Gd2C5N2H8S2O15 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Gd sites. In the first Gd site, Gd(1) is bonded in a 9-coordinate geometry to one N(1), one O(1), one O(14), one O(15), one O(2), one O(4), one O(5), one O(7), and one O(8) atom. The Gd(1)-N(1) bond length is 2.54 Å. The Gd(1)-O(1) bond length is 2.53 Å. The Gd(1)-O(14) bond length is 2.37 Å. The Gd(1)-O(15) bond length is 2.33 Å. The Gd(1)-O(2) bond length is 2.51 Å. The Gd(1)-O(4) bond length is 2.33 Å. The Gd(1)-O(5) bond length is 2.44 Å. The Gd(1)-O(7) bond length is 2.51 Å. The Gd(1)-O(8) bond length is 2.48 Å. In the second Gd site, Gd(2) is bonded in a 9-coordinate geometry to one O(1), one O(10), one O(11), one O(12), one O(13), one O(14), one O(3), one O(6), and one O(9) atom. The Gd(2)-O(1) bond length is 2.46 Å. The Gd(2)-O(10) bond length is 2.39 Å. The Gd(2)-O(11) bond length is 2.42 Å. The Gd(2)-O(12) bond length is 2.51 Å. The Gd(2)-O(13) bond length is 2.56 Å. The Gd(2)-O(14) bond length is 2.49 Å. The Gd(2)-O(3) bond length is 2.43 Å. The Gd(2)-O(6) bond length is 2.37 Å. The Gd(2)-O(9) bond length is 2.36 Å. There are five inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one N(1), one N(2), and one H(2) atom. The C(1)-N(1) bond length is 1.33 Å. The C(1)-N(2) bond length is 1.35 Å. The C(1)-H(2) bond length is 1.08 Å. In the second C site, C(2) is bonded in a distorted single-bond geometry to one C(3), one C(4), and one N(2) atom. The C(2)-C(3) bond length is 1.39 Å. The C(2)-C(4) bond length is 1.47 Å. The C(2)-N(2) bond length is 1.38 Å. In the third C site, C(3) is bonded in a distorted single-bond geometry to one C(2), one C(5), and one N(1) atom. The C(3)-C(5) bond length is 1.48 Å. The C(3)-N(1) bond length is 1.38 Å. In the fourth C site, C(4) is bonded in a bent 120 degrees geometry to one C(2), one O(13), and one O(14) atom. The C(4)-O(13) bond length is 1.26 Å. The C(4)-O(14) bond length is 1.29 Å. In the fifth C site, C(5) is bonded in a distorted bent 120 degrees geometry to one C(3), one O(1), and one O(15) atom. The C(5)-O(1) bond length is 1.29 Å. The C(5)-O(15) bond length is 1.26 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded in a distorted trigonal planar geometry to one Gd(1), one C(1), and one C(3) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one C(1), one C(2), and one H(1) atom. The N(2)-H(1) bond length is 1.02 Å. There are eight inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one N(2) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(1) atom. In the third H site, H(3) is bonded in a single-bond geometry to one O(10) atom. The H(3)-O(10) bond length is 0.99 Å. In the fourth H site, H(4) is bonded in a single-bond geometry to one O(10) atom. The H(4)-O(10) bond length is 0.98 Å. In the fifth H site, H(5) is bonded in a single-bond geometry to one O(11) atom. The H(5)-O(11) bond length is 0.98 Å. In the sixth H site, H(6) is bonded in a single-bond geometry to one O(11) and one O(7) atom. The H(6)-O(11) bond length is 0.99 Å. The H(6)-O(7) bond length is 1.70 Å. In the seventh H site, H(7) is bonded in a single-bond geometry to one O(12) atom. The H(7)-O(12) bond length is 0.99 Å. In the eighth H site, H(8) is bonded in a single-bond geometry to one O(12) atom. The H(8)-O(12) bond length is 0.97 Å. There are two inequivalent S sites. In the first S site, S(1) is bonded in a tetrahedral geometry to one O(2), one O(3), one O(4), and one O(5) atom. The S(1)-O(2) bond length is 1.48 Å. The S(1)-O(3) bond length is 1.50 Å. The S(1)-O(4) bond length is 1.48 Å. The S(1)-O(5) bond length is 1.50 Å. In the second S site, S(2) is bonded in a tetrahedral geometry to one O(6), one O(7), one O(8), and one O(9) atom. The S(2)-O(6) bond length is 1.48 Å. The S(2)-O(7) bond length is 1.49 Å. The S(2)-O(8) bond length is 1.52 Å. The S(2)-O(9) bond length is 1.47 Å. There are fifteen inequivalent O sites. In the first O site, O(14) is bonded in a 3-coordinate geometry to one Gd(1), one Gd(2), and one C(4) atom. In the second O site, O(15) is bonded in a bent 150 degrees geometry to one Gd(1) and one C(5) atom. In the third O site, O(1) is bonded in a distorted single-bond geometry to one Gd(1), one Gd(2), and one C(5) atom. In the fourth O site, O(2) is bonded in a distorted single-bond geometry to one Gd(1) and one S(1) atom. In the fifth O site, O(3) is bonded in a 1-coordinate geometry to one Gd(2) and one S(1) atom. In the sixth O site, O(4) is bonded in a bent 150 degrees geometry to one Gd(1) and one S(1) atom. In the seventh O site, O(5) is bonded in a distorted water-like geometry to one Gd(1) and one S(1) atom. In the eighth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Gd(2) and one S(2) atom. In the ninth O site, O(7) is bonded in a distorted single-bond geometry to one Gd(1), one H(6), and one S(2) atom. In the tenth O site, O(8) is bonded in a distorted single-bond geometry to one Gd(1) and one S(2) atom. In the eleventh O site, O(9) is bonded in a bent 150 degrees geometry to one Gd(2) and one S(2) atom. In the twelfth O site, O(10) is bonded in a distorted water-like geometry to one Gd(2), one H(3), and one H(4) atom. In the thirteenth O site, O(11) is bonded in a distorted water-like geometry to one Gd(2), one H(5), and one H(6) atom. In the fourteenth O site, O(12) is bonded in a water-like geometry to one Gd(2), one H(7), and one H(8) atom. In the fifteenth O site, O(13) is bonded in a distorted single-bond geometry to one Gd(2) and one C(4) atom. Linkers: 4 [O]C(=O)c1nc[nH]c1C([O])=O. Metal clusters: 8 [Gd]. The MOF has largest included sphere 2.92 A, density 3.04 g/cm3, surface area 1840.69 m2/g, accessible volume 0.09 cm3/g