Sr2NiC20H8(NO4)3CH crystallizes in the triclinic P-1 space group. The structure consists of two 02329_fluka molecules inside a Sr2NiC20H8(NO4)3 framework. In the Sr2NiC20H8(NO4)3 framework, there are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 8-coordinate geometry to one O(1), one O(12), one O(2), one O(3), one O(4), one O(5), and two equivalent O(6) atoms. The Sr(1)-O(1) bond length is 2.66 Å. The Sr(1)-O(12) bond length is 2.63 Å. The Sr(1)-O(2) bond length is 2.57 Å. The Sr(1)-O(3) bond length is 2.68 Å. The Sr(1)-O(4) bond length is 2.56 Å. The Sr(1)-O(5) bond length is 2.62 Å. There is one shorter (2.60 Å) and one longer (2.63 Å) Sr(1)-O(6) bond length. In the second Sr site, Sr(2) is bonded in a 4-coordinate geometry to one O(2), one O(3), one O(4), and one O(5) atom. The Sr(2)-O(2) bond length is 2.52 Å. The Sr(2)-O(3) bond length is 2.68 Å. The Sr(2)-O(4) bond length is 2.58 Å. The Sr(2)-O(5) bond length is 2.50 Å. Ni(1) is bonded in an octahedral geometry to one N(1), one N(2), one N(3), one O(10), one O(11), and one O(9) atom. The Ni(1)-N(1) bond length is 2.03 Å. The Ni(1)-N(2) bond length is 2.05 Å. The Ni(1)-N(3) bond length is 2.16 Å. The Ni(1)-O(10) bond length is 2.07 Å. The Ni(1)-O(11) bond length is 2.04 Å. The Ni(1)-O(9) bond length is 2.05 Å. There are twenty inequivalent C sites. In the first C site, C(1) is bonded in a distorted trigonal planar geometry to one C(19), one N(2), and one H(9) atom. The C(1)-C(19) bond length is 1.37 Å. The C(1)-N(2) bond length is 1.33 Å. The C(1)-H(9) bond length is 0.93 Å. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one C(20), one O(1), and one O(2) atom. The C(2)-C(20) bond length is 1.50 Å. The C(2)-O(1) bond length is 1.21 Å. The C(2)-O(2) bond length is 1.27 Å. In the third C site, C(3) is bonded in a 3-coordinate geometry to one C(5), one N(1), and one H(5) atom. The C(3)-C(5) bond length is 1.39 Å. The C(3)-N(1) bond length is 1.30 Å. The C(3)-H(5) bond length is 0.93 Å. In the fourth C site, C(5) is bonded in a distorted single-bond geometry to one C(3) and one H(1) atom. The C(5)-H(1) bond length is 0.93 Å. In the fifth C site, C(6) is bonded in a distorted bent 120 degrees geometry to one C(21), one O(3), and one O(4) atom. The C(6)-C(21) bond length is 1.52 Å. The C(6)-O(3) bond length is 1.29 Å. The C(6)-O(4) bond length is 1.29 Å. In the sixth C site, C(7) is bonded in a distorted single-bond geometry to one C(21) and one N(3) atom. The C(7)-C(21) bond length is 1.46 Å. The C(7)-N(3) bond length is 1.36 Å. In the seventh C site, C(8) is bonded in a distorted bent 120 degrees geometry to one C(10), one O(7), and one O(9) atom. The C(8)-C(10) bond length is 1.50 Å. The C(8)-O(7) bond length is 1.22 Å. The C(8)-O(9) bond length is 1.27 Å. In the eighth C site, C(9) is bonded in a distorted bent 120 degrees geometry to one N(3) and one H(6) atom. The C(9)-N(3) bond length is 1.33 Å. The C(9)-H(6) bond length is 0.93 Å. In the ninth C site, C(10) is bonded in a distorted single-bond geometry to one C(20), one C(8), and one N(1) atom. The C(10)-C(20) bond length is 1.39 Å. The C(10)-N(1) bond length is 1.36 Å. In the tenth C site, C(11) is bonded in a distorted bent 120 degrees geometry to one C(15), one O(12), and one O(5) atom. The C(11)-C(15) bond length is 1.50 Å. The C(11)-O(12) bond length is 1.25 Å. The C(11)-O(5) bond length is 1.25 Å. In the eleventh C site, C(12) is bonded in a distorted single-bond geometry to one C(21) and one H(8) atom. The C(12)-C(21) bond length is 1.30 Å. The C(12)-H(8) bond length is 0.93 Å. In the twelfth C site, C(13) is bonded