 [O]C(=O)c1cc(C([O])=O)cc(-c2cccc(-c3cc(C([O])=O)cc(C([O])=O)c3)n2)c1. Metal clusters: 19 O=[C]O[Gd]123(O[C]O[Gd]4(OC=O)(O[C]O1)O[C]O[Gd]1(O[C]=O)(O[C]O4)(O[C]O1)O[CH]O2)O[C]O3 ,5 O=[C]O[Gd]123(O[C]O[Gd]4(O[C]O1)O[C]O[Gd]1(O[C]=O)(O[C]O4)(O[C]O1)O[CH]O2)O[C]O3.[O]C=O. The MOF has largest included sphere 20.28 A, density 1.00 g/cm3, surface area 3205.20 m2/g, accessible volume 0.73 cm3/g