GdCdC21N5H11O8CH crystallizes in the monoclinic P2_1/c space group. The structure consists of four 02329_fluka molecules inside a GdCdC21N5H11O8 framework. In the GdCdC21N5H11O8 framework, Gd(1) is bonded in a 9-coordinate geometry to one N(1), one O(1), one O(3), one O(4), one O(5), one O(6), one O(7), and two equivalent O(2) atoms. The Gd(1)-N(1) bond length is 2.59 Å. The Gd(1)-O(1) bond length is 2.54 Å. The Gd(1)-O(3) bond length is 2.46 Å. The Gd(1)-O(4) bond length is 2.27 Å. The Gd(1)-O(5) bond length is 2.48 Å. The Gd(1)-O(6) bond length is 2.46 Å. The Gd(1)-O(7) bond length is 2.39 Å. There is one shorter (2.32 Å) and one longer (2.59 Å) Gd(1)-O(2) bond length. Cd(1) is bonded in an octahedral geometry to one N(2), one N(3), one N(4), one N(5), one O(1), and one O(8) atom. The Cd(1)-N(2) bond length is 2.32 Å. The Cd(1)-N(3) bond length is 2.41 Å. The Cd(1)-N(4) bond length is 2.39 Å. The Cd(1)-N(5) bond length is 2.31 Å. The Cd(1)-O(1) bond length is 2.40 Å. The Cd(1)-O(8) bond length is 2.31 Å. There are twenty-one inequivalent C sites. In the first C site, C(19) is bonded in a distorted trigonal planar geometry to one C(20), one C(22), and one H(11) atom. The C(19)-C(20) bond length is 1.39 Å. The C(19)-C(22) bond length is 1.40 Å. The C(19)-H(11) bond length is 1.09 Å. In the second C site, C(20) is bonded in a distorted trigonal planar geometry to one C(19), one N(3), and one H(12) atom. The C(20)-N(3) bond length is 1.35 Å. The C(20)-H(12) bond length is 1.09 Å. In the third C site, C(21) is bonded in a distorted bent 120 degrees geometry to one C(22), one O(5), and one O(6) atom. The C(21)-C(22) bond length is 1.50 Å. The C(21)-O(5) bond length is 1.27 Å. The C(21)-O(6) bond length is 1.28 Å. In the fourth C site, C(22) is bonded in a trigonal planar geometry to one C(18), one C(19), and one C(21) atom. The C(22)-C(18) bond length is 1.40 Å. In the fifth C site, C(1) is bonded in a trigonal planar geometry to one C(10), one C(11), and one C(4) atom. The C(1)-C(10) bond length is 1.40 Å. The C(1)-C(11) bond length is 1.40 Å. The C(1)-C(4) bond length is 1.46 Å. In the sixth C site, C(2) is bonded in a distorted bent 120 degrees geometry to one C(3), one O(1), and one O(2) atom. The C(2)-C(3) bond length is 1.46 Å. The C(2)-O(1) bond length is 1.29 Å. The C(2)-O(2) bond length is 1.27 Å. In the seventh C site, C(3) is bonded in a distorted single-bond geometry to one C(2), one C(5), and one N(5) atom. The C(3)-C(5) bond length is 1.41 Å. The C(3)-N(5) bond length is 1.38 Å. In the eighth C site, C(4) is bonded in a distorted trigonal planar geometry to one C(1), one N(2), and one N(5) atom. The C(4)-N(2) bond length is 1.36 Å. The C(4)-N(5) bond length is 1.35 Å. In the ninth C site, C(5) is bonded in a distorted single-bond geometry to one C(3) and one N(2) atom. The C(5)-N(2) bond length is 1.37 Å. In the tenth C site, C(6) is bonded in a distorted bent 120 degrees geometry to one O(4) and one O(8) atom. The C(6)-O(4) bond length is 1.27 Å. The C(6)-O(8) bond length is 1.27 Å. In the eleventh C site, C(7) is bonded in a distorted bent 120 degrees geometry to one C(8), one O(3), and one O(7) atom. The C(7)-C(8) bond length is 1.51 Å. The C(7)-O(3) bond length is 1.27 Å. The C(7)-O(7) bond length is 1.27 Å. In the twelfth C site, C(8) is bonded in a trigonal planar geometry to one C(14), one C(7), and one C(9) atom. The C(8)-C(14) bond length is 1.40 Å. The C(8)-C(9) bond length is 1.40 Å. In the thirteenth C site, C(9) is bonded in a distorted single-bond geometry to one C(8) and one H(1) atom. The C(9)-H(1) bond length is 1.09 Å. In the fourteenth C site, C(10) is bonded in a distorted bent 120 degrees geometry to one C(1), one N(1), and one H(2) atom. The C(10)-N(1) bond length is 1.34 