NdC3PH7O10 crystallizes in the monoclinic P2_1/c space group. Nd(1) is bonded in a 9-coordinate geometry to one O(10), one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom. The Nd(1)-O(10) bond length is 2.54 Å. The Nd(1)-O(2) bond length is 2.46 Å. The Nd(1)-O(3) bond length is 2.35 Å. The Nd(1)-O(4) bond length is 2.53 Å. The Nd(1)-O(5) bond length is 2.65 Å. The Nd(1)-O(6) bond length is 2.50 Å. The Nd(1)-O(7) bond length is 2.49 Å. The Nd(1)-O(8) bond length is 2.54 Å. The Nd(1)-O(9) bond length is 2.58 Å. There are three inequivalent C sites. In the first C site, C(1) is bonded in a distorted tetrahedral geometry to one C(2), one P(1), one H(7), and one O(4) atom. The C(1)-C(2) bond length is 1.52 Å. The C(1)-P(1) bond length is 1.85 Å. The C(1)-H(7) bond length is 1.10 Å. The C(1)-O(4) bond length is 1.42 Å. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one C(1), one O(5), and one O(6) atom. The C(2)-O(5) bond length is 1.27 Å. The C(2)-O(6) bond length is 1.28 Å. In the third C site, C(3) is bonded in a distorted bent 120 degrees geometry to one O(7) and one O(8) atom. The C(3)-O(7) bond length is 1.26 Å. The C(3)-O(8) bond length is 1.27 Å. P(1) is bonded in a distorted 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 1.60 Å. The P(1)-O(2) bond length is 1.51 Å. The P(1)-O(3) bond length is 1.51 Å. There are seven inequivalent H sites. In the first H site, H(1) is bonded in a distorted linear geometry to one O(1) and one O(8) atom. The H(1)-O(1) bond length is 1.01 Å. The H(1)-O(8) bond length is 1.63 Å. In the second H site, H(2) is bonded in a distorted linear geometry to one O(4) and one O(6) atom. The H(2)-O(4) bond length is 1.01 Å. The H(2)-O(6) bond length is 1.64 Å. In the third H site, H(3) is bonded in a single-bond geometry to one O(9) atom. The H(3)-O(9) bond length is 0.98 Å. In the fourth H site, H(4) is bonded in a distorted single-bond geometry to one O(5) and one O(9) atom. The H(4)-O(5) bond length is 1.67 Å. The H(4)-O(9) bond length is 1.01 Å. In the fifth H site, H(5) is bonded in a single-bond geometry to one O(10) atom. The H(5)-O(10) bond length is 0.98 Å. In the sixth H site, H(6) is bonded in a single-bond geometry to one O(10) atom. The H(6)-O(10) bond length is 0.99 Å. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(1) atom. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one P(1) and one H(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Nd(1) and one P(1) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Nd(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted water-like geometry to one Nd(1), one C(1), and one H(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Nd(1), one C(2), and one H(4) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Nd(1), one C(2), and one H(2) atom. In the seventh O site, O(7) is bonded in a distorted bent 120 degrees geometry to one Nd(1) and one C(3) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Nd(1), one C(3), and one H(1) atom. In the ninth O site, O(9) is bonded in a water-like geometry to one Nd(1), one H(3), and one H(4) atom. In the tenth O site, O(10) is bonded in a distorted water-like geometry to one Nd(1), one H(5), and one H(6) atom. Linkers: 2 [O]C(=O)C([O])=O. Metal clusters: 4 [Nd]. The MOF has largest included sphere 2.65 A, density 2.71 g/cm3, surface area 2198.98 m2/g, accessible volume 0.05 cm3/g