SrC7NH5O5 crystallizes in the triclinic P-1 space group. Sr(1) is bonded in a 8-coordinate geometry to one N(1), one O(2), one O(3), one O(4), two equivalent O(1), and two equivalent O(5) atoms. The Sr(1)-N(1) bond length is 2.73 Å. The Sr(1)-O(2) bond length is 2.48 Å. The Sr(1)-O(3) bond length is 2.61 Å. The Sr(1)-O(4) bond length is 3.17 Å. There is one shorter (2.57 Å) and one longer (2.58 Å) Sr(1)-O(1) bond length. There is one shorter (2.67 Å) and one longer (2.69 Å) Sr(1)-O(5) bond length. There are seven inequivalent C sites. In the first C site, C(1) is bonded in a distorted trigonal planar geometry to one C(2), one C(6), and one N(1) atom. The C(1)-C(2) bond length is 1.39 Å. The C(1)-C(6) bond length is 1.51 Å. The C(1)-N(1) bond length is 1.35 Å. In the second C site, C(2) is bonded in a distorted single-bond geometry to one C(1) and one H(1) atom. The C(2)-H(1) bond length is 1.08 Å. In the third C site, C(3) is bonded in a distorted single-bond geometry to one C(4) and one H(2) atom. The C(3)-C(4) bond length is 1.40 Å. The C(3)-H(2) bond length is 1.09 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one C(3), one C(5), and one C(7) atom. The C(4)-C(5) bond length is 1.40 Å. The C(4)-C(7) bond length is 1.51 Å. In the fifth C site, C(5) is bonded in a distorted trigonal planar geometry to one C(4), one N(1), and one H(3) atom. The C(5)-N(1) bond length is 1.34 Å. The C(5)-H(3) bond length is 1.09 Å. In the sixth C site, C(6) is bonded in a distorted bent 120 degrees geometry to one C(1), one O(1), and one O(2) atom. The C(6)-O(1) bond length is 1.27 Å. The C(6)-O(2) bond length is 1.26 Å. In the seventh C site, C(7) is bonded in a distorted bent 120 degrees geometry to one C(4), one O(3), and one O(4) atom. The C(7)-O(3) bond length is 1.26 Å. The C(7)-O(4) bond length is 1.28 Å. N(1) is bonded in a distorted bent 120 degrees geometry to one Sr(1), one C(1), and one C(5) atom. There are five inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(2) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(3) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(5) atom. In the fourth H site, H(4) is bonded in a distorted linear geometry to one O(4) and one O(5) atom. The H(4)-O(4) bond length is 1.62 Å. The H(4)-O(5) bond length is 1.02 Å. In the fifth H site, H(5) is bonded in a single-bond geometry to one O(5) atom. The H(5)-O(5) bond length is 0.99 Å. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Sr(1) and one C(6) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Sr(1) and one C(6) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Sr(1) and one C(7) atom. In the fourth O site, O(4) is bonded in a distorted water-like geometry to one Sr(1), one C(7), and one H(4) atom. In the fifth O site, O(5) is bonded in a water-like geometry to two equivalent Sr(1), one H(4), and one H(5) atom. Linkers: 2 [O]C(=O)c1ccc(C([O])=O)nc1. Metal clusters: 2 [Sr]. The MOF has largest included sphere 1.33 A, density 2.30 g/cm3, surface area 2664.49 m2/g, accessible volume 0.03 cm3/g