Al3P2(H4O7)2 crystallizes in the triclinic P-1 space group. There are three inequivalent Al sites. In the first Al site, Al(1) is bonded to one O(10), one O(5), one O(6), one O(7), one O(8), and one O(9) atom to form AlO6 octahedra that share  a cornercorner with one Al(3)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, and  an edgeedge with one Al(2)O6 octahedra. The corner-sharing octahedral tilt angles are 41°. In the second Al site, Al(2) is bonded to one O(11), one O(12), one O(13), one O(4), one O(5), and one O(6) atom to form AlO6 octahedra that share  a cornercorner with one Al(3)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, and  an edgeedge with one Al(1)O6 octahedra. The corner-sharing octahedral tilt angles are 42°. In the third Al site, Al(3) is bonded to one O(1), one O(12), one O(14), one O(2), one O(3), and one O(9) atom to form AlO6 octahedra that share  a cornercorner with one Al(1)O6 octahedra,  a cornercorner with one Al(2)O6 octahedra, corners with two equivalent P(1)O4 tetrahedra, and corners with two equivalent P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 41-42°. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(11), one O(14), one O(3), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Al(1)O6 octahedra,  a cornercorner with one Al(2)O6 octahedra, and corners with two equivalent Al(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 36-45°. In the second P site, P(2) is bonded to one O(1), one O(13), one O(2), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Al(1)O6 octahedra,  a cornercorner with one Al(2)O6 octahedra, and corners with two equivalent Al(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 41-44°. There are eight inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(4) atom. In the second H site, H(2) is bonded in a single-bond geometry to one O(4) atom. In the third H site, H(3) is bonded in a single-bond geometry to one O(10) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one O(10) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one O(5) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one O(6) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one O(9) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one O(12) atom. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Al(3) and one P(2) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Al(3) and one P(2) atom. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Al(3) and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Al(2), one H(1), and one H(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Al(1), one Al(2), and one H(5) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Al(1), one Al(2), and one H(6) 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 150 degrees geometry to one Al(1) and one P(1) atom. In the ninth O site, O(9) is bonded in a distorted single-bond geometry to one Al(1), one Al(3), and one H(7) atom. In the tenth O site, O(10) is bonded in a distorted water-like geometry to one Al(1), one H(3), and one H(4) atom. In the eleventh O site, O(11) is bonded in a bent 150 degrees geometry to one Al(2) and one P(1) atom. In the twelfth O site, O(12) is bonded in a distorted single-bond geometry to one Al(2), one Al(3), and one H(8) atom. In the thirteenth O site, O(13) is bonded in a distorted bent 150 degrees geometry to one Al(2) and one P(2) atom. In the fourteenth O site, O(14) is bonded in a bent 150 degrees geometry to one Al(3) and one P(1) atom.
Al3P2(H4O7)2 crystallizes in the triclinic P-1 space group. There are three inequivalent Al sites. In the first Al site, Al(1) is bonded to one O(10), one O(5), one O(6), one O(7), one O(8), and one O(9) atom to form AlO6 octahedra that share  a cornercorner with one Al(3)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, and  an edgeedge with one Al(2)O6 octahedra. The corner-sharing octahedral tilt angles are 41°. The Al(1)-O(10) bond length is 2.01 Å. The Al(1)-O(5) bond length is 1.90 Å. The Al(1)-O(6) bond length is 1.87 Å. The Al(1)-O(7) bond length is 1.88 Å. The Al(1)-O(8) bond length is 1.88 Å. The Al(1)-O(9) bond length is 1.92 Å. In the second Al site, Al(2) is bonded to one O(11), one O(12), one O(13), one O(4), one O(5), and one O(6) atom to form AlO6 octahedra that share  a cornercorner with one Al(3)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, and  an edgeedge with one Al(1)O6 octahedra. The corner-sharing octahedral tilt angles are 42°. The Al(2)-O(11) bond length is 1.86 Å. The Al(2)-O(12) bond length is 1.93 Å. The Al(2)-O(13) bond length is 1.93 Å. The Al(2)-O(4) bond length is 1.98 Å. The Al(2)-O(5) bond length is 1.87 Å. The Al(2)-O(6) bond length is 1.89 Å. In the third Al site, Al(3) is bonded to one O(1), one O(12), one O(14), one O(2), one O(3), and one O(9) atom to form AlO6 octahedra that share  a cornercorner with one Al(1)O6 octahedra,  a cornercorner with one Al(2)O6 octahedra, corners with two equivalent P(1)O4 tetrahedra, and corners with two equivalent P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 41-42°. The Al(3)-O(1) bond length is 1.93 Å. The Al(3)-O(12) bond length is 1.92 Å. The Al(3)-O(14) bond length is 1.92 Å. The Al(3)-O(2) bond length is 1.89 Å. The Al(3)-O(3) bond length is 1.90 Å. The Al(3)-O(9) bond length is 1.92 Å. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(11), one O(14), one O(3), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Al(1)O6 octahedra,  a cornercorner with one Al(2)O6 octahedra, and corners with two equivalent Al(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 36-45°. The P(1)-O(11) bond length is 1.54 Å. The P(1)-O(14) bond length is 1.55 Å. The P(1)-O(3) bond length is 1.55 Å. The P(1)-O(8) bond length is 1.53 Å. In the second P site, P(2) is bonded to one O(1), one O(13), one O(2), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Al(1)O6 octahedra,  a cornercorner with one Al(2)O6 octahedra, and corners with two equivalent Al(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 41-44°. The P(2)-O(1) bond length is 1.55 Å. The P(2)-O(13) bond length is 1.55 Å. The P(2)-O(2) bond length is 1.55 Å. The P(2)-O(7) bond length is 1.54 Å. There are eight inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(4) atom. The H(1)-O(4) bond length is 0.98 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 0.98 Å. In the third H site, H(3) is bonded in a single-bond geometry to one O(10) atom. The H(3)-O(10) bond length is 1.00 Å. In the fourth H site, H(4) is bonded in a single-bond geometry to one O(10) atom. The H(4)-O(10) bond length is 0.99 Å. In the fifth H site, H(5) is bonded in a single-bond geometry to one O(5) atom. The H(5)-O(5) bond length is 0.98 Å. In the sixth H site, H(6) is bonded in a single-bond geometry to one O(6) atom. The H(6)-O(6) bond length is 0.98 Å. In the seventh H site, H(7) is bonded in a single-bond geometry to one O(9) atom. The H(7)-O(9) bond length is 0.98 Å. In the eighth H site, H(8) is bonded in a single-bond geometry to one O(12) atom. The H(8)-O(12) bond length is 0.98 Å. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Al(3) and one P(2) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Al(3) and one P(2) atom. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Al(3) and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Al(2), one H(1), and one H(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Al(1), one Al(2), and one H(5) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Al(1), one Al(2), and one H(6) 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 150 degrees geometry to one Al(1) and one P(1) atom. In the ninth O site, O(9) is bonded in a distorted single-bond geometry to one Al(1), one Al(3), and one H(7) atom. In the tenth O site, O(10) is bonded in a distorted water-like geometry to one Al(1), one H(3), and one H(4) atom. In the eleventh O site, O(11) is bonded in a bent 150 degrees geometry to one Al(2) and one P(1) atom. In the twelfth O site, O(12) is bonded in a distorted single-bond geometry to one Al(2), one Al(3), and one H(8) atom. In the thirteenth O site, O(13) is bonded in a distorted bent 150 degrees geometry to one Al(2) and one P(2) atom. In the fourteenth O site, O(14) is bonded in a bent 150 degrees geometry to one Al(3) and one P(1) atom.