AlP3H20(C6O5)2 crystallizes in the trigonal R-3 space group. Al(1) is bonded to one O(1), one O(10), one O(3), one O(4), one O(7), and one O(9) atom to form AlO6 octahedra that share  a cornercorner with one P(2)CO3 tetrahedra, corners with two equivalent P(1)CO3 tetrahedra, and corners with two equivalent P(3)CO3 tetrahedra. The Al(1)-O(1) bond length is 2.01 Å. The Al(1)-O(10) bond length is 1.84 Å. The Al(1)-O(3) bond length is 1.87 Å. The Al(1)-O(4) bond length is 1.95 Å. The Al(1)-O(7) bond length is 1.88 Å. The Al(1)-O(9) bond length is 1.87 Å. There are twelve inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one C(2), one C(6), and one C(7) atom. The C(1)-C(2) bond length is 1.41 Å. The C(1)-C(6) bond length is 1.41 Å. The C(1)-C(7) bond length is 1.51 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(8) atom. The C(2)-C(3) bond length is 1.42 Å. The C(2)-C(8) bond length is 1.51 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one C(2), one C(4), and one C(9) atom. The C(3)-C(4) bond length is 1.41 Å. The C(3)-C(9) bond length is 1.51 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one C(10), one C(3), and one C(5) atom. The C(4)-C(10) bond length is 1.51 Å. The C(4)-C(5) bond length is 1.41 Å. In the fifth C site, C(5) is bonded in a trigonal planar geometry to one C(11), one C(4), and one C(6) atom. The C(5)-C(11) bond length is 1.51 Å. The C(5)-C(6) bond length is 1.41 Å. In the sixth C site, C(6) is bonded in a trigonal planar geometry to one C(1), one C(12), and one C(5) atom. The C(6)-C(12) bond length is 1.50 Å. In the seventh C site, C(7) is bonded in a distorted water-like geometry to one C(1), one P(1), one H(6), and one H(7) atom. The C(7)-P(1) bond length is 1.83 Å. The C(7)-H(6) bond length is 1.10 Å. The C(7)-H(7) bond length is 1.10 Å. In the eighth C site, C(8) is bonded in a distorted trigonal non-coplanar geometry to one C(2), one H(10), one H(8), and one H(9) atom. The C(8)-H(10) bond length is 1.10 Å. The C(8)-H(8) bond length is 1.09 Å. The C(8)-H(9) bond length is 1.10 Å. In the ninth C site, C(9) is bonded in a distorted water-like geometry to one C(3), one P(2), one H(11), and one H(12) atom. The C(9)-P(2) bond length is 1.82 Å. The C(9)-H(11) bond length is 1.10 Å. The C(9)-H(12) bond length is 1.10 Å. In the tenth C site, C(10) is bonded in a distorted trigonal non-coplanar geometry to one C(4), one H(13), one H(14), and one H(15) atom. The C(10)-H(13) bond length is 1.09 Å. The C(10)-H(14) bond length is 1.10 Å. The C(10)-H(15) bond length is 1.10 Å. In the eleventh C site, C(11) is bonded in a distorted water-like geometry to one C(5), one P(3), one H(16), and one H(17) atom. The C(11)-P(3) bond length is 1.83 Å. The C(11)-H(16) bond length is 1.10 Å. The C(11)-H(17) bond length is 1.10 Å. In the twelfth C site, C(12) is bonded in a distorted trigonal non-coplanar geometry to one C(6), one H(18), one H(19), and one H(20) atom. The C(12)-H(18) bond length is 1.09 Å. The C(12)-H(19) bond length is 1.09 Å. The C(12)-H(20) bond length is 1.10 Å. There are three inequivalent P sites. In the first P site, P(1) is bonded to one C(7), one O(2), one O(3), and one O(4) atom to form distorted PCO3 tetrahedra that share corners with two equivalent Al(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 11-44°. The P(1)-O(2) bond length is 1.58 Å. The P(1)-O(3) bond length is 1.51 Å. The P(1)-O(4) bond length is 1.54 Å. In the second P site, P(2) is bonded to one C(9), one O(5), one O(6), and one O(7) atom to form PCO3 tetrahedra that share  a cornercorner with one Al(1)O6 