Å. The C(10)-H(2) bond length is 1.09 Å. In the fifteenth C site, C(11) is bonded in a distorted single-bond geometry to one C(1) and one H(3) atom. The C(11)-H(3) bond length is 1.09 Å. In the sixteenth C site, C(13) is bonded in a distorted bent 120 degrees geometry to one N(1) and one H(5) atom. The C(13)-N(1) bond length is 1.35 Å. The C(13)-H(5) bond length is 1.09 Å. In the seventeenth C site, C(14) is bonded in a distorted single-bond geometry to one C(16), one C(8), and one H(6) atom. The C(14)-C(16) bond length is 1.39 Å. The C(14)-H(6) bond length is 1.09 Å. In the eighteenth C site, C(15) is bonded in a distorted bent 120 degrees geometry to one N(4) and one H(7) atom. The C(15)-N(4) bond length is 1.35 Å. The C(15)-H(7) bond length is 1.09 Å. In the nineteenth C site, C(16) is bonded in a distorted trigonal planar geometry to one C(14), one N(4), and one H(8) atom. The C(16)-N(4) bond length is 1.35 Å. The C(16)-H(8) bond length is 1.09 Å. In the twentieth C site, C(17) is bonded in a distorted trigonal planar geometry to one C(18), one N(3), and one H(9) atom. The C(17)-C(18) bond length is 1.39 Å. The C(17)-N(3) bond length is 1.35 Å. The C(17)-H(9) bond length is 1.09 Å. In the twenty-first C site, C(18) is bonded in a distorted single-bond geometry to one C(17), one C(22), and one H(10) atom. The C(18)-H(10) bond length is 1.09 Å. There are five inequivalent N sites. In the first N site, N(1) is bonded in a distorted trigonal planar geometry to one Gd(1), one C(10), and one C(13) atom. In the second N site, N(2) is bonded in a distorted trigonal planar geometry to one Cd(1), one C(4), and one C(5) atom. In the third N site, N(3) is bonded in a trigonal planar geometry to one Cd(1), one C(17), and one C(20) atom. In the fourth N site, N(4) is bonded in a trigonal planar geometry to one Cd(1), one C(15), and one C(16) atom. In the fifth N site, N(5) is bonded in a distorted trigonal planar geometry to one Cd(1), one C(3), and one C(4) atom. There are eleven inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(9) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(10) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(11) atom. In the fourth H site, H(5) is bonded in a single-bond geometry to one C(13) atom. In the fifth H site, H(6) is bonded in a single-bond geometry to one C(14) atom. In the sixth H site, H(7) is bonded in a single-bond geometry to one C(15) atom. In the seventh H site, H(8) is bonded in a single-bond geometry to one C(16) atom. In the eighth H site, H(9) is bonded in a single-bond geometry to one C(17) atom. In the ninth H site, H(10) is bonded in a single-bond geometry to one C(18) atom. In the tenth H site, H(11) is bonded in a single-bond geometry to one C(19) atom. In the eleventh H site, H(12) is bonded in a single-bond geometry to one C(20) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Gd(1), one Cd(1), and one C(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to two equivalent Gd(1) and one C(2) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Gd(1) and one C(7) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Gd(1) and one C(6) atom. In the fifth O site, O(5) is bonded in a distorted L-shaped geometry to one Gd(1) and one C(21) atom. In the sixth O site, O(6) is bonded in a distorted L-shaped geometry to one Gd(1) and one C(21) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Gd(1) and one C(7) atom. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one Cd(1) and one C(6) atom. Linkers: 1 [O]C(=O)[C]1N=C(c2cccnc2)N=C1C([O])=O ,3 [O]C(=O)C1=C(C([O])=O)N=C(c2cccnc2)[N]1 ,8 [O]C(=O)c1ccncc1. Metal clusters: 4 [Gd] ,4 [Cd]. The MOF has largest included sphere 4.28 A, density 1.83 g/cm3, surface area 3097.53 m2/g, accessible volume 0.16 cm3/g