CeC6PNSO7 crystallizes in the triclinic P-1 space group. Ce(1) is bonded in a 7-coordinate geometry to one O(3), one O(6), one O(7), two equivalent O(1), and two equivalent O(2) atoms. The Ce(1)-O(3) bond length is 2.29 Å. The Ce(1)-O(6) bond length is 2.47 Å. The Ce(1)-O(7) bond length is 2.70 Å. There is one shorter (2.45 Å) and one longer (2.61 Å) Ce(1)-O(1) bond length. There is one shorter (2.62 Å) and one longer (2.94 Å) Ce(1)-O(2) bond length. There are six inequivalent C sites. In the first C site, C(1) is bonded in a bent 120 degrees geometry to one P(1) and one N(1) atom. The C(1)-P(1) bond length is 1.78 Å. The C(1)-N(1) bond length is 1.49 Å. In the second C site, C(2) is bonded in a distorted single-bond geometry to one C(3) and one N(1) atom. The C(2)-C(3) bond length is 1.53 Å. The C(2)-N(1) bond length is 1.49 Å. In the third C site, C(3) is bonded in a water-like geometry to one C(2) and one C(4) atom. The C(3)-C(4) bond length is 1.52 Å. In the fourth C site, C(4) is bonded in a distorted trigonal non-coplanar geometry to one C(3), one C(4), and one C(5) atom. The C(4)-C(4) bond length is 1.55 Å. The C(4)-C(5) bond length is 1.53 Å. In the fifth C site, C(5) is bonded in a water-like geometry to one C(4) and one C(6) atom. The C(5)-C(6) bond length is 1.52 Å. In the sixth C site, C(6) is bonded in a distorted single-bond geometry to one C(5) and one N(1) atom. The C(6)-N(1) bond length is 1.50 Å. P(1) is bonded in a tetrahedral geometry to one C(1), one O(1), one O(2), and one O(3) atom. The P(1)-O(1) bond length is 1.54 Å. The P(1)-O(2) bond length is 1.52 Å. The P(1)-O(3) bond length is 1.52 Å. N(1) is bonded in a trigonal non-coplanar geometry to one C(1), one C(2), and one C(6) atom. S(1) is bonded in a tetrahedral geometry to one O(4), one O(5), one O(6), and one O(7) atom. The S(1)-O(4) bond length is 1.43 Å. The S(1)-O(5) bond length is 1.44 Å. The S(1)-O(6) bond length is 1.48 Å. The S(1)-O(7) bond length is 1.45 Å. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent Ce(1) and one P(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to two equivalent Ce(1) and one P(1) atom. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Ce(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a single-bond geometry to one S(1) atom. In the fifth O site, O(5) is bonded in a single-bond geometry to one S(1) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Ce(1) and one S(1) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one Ce(1) and one S(1) atom. Linkers: 1 [O]P([O])(=O)[C]N1[C][C][C]([C]2[C][C]N([C]P([O])([O])=O)[C][C]2)[C][C]1. Metal clusters: 2 [Ce]. The MOF has largest included sphere 4.13 A, density 1.88 g/cm3, surface area 3085.31 m2/g, accessible volume 0.19 cm3/g