octahedra. The corner-sharing octahedral tilt angles are 30°. The P(2)-O(5) bond length is 1.53 Å. The P(2)-O(6) bond length is 1.59 Å. The P(2)-O(7) bond length is 1.51 Å. In the third P site, P(3) is bonded to one C(11), one O(10), one O(8), and one O(9) atom to form PCO3 tetrahedra that share corners with two equivalent Al(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 27-37°. The P(3)-O(10) bond length is 1.52 Å. The P(3)-O(8) bond length is 1.58 Å. The P(3)-O(9) bond length is 1.52 Å. There are twenty inequivalent H sites. In the first H site, H(11) is bonded in a single-bond geometry to one C(9) atom. In the second H site, H(12) is bonded in a single-bond geometry to one C(9) atom. In the third H site, H(13) is bonded in a single-bond geometry to one C(10) atom. In the fourth H site, H(14) is bonded in a single-bond geometry to one C(10) atom. In the fifth H site, H(15) is bonded in a single-bond geometry to one C(10) atom. In the sixth H site, H(16) is bonded in a single-bond geometry to one C(11) atom. In the seventh H site, H(17) is bonded in a single-bond geometry to one C(11) atom. In the eighth H site, H(18) is bonded in a single-bond geometry to one C(12) atom. In the ninth H site, H(19) is bonded in a single-bond geometry to one C(12) atom. In the tenth H site, H(20) is bonded in a single-bond geometry to one C(12) atom. In the eleventh H site, H(1) is bonded in a single-bond geometry to one O(1) atom. The H(1)-O(1) bond length is 0.97 Å. In the twelfth H site, H(2) is bonded in a distorted single-bond geometry to one O(1) and one O(4) atom. The H(2)-O(1) bond length is 1.00 Å. The H(2)-O(4) bond length is 1.69 Å. In the thirteenth H site, H(3) is bonded in a linear geometry to one O(2) and one O(5) atom. The H(3)-O(2) bond length is 1.02 Å. The H(3)-O(5) bond length is 1.54 Å. In the fourteenth H site, H(4) is bonded in a linear geometry to one O(5) and one O(6) atom. The H(4)-O(5) bond length is 1.41 Å. The H(4)-O(6) bond length is 1.06 Å. In the fifteenth H site, H(5) is bonded in a linear geometry to one O(6) and one O(8) atom. The H(5)-O(6) bond length is 1.58 Å. The H(5)-O(8) bond length is 1.01 Å. In the sixteenth H site, H(6) is bonded in a single-bond geometry to one C(7) atom. In the seventeenth H site, H(7) is bonded in a single-bond geometry to one C(7) atom. In the eighteenth H site, H(8) is bonded in a single-bond geometry to one C(8) atom. In the nineteenth H site, H(9) is bonded in a single-bond geometry to one C(8) atom. In the twentieth H site, H(10) is bonded in a single-bond geometry to one C(8) atom. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Al(1), one H(1), and one H(2) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one P(1) and one H(3) atom. In the third O site, O(3) is bonded in a linear geometry to one Al(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Al(1), one P(1), and one H(2) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one P(2), one H(3), and one H(4) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one P(2), one H(4), and one H(5) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one Al(1) and one P(2) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one P(3) and one H(5) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one Al(1) and one P(3) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one Al(1) and one P(3) atom. Linkers: 6 Cc1c(CP([O])(=O)O)c(C)c(CP([O])(=O)O)c(C)c1CP([O])(=O)O. Metal clusters: 6 [Al]. The MOF has largest included sphere 11.22 A, density 1.00 g/cm3, surface area 3910.19 m2/g, accessible volume 0.52 cm3/g