Ag5PH6(C8O5)2 crystallizes in the monoclinic C2/c space group. There are six inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a T-shaped geometry to one O(1), one O(7), and one O(8) atom. The Ag(1)-O(1) bond length is 2.38 Å. The Ag(1)-O(7) bond length is 2.30 Å. The Ag(1)-O(8) bond length is 2.27 Å. In the second Ag site, Ag(2) is bonded in a 4-coordinate geometry to two equivalent O(2) and two equivalent O(9) atoms. Both Ag(2)-O(2) bond lengths are 2.53 Å. Both Ag(2)-O(9) bond lengths are 2.35 Å. In the third Ag site, Ag(3) is bonded to one O(10), one O(2), one O(3), one O(5), and one O(8) atom to form distorted AgO5 trigonal bipyramids that share  a cornercorner with one P(1)C2O2 tetrahedra. The Ag(3)-O(10) bond length is 2.32 Å. The Ag(3)-O(2) bond length is 2.36 Å. The Ag(3)-O(3) bond length is 2.60 Å. The Ag(3)-O(5) bond length is 2.72 Å. The Ag(3)-O(8) bond length is 2.57 Å. In the fourth Ag site, Ag(4) is bonded in a 4-coordinate geometry to one O(2), one O(3), one O(4), and one O(9) atom. The Ag(4)-O(2) bond length is 2.61 Å. The Ag(4)-O(3) bond length is 2.22 Å. The Ag(4)-O(4) bond length is 2.18 Å. The Ag(4)-O(9) bond length is 2.58 Å. In the fifth Ag site, Ag(5) is bonded in a 3-coordinate geometry to one O(1), one O(5), and one O(6) atom. The Ag(5)-O(1) bond length is 2.29 Å. The Ag(5)-O(5) bond length is 2.37 Å. The Ag(5)-O(6) bond length is 2.46 Å. In the sixth Ag site, Ag(6) is bonded to two equivalent O(6) and two equivalent O(7) atoms to form distorted AgO4 trigonal pyramids that share corners with two equivalent P(1)C2O2 tetrahedra. Both Ag(6)-O(6) bond lengths are 2.34 Å. Both Ag(6)-O(7) bond lengths are 2.33 Å. There are sixteen inequivalent C sites. In the first C site, C(9) is bonded in a trigonal planar geometry to one C(10), one C(15), and one P(1) atom. The C(9)-C(10) bond length is 1.42 Å. The C(9)-C(15) bond length is 1.41 Å. The C(9)-P(1) bond length is 1.85 Å. In the second C site, C(10) is bonded in a trigonal planar geometry to one C(11), one C(12), and one C(9) atom. The C(10)-C(11) bond length is 1.50 Å. The C(10)-C(12) bond length is 1.40 Å. In the third C site, C(11) is bonded in a distorted bent 120 degrees geometry to one C(10), one O(7), and one O(8) atom. The C(11)-O(7) bond length is 1.28 Å. The C(11)-O(8) bond length is 1.27 Å. In the fourth C site, C(12) is bonded in a distorted trigonal planar geometry to one C(10), one C(13), and one H(4) atom. The C(12)-C(13) bond length is 1.39 Å. The C(12)-H(4) bond length is 1.09 Å. In the fifth C site, C(13) is bonded in a distorted trigonal planar geometry to one C(12), one C(14), and one H(5) atom. The C(13)-C(14) bond length is 1.39 Å. The C(13)-H(5) bond length is 1.09 Å. In the sixth C site, C(14) is bonded in a distorted single-bond geometry to one C(13), one C(15), and one H(6) atom. The C(14)-C(15) bond length is 1.40 Å. The C(14)-H(6) bond length is 1.09 Å. In the seventh C site, C(15) is bonded in a trigonal planar geometry to one C(14), one C(16), and one C(9) atom. The C(15)-C(16) bond length is 1.50 Å. In the eighth C site, C(16) is bonded in a distorted bent 120 degrees geometry to one C(15), one O(10), and one O(9) atom. The C(16)-O(10) bond length is 1.28 Å. The C(16)-O(9) bond length is 1.27 Å. In the ninth C