Pb3(O3PCH2CH2CO2)2 crystallizes in the monoclinic P2_1/c space group. The structure consists of eight 02329_fluka molecules inside a Pb3P2H4(C2O5)2 framework. In the Pb3P2H4(C2O5)2 framework, there are three inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 3-coordinate geometry to one O(2), one O(6), and one O(8) atom. The Pb(1)-O(2) bond length is 2.33 Å. The Pb(1)-O(6) bond length is 2.37 Å. The Pb(1)-O(8) bond length is 2.53 Å. In the second Pb site, Pb(2) is bonded in a 6-coordinate geometry to one O(1), one O(3), one O(7), one O(9), and two equivalent O(5) atoms. The Pb(2)-O(1) bond length is 2.78 Å. The Pb(2)-O(3) bond length is 2.47 Å. The Pb(2)-O(7) bond length is 2.59 Å. The Pb(2)-O(9) bond length is 2.39 Å. There is one shorter (2.60 Å) and one longer (2.70 Å) Pb(2)-O(5) bond length. In the third Pb site, Pb(3) is bonded in a 7-coordinate geometry to one O(1), one O(10), one O(2), one O(3), one O(4), one O(6), and one O(8) atom. The Pb(3)-O(1) bond length is 2.43 Å. The Pb(3)-O(10) bond length is 2.85 Å. The Pb(3)-O(2) bond length is 2.84 Å. The Pb(3)-O(3) bond length is 2.53 Å. The Pb(3)-O(4) bond length is 2.47 Å. The Pb(3)-O(6) bond length is 2.74 Å. The Pb(3)-O(8) bond length is 2.83 Å. There are four inequivalent C sites. In the first C site, C(1) is bonded in a distorted water-like geometry to one P(1), one H(1), and one H(2) atom. The C(1)-P(1) bond length is 1.81 Å. The C(1)-H(1) bond length is 1.10 Å. The C(1)-H(2) bond length is 1.10 Å. In the second 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 1.27 Å. The C(3)-O(8) bond length is 1.28 Å. In the third C site, C(4) is bonded in a distorted water-like geometry to one P(2), one H(5), and one H(6) atom. The C(4)-P(2) bond length is 1.81 Å. The C(4)-H(5) bond length is 1.10 Å. The C(4)-H(6) bond length is 1.10 Å. In the fourth C site, C(6) is bonded in a distorted bent 120 degrees geometry to one O(10) and one O(9) atom. The C(6)-O(10) bond length is 1.27 Å. The C(6)-O(9) bond length is 1.28 Å. There are two inequivalent P sites. In the first P site, 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 1.55 Å. The P(1)-O(3) bond length is 1.55 Å. In the second P site, P(2) is bonded in a tetrahedral geometry to one C(4), one O(4), one O(5), and one O(6) atom. The P(2)-O(4) bond length is 1.55 Å. The P(2)-O(5) bond length is 1.55 Å. The P(2)-O(6) bond length is 1.56 Å. There are four inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(1) atom. In the third H site, H(5) is bonded in a single-bond geometry to one C(4) atom. In the fourth H site, H(6) is bonded in a single-bond geometry to one C(4) atom. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Pb(2), one Pb(3), and one P(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Pb(1), one Pb(3), and one P(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Pb(2), one Pb(3), and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Pb(3) and one P(2) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to two equivalent Pb(2) and one P(2) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one Pb(1), one Pb(3), and one P(2) atom. In the seventh O site, O(7) is bonded in a single-bond geometry to one Pb(2) and one C(3) atom. In the eighth O site, O(8) is bonded in a single-bond geometry to one Pb(1), one Pb(3), and one C(3) atom. In the ninth O site, O(9) is bonded in a distorted single-bond geometry to one Pb(2) and one C(6) atom. In the tenth O site, O(10) is bonded in a single-bond geometry to one Pb(3) and one C(6) atom. Linkers: 8 [O]C(=O)CCP([O])([O])=O. Metal clusters: 12 [Pb]. The MOF has largest included sphere 1.51 A, density 4.62 g/cm3, surface area 1203.73 m2/g, accessible volume 0.02 cm3/g