MgH8(C2O)8(CH)4(C4PNH2O2)2 is Indium-derived structured and crystallizes in the hexagonal P6_3/m space group. The structure is zero-dimensional and consists of twenty-four 02329_fluka molecules, four C4PNH2O2 clusters, and six MgH8(C2O)8 clusters. In each C4PNH2O2 cluster, there are four inequivalent C sites. In the first C site, C(4) is bonded in a distorted single-bond geometry to one C(5) and one H(2) atom. The C(4)-C(5) bond length is 1.40 Å. The C(4)-H(2) bond length is 0.93 Å. In the second C site, C(5) is bonded in a distorted trigonal planar geometry to one C(4), one C(6), and one O(1) atom. The C(5)-C(6) bond length is 1.40 Å. The C(5)-O(1) bond length is 1.39 Å. In the third C site, C(6) is bonded in a distorted single-bond geometry to one C(5) and one H(3) atom. The C(6)-H(3) bond length is 0.93 Å. In the fourth C site, C(12) is bonded in a distorted single-bond geometry to one O(2) atom. The C(12)-O(2) bond length is 1.43 Å. P(1) is bonded to two equivalent N(1), one O(1), and one O(2) atom to form corner-sharing PN2O2 tetrahedra. Both P(1)-N(1) bond lengths are 1.58 Å. The P(1)-O(1) bond length is 1.59 Å. The P(1)-O(2) bond length is 1.58 Å. N(1) is bonded in a bent 120 degrees geometry to two equivalent P(1) atoms. There are two inequivalent H sites. In the first H site, H(2) is bonded in a single-bond geometry to one C(4) atom. In the second H site, H(3) is bonded in a single-bond geometry to one C(6) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one C(5) and one P(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one C(12) and one P(1) atom. In each MgH8(C2O)8 cluster, Mg(1) is bonded in a rectangular see-saw-like geometry to two equivalent O(4) and two equivalent O(6) atoms. Both Mg(1)-O(4) bond lengths are 2.08 Å. Both Mg(1)-O(6) bond lengths are 2.05 Å. There are eight inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(3), and one O(4) atom. The C(1)-C(2) bond length is 1.48 Å. The C(1)-O(3) bond length is 1.25 Å. The C(1)-O(4) bond length is 1.28 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(1), one C(3), and one C(7) atom. The C(2)-C(3) bond length is 1.41 Å. The C(2)-C(7) bond length is 1.41 Å. In the third C site, C(3) is bonded in a distorted single-bond geometry to one C(2) and one H(1) atom. The C(3)-H(1) bond length is 0.93 Å. In the fourth C site, C(7) is bonded in a distorted single-bond geometry to one C(2) and one H(4) atom. The C(7)-H(4) bond length is 0.93 Å. In the fifth C site, C(8) is bonded in a distorted bent 120 degrees geometry to one C(9), one O(5), and one O(6) atom. The C(8)-C(9) bond length is 1.53 Å. The C(8)-O(5) bond length is 1.25 Å. The C(8)-O(6) bond length is 1.22 Å. In the sixth C site, C(9) is bonded in a trigonal planar geometry to one C(10), one C(14), and one C(8) atom. The C(9)-C(10) bond length is 1.36 Å. The C(9)-C(14) bond length is 1.35 Å. In the seventh C site, C(10) is bonded in a distorted single-bond geometry to one C(9) and one H(5) atom. The C(10)-H(5) bond length is 0.93 Å. In the eighth C site, C(14) is bonded in a distorted single-bond geometry to one C(9) and one H(8) atom. The C(14)-H(8) bond length is 0.93 Å. There are four inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(3) atom. In the second H site, H(4) is bonded in a single-bond geometry to one C(7) atom. In the third H site, H(5) is bonded in a single-bond geometry to one C(10) atom. In the fourth H site, H(8) is bonded in a single-bond geometry to one C(14) atom. There are four inequivalent O sites. In the first O site, O(3) is bonded in a single-bond geometry to one C(1) atom. In the second O site, O(4) is bonded in a bent 120 degrees geometry to one Mg(1) and one C(1) atom. In the third O site, O(5) is bonded in a single-bond geometry to one C(8) atom. In the fourth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Mg(1) and one C(8) atom. Linkers: 4 [O]C(=O)c1ccc(O[P]2(Oc3ccc(C([O])=O)cc3)[N][P](Oc3ccc(C([O])=O)cc3)(Oc3ccc(C([O])=O)cc3)[N][P](Oc3ccc(C([O])=O)cc3)(Oc3ccc(C([O])=O)cc3)[N]2)cc1. Metal clusters: 6 O=[C]O[Mg]O[C]=O.[O][C]=O.[O][C]=O. RCSR code: stp. The MOF has largest included sphere 11.73 A, density 0.76 g/cm3, surface area 4848.77 m2/g, accessible volume 0.80 cm3/g