site, C(1) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(1), and one O(2) atom. The C(1)-C(2) bond length is 1.50 Å. The C(1)-O(1) bond length is 1.27 Å. The C(1)-O(2) bond length is 1.28 Å. In the tenth C site, C(2) is bonded in a trigonal planar geometry to one C(1), one C(3), and one C(8) atom. The C(2)-C(3) bond length is 1.40 Å. The C(2)-C(8) bond length is 1.41 Å. In the eleventh 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 1.09 Å. In the twelfth 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 1.39 Å. The C(4)-H(2) bond length is 1.09 Å. In the thirteenth C site, C(5) is bonded in a distorted trigonal planar geometry to one C(4), one C(6), and one H(3) atom. The C(5)-C(6) bond length is 1.40 Å. The C(5)-H(3) bond length is 1.09 Å. In the fourteenth C site, C(6) is bonded in a trigonal planar geometry to one C(5), one C(7), and one C(8) atom. The C(6)-C(7) bond length is 1.51 Å. The C(6)-C(8) bond length is 1.41 Å. In the fifteenth C site, C(7) is bonded in a distorted bent 120 degrees geometry to one C(6), one O(3), and one O(4) atom. The C(7)-O(3) bond length is 1.28 Å. The C(7)-O(4) bond length is 1.27 Å. In the sixteenth C site, C(8) is bonded in a trigonal planar geometry to one C(2), one C(6), and one P(1) atom. The C(8)-P(1) bond length is 1.83 Å. P(1) is bonded to one C(8), one C(9), one O(5), and one O(6) atom to form PC2O2 tetrahedra that share  a cornercorner with one Ag(3)O5 trigonal bipyramid and  a cornercorner with one Ag(6)O4 trigonal pyramid. The P(1)-O(5) bond length is 1.52 Å. The P(1)-O(6) bond length is 1.53 Å. There are six 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(2) is bonded in a single-bond geometry to one C(4) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(5) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(12) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(13) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(14) atom. There are ten inequivalent O sites. In the first O site, O(9) is bonded in a distorted single-bond geometry to one Ag(2), one Ag(4), and one C(16) atom. In the second O site, O(10) is bonded in a distorted single-bond geometry to one Ag(3) and one C(16) atom. In the third O site, O(1) is bonded in a distorted trigonal planar geometry to one Ag(1), one Ag(5), and one C(1) atom. In the fourth O site, O(7) is bonded in a 3-coordinate geometry to one Ag(1), one Ag(6), and one C(11) atom. In the fifth O site, O(2) is bonded in a distorted single-bond geometry to one Ag(2), one Ag(3), one Ag(4), and one C(1) atom. In the sixth O site, O(3) is bonded in a 3-coordinate geometry to one Ag(3), one Ag(4), and one C(7) atom. In the seventh O site, O(4) is bonded in a bent 120 degrees geometry to one Ag(4) and one C(7) atom. In the eighth O site, O(5) is bonded in a distorted single-bond geometry to one Ag(3), one Ag(5), and one P(1) atom. In the ninth O site, O(6) is bonded in a 3-coordinate geometry to one Ag(5), one Ag(6), and one P(1) atom. In the tenth O site, O(8) is bonded in a 3-coordinate geometry to one Ag(1), one Ag(3), and one C(11) atom. Linkers: 4 [O]C(=O)c1cccc(C([O])=O)c1P([O])(=O)c1c(C([O])=O)cccc1C([O])=O. Metal clusters: 20 [Ag]. The MOF has largest included sphere 4.74 A, density 3.21 g/cm3, surface area 1577.22 m2/g, accessible volume 0.05 cm3/g