MgPO4 is quartz (alpha)-derived structured and crystallizes in the monoclinic C2/c space group. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to one O(1), one O(3), one O(8), and one O(9) atom to form MgO4 tetrahedra that share  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, and corners with two equivalent P(1)O4 tetrahedra. The Mg(1)-O(1) bond length is 1.91 Å. The Mg(1)-O(3) bond length is 1.95 Å. The Mg(1)-O(8) bond length is 1.93 Å. The Mg(1)-O(9) bond length is 1.91 Å. In the second Mg site, Mg(2) is bonded to one O(11), one O(13), one O(15), and one O(7) atom to form MgO4 tetrahedra that share  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, and corners with two equivalent P(4)O4 tetrahedra. The Mg(2)-O(11) bond length is 1.94 Å. The Mg(2)-O(13) bond length is 1.95 Å. The Mg(2)-O(15) bond length is 1.92 Å. The Mg(2)-O(7) bond length is 1.94 Å. In the third Mg site, Mg(3) is bonded to one O(10), one O(12), one O(14), and one O(4) atom to form MgO4 tetrahedra that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, and corners with two equivalent P(3)O4 tetrahedra. The Mg(3)-O(10) bond length is 1.91 Å. The Mg(3)-O(12) bond length is 1.98 Å. The Mg(3)-O(14) bond length is 1.93 Å. The Mg(3)-O(4) bond length is 1.96 Å. In the fourth Mg site, Mg(4) is bonded to one O(16), one O(2), one O(5), and one O(6) atom to form MgO4 tetrahedra that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, and corners with two equivalent P(2)O4 tetrahedra. The Mg(4)-O(16) bond length is 1.94 Å. The Mg(4)-O(2) bond length is 1.93 Å. The Mg(4)-O(5) bond length is 1.92 Å. The Mg(4)-O(6) bond length is 1.94 Å. There are four inequivalent P sites. In the first P site, 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 Mg(3)O4 tetrahedra,  a cornercorner with one Mg(4)O4 tetrahedra, and corners with two equivalent Mg(1)O4 tetrahedra. The P(1)-O(1) bond length is 1.51 Å. The P(1)-O(2) bond length is 1.52 Å. The P(1)-O(3) bond length is 1.54 Å. The P(1)-O(4) bond length is 1.55 Å. In the second P site, P(2) is bonded to one O(5), one O(6), one O(7), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Mg(1)O4 tetrahedra,  a cornercorner with one Mg(2)O4 tetrahedra, and corners with two equivalent Mg(4)O4 tetrahedra. The P(2)-O(5) bond length is 1.52 Å. The P(2)-O(6) bond length is 1.54 Å. The P(2)-O(7) bond length is 1.53 Å. The P(2)-O(8) bond length is 1.56 Å. In the third P site, P(3) is bonded to one O(10), one O(11), one O(12), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Mg(1)O4 tetrahedra,  a cornercorner with one Mg(2)O4 tetrahedra, and corners with two equivalent Mg(3)O4 tetrahedra. The P(3)-O(10) bond length is 1.53 Å. The P(3)-O(11) bond length is 1.55 Å. The P(3)-O(12) bond length is 1.55 Å. The P(3)-O(9) bond length is 1.52 Å. In the fourth P site, P(4) is bonded to one O(13), one O(14), one O(15), and one O(16) atom to form PO4 tetrahedra that share  a cornercorner with one Mg(3)O4 tetrahedra,  a cornercorner with one Mg(4)O4 tetrahedra, and corners with two equivalent Mg(2)O4 tetrahedra. The P(4)-O(13) bond length is 1.53 Å. The P(4)-O(14) bond length is 1.53 Å. The P(4)-O(15) bond length is 1.55 Å. The P(4)-O(16) bond length is 1.55 Å. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Mg(1) and one P(1) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Mg(4) and one P(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Mg(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one Mg(3) and one P(1) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one Mg(4) and one P(2) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Mg(4) and one P(2) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one Mg(2) and one P(2) atom. In the eighth O site, O(8) is bonded in a bent 150 degrees geometry to one Mg(1) and one P(2) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one Mg(1) and one P(3) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one Mg(3) and one P(3) atom. In the eleventh O site, O(11) is bonded in a distorted bent 150 degrees geometry to one Mg(2) and one P(3) atom. In the twelfth O site, O(12) is bonded in a bent 120 degrees geometry to one Mg(3) and one P(3) atom. In the thirteenth O site, O(13) is bonded in a distorted bent 120 degrees geometry to one Mg(2) and one P(4) atom. In the fourteenth O site, O(14) is bonded in a bent 150 degrees geometry to one Mg(3) and one P(4) atom. In the fifteenth O site, O(15) is bonded in a distorted bent 150 degrees geometry to one Mg(2) and one P(4) atom. In the sixteenth O site, O(16) is bonded in a distorted bent 150 degrees geometry to one Mg(4) and one P(4) atom. Linkers: 32 [O]P([O])([O])=O. Metal clusters: 32 [Mg]. The MOF has largest included sphere 4.14 A, density 1.62 g/cm3, surface area 3345.00 m2/g, accessible volume 0.27 cm3/g