Mn2PH2(CO3)4 crystallizes in the orthorhombic Pna2_1 space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(10), one O(12), one O(5), one O(7), and one O(9) atom to form distorted MnO6 pentagonal pyramids that share  a cornercorner with one P(1)O4 tetrahedra and  an edgeedge with one Mn(2)O6 pentagonal pyramid. The Mn(1)-O(1) bond length is 2.05 Å. The Mn(1)-O(10) bond length is 2.22 Å. The Mn(1)-O(12) bond length is 2.23 Å. The Mn(1)-O(5) bond length is 2.20 Å. The Mn(1)-O(7) bond length is 2.21 Å. The Mn(1)-O(9) bond length is 2.22 Å. In the second Mn site, Mn(2) is bonded to one O(11), one O(12), one O(2), one O(6), one O(8), and one O(9) atom to form distorted MnO6 pentagonal pyramids that share  a cornercorner with one P(1)O4 tetrahedra and  an edgeedge with one Mn(1)O6 pentagonal pyramid. The Mn(2)-O(11) bond length is 2.20 Å. The Mn(2)-O(12) bond length is 2.21 Å. The Mn(2)-O(2) bond length is 2.02 Å. The Mn(2)-O(6) bond length is 2.24 Å. The Mn(2)-O(8) bond length is 2.16 Å. The Mn(2)-O(9) bond length is 2.24 Å. There are four inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one O(5) and one O(6) atom. The C(1)-O(5) bond length is 1.26 Å. The C(1)-O(6) bond length is 1.25 Å. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one O(7) and one O(8) atom. The C(2)-O(7) bond length is 1.23 Å. The C(2)-O(8) bond length is 1.25 Å. In the third C site, C(3) is bonded in a distorted bent 120 degrees geometry to one O(10) and one O(9) atom. The C(3)-O(10) bond length is 1.24 Å. The C(3)-O(9) bond length is 1.25 Å. In the fourth C site, C(4) is bonded in a distorted bent 120 degrees geometry to one O(11) and one O(12) atom. The C(4)-O(11) bond length is 1.27 Å. The C(4)-O(12) bond length is 1.24 Å. P(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form PO4 tetrahedra that share  a cornercorner with one Mn(1)O6 pentagonal pyramid and  a cornercorner with one Mn(2)O6 pentagonal pyramid. The P(1)-O(1) bond length is 1.48 Å. The P(1)-O(2) bond length is 1.48 Å. The P(1)-O(3) bond length is 1.57 Å. The P(1)-O(4) bond length is 1.57 Å. There are two inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(3) atom. The H(1)-O(3) bond length is 0.82 Å. In the second H site, H(2) is bonded in a single-bond geometry to one O(4) atom. The H(2)-O(4) bond length is 0.82 Å. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Mn(1) and one P(1) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Mn(2) and one P(1) atom. In the third O site, O(3) is bonded in a water-like geometry to one P(1) and one H(1) atom. In the fourth O site, O(4) is bonded in a water-like geometry to one P(1) and one H(2) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Mn(1) and one C(1) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Mn(2) and one C(1) atom. In the seventh O site, O(7) is bonded in a bent 120 degrees geometry to one Mn(1) and one C(2) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one Mn(2) and one C(2) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(2), and one C(3) atom. In the tenth O site, O(10) is bonded in a bent 120 degrees geometry to one Mn(1) and one C(3) atom. In the eleventh O site, O(11) is bonded in a bent 120 degrees geometry to one Mn(2) and one C(4) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(2), and one C(4) atom. Linkers: 8 [O]C(=O)C([O])=O. Metal clusters: 8 [Mn]. The MOF has largest included sphere 4.57 A, density 1.70 g/cm3, surface area 3046.17 m2/g, accessible volume 0.20 cm3/g