MgSb2P2(HO5)2 crystallizes in the triclinic P-1 space group. Mg(1) is bonded to two equivalent O(1), two equivalent O(4), and two equivalent O(5) atoms to form MgO6 octahedra that share corners with two equivalent Sb(1)O6 octahedra, corners with four equivalent P(1)O4 tetrahedra, and faces with two equivalent Sb(2)O6 octahedra. The corner-sharing octahedral tilt angles are 52°. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form SbO6 octahedra that share corners with two equivalent Mg(1)O6 octahedra, corners with two equivalent Sb(2)O6 octahedra, and corners with four equivalent P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 52-61°. In the second Sb site, Sb(2) is bonded to two equivalent O(1), two equivalent O(4), and two equivalent O(5) atoms to form distorted SbO6 octahedra that share corners with two equivalent Sb(1)O6 octahedra, corners with four equivalent P(1)O4 tetrahedra, and faces with two equivalent Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles are 61°. P(1) is bonded to one O(2), one O(3), one O(4), and one O(5) atom to form PO4 tetrahedra that share corners with two equivalent Mg(1)O6 octahedra, corners with two equivalent Sb(1)O6 octahedra, and corners with two equivalent Sb(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 34-55°. H(1) is bonded in a single-bond geometry to one O(1) atom. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Mg(1), one Sb(1), one Sb(2), and one H(1) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Sb(1) and one P(1) atom. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Sb(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Mg(1), one Sb(2), and one P(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Mg(1), one Sb(2), and one P(1) atom.
MgSb2P2(HO5)2 crystallizes in the triclinic P-1 space group. Mg(1) is bonded to two equivalent O(1), two equivalent O(4), and two equivalent O(5) atoms to form MgO6 octahedra that share corners with two equivalent Sb(1)O6 octahedra, corners with four equivalent P(1)O4 tetrahedra, and faces with two equivalent Sb(2)O6 octahedra. The corner-sharing octahedral tilt angles are 52°. Both Mg(1)-O(1) bond lengths are 2.13 Å. Both Mg(1)-O(4) bond lengths are 2.09 Å. Both Mg(1)-O(5) bond lengths are 2.08 Å. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form SbO6 octahedra that share corners with two equivalent Mg(1)O6 octahedra, corners with two equivalent Sb(2)O6 octahedra, and corners with four equivalent P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 52-61°. Both Sb(1)-O(1) bond lengths are 2.38 Å. Both Sb(1)-O(2) bond lengths are 2.34 Å. Both Sb(1)-O(3) bond lengths are 2.28 Å. In the second Sb site, Sb(2) is bonded to two equivalent O(1), two equivalent O(4), and two equivalent O(5) atoms to form distorted SbO6 octahedra that share corners with two equivalent Sb(1)O6 octahedra, corners with four equivalent P(1)O4 tetrahedra, and faces with two equivalent Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles are 61°. Both Sb(2)-O(1) bond lengths are 2.32 Å. Both Sb(2)-O(4) bond lengths are 2.29 Å. Both Sb(2)-O(5) bond lengths are 2.30 Å. P(1) is bonded to one O(2), one O(3), one O(4), and one O(5) atom to form PO4 tetrahedra that share corners with two equivalent Mg(1)O6 octahedra, corners with two equivalent Sb(1)O6 octahedra, and corners with two equivalent Sb(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 34-55°. The P(1)-O(2) bond length is 1.55 Å. The P(1)-O(3) bond length is 1.54 Å. The P(1)-O(4) bond length is 1.57 Å. The P(1)-O(5) bond length is 1.57 Å. H(1) is bonded in a single-bond geometry to one O(1) atom. The H(1)-O(1) bond length is 0.99 Å. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Mg(1), one Sb(1), one Sb(2), and one H(1) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Sb(1) and one P(1) atom. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Sb(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Mg(1), one Sb(2), and one P(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Mg(1), one Sb(2), and one P(1) atom.