Dy2C15H2(NO4)3(C3H2)2 crystallizes in the monoclinic C2/c space group. The structure consists of eight 2,3-dimethyl-1,3-butadiene molecules inside a Dy2C15H2(NO4)3 framework. In the Dy2C15H2(NO4)3 framework, there are three inequivalent Dy sites. In the first Dy site, Dy(1) is bonded in a 7-coordinate geometry to one N(2), one O(10), one O(12), one O(2), one O(5), one O(7), and one O(8) atom. The Dy(1)-N(2) bond length is 2.50 Å. The Dy(1)-O(10) bond length is 2.29 Å. The Dy(1)-O(12) bond length is 2.35 Å. The Dy(1)-O(2) bond length is 2.35 Å. The Dy(1)-O(5) bond length is 2.41 Å. The Dy(1)-O(7) bond length is 2.53 Å. The Dy(1)-O(8) bond length is 2.50 Å. In the second Dy site, Dy(2) is bonded in a 9-coordinate geometry to one N(4), two equivalent N(1), two equivalent O(1), two equivalent O(11), and two equivalent O(3) atoms. The Dy(2)-N(4) bond length is 2.48 Å. Both Dy(2)-N(1) bond lengths are 2.46 Å. Both Dy(2)-O(1) bond lengths are 2.41 Å. Both Dy(2)-O(11) bond lengths are 2.41 Å. Both Dy(2)-O(3) bond lengths are 2.39 Å. In the third Dy site, Dy(3) is bonded in a 5-coordinate geometry to one N(3), two equivalent O(4), and two equivalent O(9) atoms. The Dy(3)-N(3) bond length is 2.54 Å. Both Dy(3)-O(4) bond lengths are 2.37 Å. Both Dy(3)-O(9) bond lengths are 2.45 Å. There are sixteen inequivalent C sites. In the first C site, C(21) is bonded in a trigonal planar geometry to one C(22) and two equivalent C(18) atoms. The C(21)-C(22) bond length is 1.45 Å. Both C(21)-C(18) bond lengths are 1.38 Å. In the second C site, C(22) is bonded in a trigonal planar geometry to one C(21) and two equivalent C(20) atoms. Both C(22)-C(20) bond lengths are 1.38 Å. In the third C site, C(1) is bonded in a distorted bent 120 degrees geometry to one C(17), one O(10), and one O(9) atom. The C(1)-C(17) bond length is 1.49 Å. The C(1)-O(10) bond length is 1.27 Å. The C(1)-O(9) bond length is 1.24 Å. In the fourth C site, C(2) is bonded in a distorted bent 120 degrees geometry to one O(11) and one O(12) atom. The C(2)-O(11) bond length is 1.25 Å. The C(2)-O(12) bond length is 1.22 Å. In the fifth C site, C(3) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(2) atom. The C(3)-O(1) bond length is 1.26 Å. The C(3)-O(2) bond length is 1.25 Å. In the sixth C site, C(4) is bonded in a distorted single-bond geometry to one N(1) atom. The C(4)-N(1) bond length is 1.33 Å. In the seventh C site, C(8) is bonded in a distorted single-bond geometry to one N(1) atom. The C(8)-N(1) bond length is 1.32 Å. In the eighth C site, C(9) is bonded in a distorted bent 120 degrees geometry to one O(3) and one O(4) atom. The C(9)-O(3) bond length is 1.26 Å. The C(9)-O(4) bond length is 1.24 Å. In the ninth C site, C(10) is bonded in a distorted bent 120 degrees geometry to one O(5) and one O(6) atom. The C(10)-O(5) bond length is 1.27 Å. The C(10)-O(6) bond length is 1.25 Å. In the tenth C site, C(11) is bonded in a distorted single-bond geometry to one N(2) atom. The C(11)-N(2) bond length is 1.33 Å. In the eleventh C site, C(15) is bonded in a distorted single-bond geometry to one N(2) atom. The C(15)-N(2) bond length is 1.29 Å. In the twelfth C site, C(16) is bonded in a 2-coordinate geometry to one O(7) and one O(8) atom. The C(16)-O(7) bond length is 1.32 Å. The C(16)-O(8) bond length is 1.35 Å. In the thirteenth C site, C(17) is bonded in a distorted single-bond geometry to one C(1), one C(18), and one N(3) atom. The C(17)-C(18) bond length is 1.39 Å. The C(17)-N(3) bond length is 1.33 Å. In the fourteenth C site, C(18) is bonded in a distorted single-bond geometry to one C(17), one C(21), and one H(5) atom. The C(18)-H(5) bond length is 0.95 Å. In the fifteenth C site, C(19) is bonded in a distorted single-bond geometry to one N(4) atom. The C(19)-N(4) bond length is 1.33 Å. In the sixteenth C site, C(20) is bonded in a single-bond geometry to one C(22) and one H(6) atom. The C(20)-H(6) bond length is 0.95 Å. There are four inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one Dy(2), one C(4), and one C(8) atom. In the second N site, N(2) is bonded in a distorted bent 120 degrees geometry to one Dy(1), one C(11), and one C(15) atom. In the third N site, N(3) is bonded in a distorted trigonal planar geometry to one Dy(3) and two equivalent C(17) atoms. In the fourth N site, N(4) is bonded in a trigonal planar geometry to one Dy(2) and two equivalent C(19) atoms. There are two inequivalent H sites. In the first H site, H(5) is bonded in a single-bond geometry to one C(18) atom. In the second H site, H(6) is bonded in a single-bond geometry to one C(20) atom. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Dy(2) and one C(3) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Dy(1) and one C(3) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Dy(2) and one C(9) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one Dy(3) and one C(9) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Dy(1) and one C(10) atom. In the sixth O site, O(6) is bonded in a single-bond geometry to one C(10) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one Dy(1) and one C(16) atom. In the eighth O site, O(8) is bonded in a distorted single-bond geometry to one Dy(1) and one C(16) atom. In the ninth O site, O(9) is bonded in a distorted bent 120 degrees geometry to one Dy(3) and one C(1) atom. In the tenth O site, O(10) is bonded in a distorted bent 150 degrees geometry to one Dy(1) and one C(1) atom. In the eleventh O site, O(11) is bonded in a bent 120 degrees geometry to one Dy(2) and one C(2) atom. In the twelfth O site, O(12) is bonded in a bent 150 degrees geometry to one Dy(1) and one C(2) atom. Linkers: 6 [O]C(=O)c1cc(-c2cc(C([O])=O)nc(C([O])=O)c2)cc(C([O])=O)n1. Metal clusters: 8 [Dy]. The MOF has largest included sphere 5.01 A, density 1.92 g/cm3, surface area 2599.31 m2/g, accessible volume 0.22 cm3/g