MnSb3(PO4)4 crystallizes in the monoclinic Pm space group. Mn(1) is bonded to one O(1), one O(9), two equivalent O(11), and two equivalent O(5) atoms to form distorted MnO6 pentagonal pyramids that share corners with four equivalent Sb(2)O6 pentagonal pyramids,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent P(4)O4 tetrahedra, and  an edgeedge with one P(2)O4 tetrahedra. There are three inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one O(12), one O(4), two equivalent O(2), and two equivalent O(8) atoms to form SbO6 pentagonal pyramids that share corners with four equivalent Sb(3)O6 octahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, and  an edgeedge with one P(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 49-52°. In the second Sb site, Sb(2) is bonded to one O(3), one O(7), two equivalent O(11), and two equivalent O(5) atoms to form SbO6 pentagonal pyramids that share corners with four equivalent Mn(1)O6 pentagonal pyramids,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, and  an edgeedge with one P(4)O4 tetrahedra. In the third Sb site, Sb(3) is bonded to one O(10), one O(6), two equivalent O(2), and two equivalent O(8) atoms to form distorted SbO6 octahedra that share corners with four equivalent Sb(1)O6 pentagonal pyramids,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, and  an edgeedge with one P(1)O4 tetrahedra. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(10), and two equivalent O(2) atoms to form PO4 tetrahedra that share  a cornercorner with one Sb(3)O6 octahedra,  a cornercorner with one Mn(1)O6 pentagonal pyramid, corners with two equivalent Sb(1)O6 pentagonal pyramids, and  an edgeedge with one Sb(3)O6 octahedra. The corner-sharing octahedral tilt angles are 46°. In the second P site, P(2) is bonded to one O(6), one O(9), and two equivalent O(5) atoms to form PO4 tetrahedra that share  a cornercorner with one Sb(3)O6 octahedra,  a cornercorner with one Mn(1)O6 pentagonal pyramid, corners with two equivalent Sb(2)O6 pentagonal pyramids, and  an edgeedge with one Mn(1)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles are 51°. In the third P site, P(3) is bonded to one O(4), one O(7), and two equivalent O(8) atoms to form PO4 tetrahedra that share corners with two equivalent Sb(3)O6 octahedra,  a cornercorner with one Sb(1)O6 pentagonal pyramid,  a cornercorner with one Sb(2)O6 pentagonal pyramid, and  an edgeedge with one Sb(1)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles are 55°. In the fourth P site, P(4) is bonded to one O(12), one O(3), and two equivalent O(11) atoms to form PO4 tetrahedra that share  a cornercorner with one Sb(1)O6 pentagonal pyramid,  a cornercorner with one Sb(2)O6 pentagonal pyramid, corners with two equivalent Mn(1)O6 pentagonal pyramids, and  an edgeedge with one Sb(2)O6 pentagonal pyramid. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Mn(1) and one P(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Sb(1), one Sb(3), and one P(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Sb(2) and one P(4) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Sb(1) and one P(3) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Mn(1), one Sb(2), and one P(2) atom. In the sixth O site, O(6) is bonded in a distorted bent 120 degrees geometry to one Sb(3) and one P(2) atom. In the seventh O site, O(7) is bonded in a bent 120 degrees geometry to one Sb(2) and one P(3) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Sb(1), one Sb(3), and one P(3) atom. In the ninth O site, O(9) is bonded in a bent 120 degrees geometry to one Mn(1) and one P(2) atom. In the tenth O site, O(10) is bonded in a 2-coordinate geometry to one Sb(3) and one P(1) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate geometry to one Mn(1), one Sb(2), and one P(4) atom. In the twelfth O site, O(12) is bonded in a distorted bent 120 degrees geometry to one Sb(1) and one P(4) atom.
