The compound described by Mn3Sb(PO4)4 crystallizes in the monoclinic Cm space group. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a distorted rectangular see-saw-like geometry to one O(11), one O(6), two equivalent O(14), and two equivalent O(18) atoms. In the second Mn site, Mn(2) is bonded to one O(12), one O(13), one O(14), one O(17), one O(18), and one O(4) atom to form distorted MnO6 pentagonal pyramids that share corners with two equivalent Mn(4)O6 pentagonal pyramids,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(5)O4 tetrahedra,  a cornercorner with one P(6)O4 tetrahedra, and  an edgeedge with one P(5)O4 tetrahedra. In the third Mn site, Mn(3) is bonded in a 6-coordinate geometry to one O(15), one O(16), one O(19), one O(20), one O(3), and one O(7) atom. In the fourth Mn site, Mn(4) is bonded to one O(10), one O(5), two equivalent O(13), and two equivalent O(17) atoms to form distorted MnO6 pentagonal pyramids that share corners with four equivalent Mn(2)O6 pentagonal pyramids,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent P(5)O4 tetrahedra, and  an edgeedge with one P(1)O4 tetrahedra. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one O(2), one O(8), two equivalent O(16), and two equivalent O(19) atoms to form SbO6 octahedra that share  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, corners with two equivalent P(6)O4 tetrahedra, and  an edgeedge with one P(4)O4 tetrahedra. In the second Sb site, Sb(2) is bonded to one O(1), one O(9), two equivalent O(15), and two equivalent O(20) atoms to form SbO6 pentagonal pyramids that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent P(6)O4 tetrahedra, and  an edgeedge with one P(3)O4 tetrahedra. There are six inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(11), and two equivalent O(13) atoms to form PO4 tetrahedra that share  a cornercorner with one Sb(2)O6 pentagonal pyramid, corners with two equivalent Mn(2)O6 pentagonal pyramids, and  an edgeedge with one Mn(4)O6 pentagonal pyramid. In the second P site, P(2) is bonded to one O(10), one O(2), and two equivalent O(14) atoms to form PO4 tetrahedra that share  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Mn(4)O6 pentagonal pyramid, and corners with two equivalent Mn(2)O6 pentagonal pyramids. The corner-sharing octahedral tilt angles are 47°. In the third P site, P(3) is bonded to one O(6), one O(8), and two equivalent O(15) atoms to form PO4 tetrahedra that share  a cornercorner with one Sb(1)O6 octahedra and  an edgeedge with one Sb(2)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles are 38°. In the fourth P site, P(4) is bonded to one O(5), one O(9), and two equivalent O(16) atoms to form PO4 tetrahedra that share  a cornercorner with one Mn(4)O6 pentagonal pyramid,  a cornercorner with one Sb(2)O6 pentagonal pyramid, and  an edgeedge with one Sb(1)O6 octahedra. In the fifth P site, P(5) is bonded to one O(17), one O(18), one O(4), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Mn(2)O6 pentagonal pyramid,  a cornercorner with one Mn(4)O6 pentagonal pyramid, and  an edgeedge with one Mn(2)O6 pentagonal pyramid. In the sixth P site, P(6) is bonded to one O(12), one O(19), one O(20), and one O(3) atom to form PO4 tetrahedra that share  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Mn(2)O6 pentagonal pyramid, and  a cornercorner with one Sb(2)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles are 54°. There are twenty inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Sb(2) and one P(1) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Sb(1) and one P(2) atom. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Mn(3) and one P(6) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Mn(2) and one P(5) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Mn(4) and one P(4) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one Mn(1) and one P(3) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one Mn(3) and one P(5) atom. In the eighth O site, O(8) is bonded in a bent 150 degrees geometry to one Sb(1) and one P(3) atom. In the ninth O site, O(9) is bonded in a distorted bent 150 degrees geometry to one Sb(2) and one P(4) atom. In the tenth O site, O(10) is bonded in a bent 120 degrees geometry to one Mn(4) and one P(2) atom. In the eleventh O site, O(11) is bonded in a bent 120 degrees geometry to one Mn(1) and one P(1) atom. In the twelfth O site, O(12) is bonded in a bent 120 degrees geometry to one Mn(2) and one P(6) atom. In the thirteenth O site, O(13) is bonded in a 3-coordinate geometry to one Mn(2), one Mn(4), and one P(1) atom. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to one Mn(1), one Mn(2), and one P(2) atom. In the fifteenth O site, O(15) is bonded in a 3-coordinate geometry to one Mn(3), one Sb(2), and one P(3) atom. In the sixteenth O site, O(16) is bonded in a distorted trigonal planar geometry to one Mn(3), one Sb(1), and one P(4) atom. In the seventeenth O site, O(17) is bonded in a 3-coordinate geometry to one Mn(2), one Mn(4), and one P(5) atom. In the eighteenth O site, O(18) is bonded in a 3-coordinate geometry to one Mn(1), one Mn(2), and one P(5) atom. In the nineteenth O site, O(19) is bonded in a 3-coordinate geometry to one Mn(3), one Sb(1), and one P(6) atom. In the twentieth O site, O(20) is bonded in a distorted trigonal planar geometry to one Mn(3), one Sb(2), and one P(6) atom. is represented by the CIF file [CIF]
data_Mn3Sb(PO4)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.958
_cell_length_b   11.095
_cell_length_c   7.957
_cell_angle_alpha   74.418
_cell_angle_beta   78.651
_cell_angle_gamma   105.560
_symmetry_Int_Tables_number   1
_cell_volume   623.976
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Mn  Mn0  1  0.326  0.790  0.924  1.0
  Mn  Mn1  1  0.774  0.709  0.980  1.0
  Mn  Mn2  1  0.270  0.709  0.476  1.0
  Mn  Mn3  1  0.707  0.219  0.045  1.0
  Mn  Mn4  1  0.205  0.219  0.543  1.0
  Mn  Mn5  1  0.807  0.784  0.443  1.0
  Sb  Sb6  1  0.748  0.284  0.502  1.0
  Sb  Sb7  1  0.240  0.287  0.010  1.0
  P  P8  1  0.485  0.606  0.765  1.0
  P  P9  1  0.980  0.603  0.270  1.0
  P  P10  1  0.381  0.101  0.869  1.0
  P  P11  1  0.856  0.086  0.394  1.0
  P  P12  1  0.114  0.891  0.636  1.0
  P  P13  1  0.614  0.891  0.136  1.0
  P  P14  1  0.025  0.413  0.706  1.0
  P  P15  1  0.544  0.413  0.225  1.0
  O  O16  1  0.446  0.456  0.804  1.0
  O  O17  1  0.938  0.447  0.312  1.0
  O  O18  1  0.675  0.384  0.090  1.0
  O  O19  1  0.160  0.384  0.575  1.0
  O  O20  1  0.953  0.867  0.802  1.0
  O  O21  1  0.448  0.867  0.296  1.0
  O  O22  1  0.754  0.938  0.496  1.0
  O  O23  1  0.295  0.950  0.955  1.0
  O  O24  1  0.710  0.039  0.040  1.0
  O  O25  1  0.211  0.039  0.540  1.0
  O  O26  1  0.548  0.132  0.702  1.0
  O  O27  1  0.014  0.111  0.236  1.0
  O  O28  1  0.837  0.621  0.413  1.0
  O  O29  1  0.340  0.624  0.910  1.0
  O  O30  1  0.074  0.564  0.667  1.0
  O  O31  1  0.583  0.564  0.177  1.0
  O  O32  1  0.482  0.675  0.568  1.0
  O  O33  1  0.978  0.666  0.072  1.0
  O  O34  1  0.682  0.675  0.768  1.0
  O  O35  1  0.178  0.666  0.271  1.0
  O  O36  1  0.242  0.168  0.813  1.0
  O  O37  1  0.721  0.166  0.338  1.0
  O  O38  1  0.437  0.168  0.008  1.0
  O  O39  1  0.912  0.166  0.529  1.0
  O  O40  1  0.049  0.822  0.500  1.0
  O  O41  1  0.553  0.820  1.000  1.0
  O  O42  1  0.250  0.820  0.697  1.0
  O  O43  1  0.750  0.823  0.201  1.0
  O  O44  1  0.817  0.351  0.697  1.0
  O  O45  1  0.340  0.337  0.253  1.0
  O  O46  1  0.997  0.337  0.910  1.0
  O  O47  1  0.553  0.351  0.433  1.0
[/CIF]
.
