Sn2C7NH3O5 crystallizes in the triclinic P-1 space group. There are four inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 5-coordinate geometry to one N(1), one O(3), one O(9), and two equivalent O(1) atoms. The Sn(1)-N(1) bond length is 2.41 Å. The Sn(1)-O(3) bond length is 2.78 Å. The Sn(1)-O(9) bond length is 2.09 Å. There is one shorter (2.34 Å) and one longer (2.73 Å) Sn(1)-O(1) bond length. In the second Sn site, Sn(2) is bonded in a 5-coordinate geometry to one N(2), one O(10), one O(4), and two equivalent O(2) atoms. The Sn(2)-N(2) bond length is 2.41 Å. The Sn(2)-O(10) bond length is 2.09 Å. The Sn(2)-O(4) bond length is 2.78 Å. There is one shorter (2.34 Å) and one longer (2.74 Å) Sn(2)-O(2) bond length. In the third Sn site, Sn(3) is bonded in a distorted T-shaped geometry to one O(7) and two equivalent O(10) atoms. The Sn(3)-O(7) bond length is 2.23 Å. There is one shorter (2.13 Å) and one longer (2.16 Å) Sn(3)-O(10) bond length. In the fourth Sn site, Sn(4) is bonded in a distorted T-shaped geometry to one O(8) and two equivalent O(9) atoms. The Sn(4)-O(8) bond length is 2.23 Å. There is one shorter (2.13 Å) and one longer (2.15 Å) Sn(4)-O(9) bond length. There are twelve inequivalent C sites. In the first C site, C(1) is bonded in a distorted trigonal planar geometry to one C(11,12); one C(3,4); and one N(1) atom. The C(1)-C(11,12) bond length is 1.51 Å. The C(1)-C(3,4) bond length is 1.39 Å. The C(1)-N(1) bond length is 1.35 Å. In the second C site, C(2) is bonded in a distorted trigonal planar geometry to one C(11,12); one C(3,4); and one N(2) atom. The C(2)-C(11,12) bond length is 1.51 Å. The C(2)-C(3,4) bond length is 1.39 Å. The C(2)-N(2) bond length is 1.35 Å. In the third C site, C(3,4) is bonded in a distorted single-bond geometry to one C(1) and one H(1) atom. The C(3,4)-H(1) bond length is 1.08 Å. In the fourth C site, C(5) is bonded in a distorted single-bond geometry to one C(7) and one H(3,4) atom. The C(5)-C(7) bond length is 1.40 Å. The C(5)-H(3,4) bond length is 1.09 Å. In the fifth C site, C(6) is bonded in a distorted single-bond geometry to one C(8) and one H(3,4) atom. The C(6)-C(8) bond length is 1.40 Å. The C(6)-H(3,4) bond length is 1.09 Å. In the sixth C site, C(7) is bonded in a trigonal planar geometry to one C(13), one C(5), and one C(9) atom. The C(7)-C(13) bond length is 1.50 Å. The C(7)-C(9) bond length is 1.40 Å. In the seventh C site, C(8) is bonded in a trigonal planar geometry to one C(10), one C(14), and one C(6) atom. The C(8)-C(10) bond length is 1.40 Å. The C(8)-C(14) bond length is 1.50 Å. In the eighth C site, C(9) is bonded in a distorted trigonal planar geometry to one C(7); one N(1); and one H(5,6) atom. The C(9)-N(1) bond length is 1.33 Å. The C(9)-H(5,6) bond length is 1.09 Å. In the ninth C site, C(10) is bonded in a distorted bent 120 degrees geometry to one C(8); one N(2); and one H(5,6) atom. The C(10)-N(2) bond length is 1.33 Å. The C(10)-H(5,6) bond length is 1.09 Å. In the tenth C site, C(11,12) is bonded in a distorted bent 120 degrees geometry to one C(1), one O(1), and one O(3) atom. The C(11,12)-O(1) bond length is 1.30 Å. The C(11,12)-O(3) bond length is 1.25 Å. In the eleventh C site, C(13) is bonded in a distorted bent 120 degrees geometry to one C(7), one O(5), and one O(7) atom. The C(13)-O(5) bond length is 1.25 Å. The C(13)-O(7) bond length is 1.30 Å. In the twelfth C site, C(14) is bonded in a distorted bent 120 degrees geometry to one C(8), one O(6), and one O(8) atom. The C(14)-O(6) bond length is 1.25 Å. The C(14)-O(8) bond length is 1.30 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded in a distorted trigonal planar geometry to one Sn(1), one C(1), and one C(9) atom. In the second N site, N(2) is bonded in a distorted trigonal planar geometry to one Sn(2), one C(10), and one C(2) atom. There are four inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(3,4) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(3,4) atom. The H(2)-C(3,4) bond length is 1.08 Å. In the third H site, H(3,4) is bonded in a single-bond geometry to one C(5) atom. In the fourth H site, H(5,6) is bonded in a single-bond geometry to one C(9) atom. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent Sn(1) and one C(11,12) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to two equivalent Sn(2) and one C(11,12) atom. The O(2)-C(11,12) bond length is 1.29 Å. In the third O site, O(3) is bonded in a single-bond geometry to one Sn(1) and one C(11,12) atom. In the fourth O site, O(4) is bonded in a single-bond geometry to one Sn(2) and one C(11,12) atom. The O(4)-C(11,12) bond length is 1.25 Å. In the fifth O site, O(5) is bonded in a single-bond geometry to one C(13) atom. In the sixth O site, O(6) is bonded in a single-bond geometry to one C(14) atom. In the seventh O site, O(7) is bonded in a distorted bent 120 degrees geometry to one Sn(3) and one C(13) atom. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one Sn(4) and one C(14) atom. In the ninth O site, O(9) is bonded in a trigonal planar geometry to one Sn(1) and two equivalent Sn(4) atoms. In the tenth O site, O(10) is bonded in a trigonal planar geometry to one Sn(2) and two equivalent Sn(3) atoms. Linkers: 4 [O]C(=O)c1ccc(C([O])=O)nc1. Metal clusters: 8 [Sn]. The MOF has largest included sphere 1.83 A, density 3.03 g/cm3, surface area 1797.19 m2/g, accessible volume 0.06 cm3/g