MnSb3(PO4)4 crystallizes in the monoclinic Pm space group. Mn(1) is bonded to one O(1), one O(9), two equivalent O(11), and two equivalent O(5) atoms to form distorted MnO6 pentagonal pyramids that share corners with four equivalent Sb(2)O6 pentagonal pyramids,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent P(4)O4 tetrahedra, and  an edgeedge with one P(2)O4 tetrahedra. The Mn(1)-O(1) bond length is 2.05 Å. The Mn(1)-O(9) bond length is 2.03 Å. Both Mn(1)-O(11) bond lengths are 2.38 Å. Both Mn(1)-O(5) bond lengths are 2.30 Å. There are three inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one O(12), one O(4), two equivalent O(2), and two equivalent O(8) atoms to form SbO6 pentagonal pyramids that share corners with four equivalent Sb(3)O6 octahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, and  an edgeedge with one P(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 49-52°. The Sb(1)-O(12) bond length is 2.21 Å. The Sb(1)-O(4) bond length is 2.28 Å. Both Sb(1)-O(2) bond lengths are 2.41 Å. Both Sb(1)-O(8) bond lengths are 2.25 Å. In the second Sb site, Sb(2) is bonded to one O(3), one O(7), two equivalent O(11), and two equivalent O(5) atoms to form SbO6 pentagonal pyramids that share corners with four equivalent Mn(1)O6 pentagonal pyramids,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, and  an edgeedge with one P(4)O4 tetrahedra. The Sb(2)-O(3) bond length is 2.18 Å. The Sb(2)-O(7) bond length is 2.21 Å. Both Sb(2)-O(11) bond lengths are 2.20 Å. Both Sb(2)-O(5) bond lengths are 2.36 Å. In the third Sb site, Sb(3) is bonded to one O(10), one O(6), two equivalent O(2), and two equivalent O(8) atoms to form distorted SbO6 octahedra that share corners with four equivalent Sb(1)O6 pentagonal pyramids,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, and  an edgeedge with one P(1)O4 tetrahedra. The Sb(3)-O(10) bond length is 2.20 Å. The Sb(3)-O(6) bond length is 2.22 Å. Both Sb(3)-O(2) bond lengths are 2.23 Å. Both Sb(3)-O(8) bond lengths are 2.46 Å. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(10), and two equivalent O(2) atoms to form PO4 tetrahedra that share  a cornercorner with one Sb(3)O6 octahedra,  a cornercorner with one Mn(1)O6 pentagonal pyramid, corners with two equivalent Sb(1)O6 pentagonal pyramids, and  an edgeedge with one Sb(3)O6 octahedra. The corner-sharing octahedral tilt angles are 46°. The P(1)-O(1) bond length is 1.51 Å. The P(1)-O(10) bond length is 1.53 Å. Both P(1)-O(2) bond lengths are 1.60 Å. In the second P site, P(2) is bonded to one O(6), one O(9), and two equivalent O(5) atoms to form PO4 tetrahedra that share  a cornercorner with one Sb(3)O6 octahedra,  a cornercorner with one Mn(1)O6 pentagonal pyramid, corners with two equivalent Sb(2)O6 pentagonal pyramids, and  an edgeedge with one Mn(1)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles are 51°. The P(2)-O(6) bond length is 1.55 Å. The P(2)-O(9) bond length is 1.52 Å. Both P(2)-O(5) bond lengths are 1.59 Å. In the third P site, P(3) is bonded to one O(4), one O(7), and two equivalent O(8) atoms to form PO4 tetrahedra that share corners with two equivalent Sb(3)O6 octahedra,  a cornercorner with one Sb(1)O6 pentagonal pyramid,  a cornercorner with one Sb(2)O6 pentagonal pyramid, and  an edgeedge with one Sb(1)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles are 55°. The P(3)-O(4) bond length is 1.53 Å. The P(3)-O(7) bond length is 1.54 Å. Both P(3)-O(8) bond lengths are 1.59 Å. In the fourth P site, P(4) is bonded to one O(12), one O(3), and two equivalent O(11) atoms to form PO4 tetrahedra that share  a cornercorner with one Sb(1)O6 pentagonal pyramid,  a cornercorner with one Sb(2)O6 pentagonal pyramid, corners with two equivalent Mn(1)O6 pentagonal pyramids, and  an edgeedge with one Sb(2)O6 pentagonal pyramid. The P(4)-O(12) bond length is 1.53 Å. The P(4)-O(3) bond length is 1.55 Å. Both P(4)-O(11) bond lengths are 1.59 Å. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Mn(1) and one P(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Sb(1), one Sb(3), and one P(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Sb(2) and one P(4) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Sb(1) and one P(3) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Mn(1), one Sb(2), and one P(2) atom. In the sixth O site, O(6) is bonded in a distorted bent 120 degrees geometry to one Sb(3) and one P(2) atom. In the seventh O site, O(7) is bonded in a bent 120 degrees geometry to one Sb(2) and one P(3) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Sb(1), one Sb(3), and one P(3) atom. In the ninth O site, O(9) is bonded in a bent 120 degrees geometry to one Mn(1) and one P(2) atom. In the tenth O site, O(10) is bonded in a 2-coordinate geometry to one Sb(3) and one P(1) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate geometry to one Mn(1), one Sb(2), and one P(4) atom. In the twelfth O site, O(12) is bonded in a distorted bent 120 degrees geometry to one Sb(1) and one P(4) atom.