in a distorted bent 120 degrees geometry to one O(11) and one O(8) atom. The C(13)-O(11) bond length is 1.24 Å. The C(13)-O(8) bond length is 1.26 Å. In the thirteenth C site, C(14) is bonded in a distorted single-bond geometry to one C(20) and one H(4) atom. The C(14)-C(20) bond length is 1.39 Å. The C(14)-H(4) bond length is 0.93 Å. In the fourteenth C site, C(15) is bonded in a trigonal planar geometry to one C(11), one C(16), and one C(18) atom. The C(15)-C(16) bond length is 1.39 Å. The C(15)-C(18) bond length is 1.37 Å. In the fifteenth C site, C(16) is bonded in a distorted single-bond geometry to one C(15) and one N(2) atom. The C(16)-N(2) bond length is 1.35 Å. In the sixteenth C site, C(17) is bonded in a distorted bent 120 degrees geometry to one O(10) and one O(6) atom. The C(17)-O(10) bond length is 1.21 Å. The C(17)-O(6) bond length is 1.26 Å. In the seventeenth C site, C(18) is bonded in a distorted single-bond geometry to one C(15) and one H(2) atom. The C(18)-H(2) bond length is 0.93 Å. In the eighteenth C site, C(19) is bonded in a distorted single-bond geometry to one C(1) and one H(7) atom. The C(19)-H(7) bond length is 0.93 Å. In the nineteenth C site, C(20) is bonded in a trigonal planar geometry to one C(10), one C(14), and one C(2) atom. In the twentieth C site, C(21) is bonded in a trigonal planar geometry to one C(12), one C(6), and one C(7) atom. There are three inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one Ni(1), one C(10), and one C(3) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one Ni(1), one C(1), and one C(16) atom. In the third N site, N(3) is bonded in a distorted trigonal planar geometry to one Ni(1), one C(7), and one C(9) atom. There are eight inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(5) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(18) atom. In the third H site, H(4) is bonded in a single-bond geometry to one C(14) atom. In the fourth H site, H(5) is bonded in a single-bond geometry to one C(3) atom. In the fifth H site, H(6) is bonded in a single-bond geometry to one C(9) atom. In the sixth H site, H(7) is bonded in a single-bond geometry to one C(19) atom. In the seventh H site, H(8) is bonded in a single-bond geometry to one C(12) atom. In the eighth H site, H(9) is bonded in a single-bond geometry to one C(1) atom. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to one Sr(1) and one C(2) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Sr(1), one Sr(2), and one C(2) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Sr(1), one Sr(2), and one C(6) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Sr(1), one Sr(2), and one C(6) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Sr(1), one Sr(2), and one C(11) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to two equivalent Sr(1) and one C(17) atom. In the seventh O site, O(7) is bonded in a single-bond geometry to one C(8) atom. In the eighth O site, O(8) is bonded in a single-bond geometry to one C(13) atom. In the ninth O site, O(9) is bonded in a bent 120 degrees geometry to one Ni(1) and one C(8) atom. In the tenth O site, O(10) is bonded in a bent 120 degrees geometry to one Ni(1) and one C(17) atom. In the eleventh O site, O(11) is bonded in a bent 120 degrees geometry to one Ni(1) and one C(13) atom. In the twelfth O site, O(12) is bonded in a distorted single-bond geometry to one Sr(1) and one C(11) atom. Linkers: 6 [O]C(=O)c1cccnc1C([O])=O. Metal clusters: 4 [Sr] ,2 [Ni]. The MOF has largest included sphere 4.43 A, density 1.74 g/cm3, surface area 3206.50 m2/g, accessible volume 0.19 cm3/g