The compound described by Mn3Sb(PO4)4 crystallizes in the monoclinic Cm space group. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a distorted rectangular see-saw-like geometry to one O(11), one O(6), two equivalent O(14), and two equivalent O(18) atoms. In the second Mn site, Mn(2) is bonded to one O(12), one O(13), one O(14), one O(17), one O(18), and one O(4) atom to form distorted MnO6 pentagonal pyramids that share corners with two equivalent Mn(4)O6 pentagonal pyramids,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(5)O4 tetrahedra,  a cornercorner with one P(6)O4 tetrahedra, and  an edgeedge with one P(5)O4 tetrahedra. In the third Mn site, Mn(3) is bonded in a 6-coordinate geometry to one O(15), one O(16), one O(19), one O(20), one O(3), and one O(7) atom. In the fourth Mn site, Mn(4) is bonded to one O(10), one O(5), two equivalent O(13), and two equivalent O(17) atoms to form distorted MnO6 pentagonal pyramids that share corners with four equivalent Mn(2)O6 pentagonal pyramids,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent P(5)O4 tetrahedra, and  an edgeedge with one P(1)O4 tetrahedra. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one O(2), one O(8), two equivalent O(16), and two equivalent O(19) atoms to form SbO6 octahedra that share  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, corners with two equivalent P(6)O4 tetrahedra, and  an edgeedge with one P(4)O4 tetrahedra. In the second Sb site, Sb(2) is bonded to one O(1), one O(9), two equivalent O(15), and two equivalent O(20) atoms to form SbO6 pentagonal pyramids that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent P(6)O4 tetrahedra, and  an edgeedge with one P(3)O4 tetrahedra. There are six inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(11), and two equivalent O(13) atoms to form PO4 tetrahedra that share  a cornercorner with one Sb(2)O6 pentagonal pyramid, corners with two equivalent Mn(2)O6 pentagonal pyramids, and  an edgeedge with one Mn(4)O6 pentagonal pyramid. In the second P site, P(2) is bonded to one O(10), one O(2), and two equivalent O(14) atoms to form PO4 tetrahedra that share  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Mn(4)O6 pentagonal pyramid, and corners with two equivalent Mn(2)O6 pentagonal pyramids. The corner-sharing octahedral tilt angles are 47°. In the third P site, P(3) is bonded to one O(6), one O(8), and two equivalent O(15) atoms to form PO4 tetrahedra that share  a cornercorner with one Sb(1)O6 octahedra and  an edgeedge with one Sb(2)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles are 38°. In the fourth P site, P(4) is bonded to one O(5), one O(9), and two equivalent O(16) atoms to form PO4 tetrahedra that share  a cornercorner with one Mn(4)O6 pentagonal pyramid,  a cornercorner with one Sb(2)O6 pentagonal pyramid, and  an edgeedge with one Sb(1)O6 octahedra. In the fifth P site, P(5) is bonded to one O(17), one O(18), one O(4), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Mn(2)O6 pentagonal pyramid,  a cornercorner with one Mn(4)O6 pentagonal pyramid, and  an edgeedge with one Mn(2)O6 pentagonal pyramid. In the sixth P site, P(6) is bonded to one O(12), one O(19), one O(20), and one O(3) atom to form PO4 tetrahedra that share  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Mn(2)O6 pentagonal pyramid, and  a cornercorner with one Sb(2)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles are 54°. There are twenty inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Sb(2) and one P(1) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Sb(1) and one P(2) atom. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Mn(3) and one P(6) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Mn(2) and one P(5) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Mn(4) and one P(4) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one Mn(1) and one P(3) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one Mn(3) and one P(5) atom. In the eighth O site, O(8) is bonded in a bent 150 degrees geometry to one Sb(1) and one P(3) atom. In the ninth O site, O(9) is bonded in a distorted bent 150 degrees geometry to one Sb(2) and one P(4) atom. In the tenth O site, O(10) is bonded in a bent 120 degrees geometry to one Mn(4) and one P(2) atom. In the eleventh O site, O(11) is bonded in a bent 120 degrees geometry to one Mn(1) and one P(1) atom. In the twelfth O site, O(12) is bonded in a bent 120 degrees geometry to one Mn(2) and one P(6) atom. In the thirteenth O site, O(13) is bonded in a 3-coordinate geometry to one Mn(2), one Mn(4), and one P(1) atom. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to one Mn(1), one Mn(2), and one P(2) atom. In the fifteenth O site, O(15) is bonded in a 3-coordinate geometry to one Mn(3), one Sb(2), and one P(3) atom. In the sixteenth O site, O(16) is bonded in a distorted trigonal planar geometry to one Mn(3), one Sb(1), and one P(4) atom. In the seventeenth O site, O(17) is bonded in a 3-coordinate geometry to one Mn(2), one Mn(4), and one P(5) atom. In the eighteenth O site, O(18) is bonded in a 3-coordinate geometry to one Mn(1), one Mn(2), and one P(5) atom. In the nineteenth O site, O(19) is bonded in a 3-coordinate geometry to one Mn(3), one Sb(1), and one P(6) atom. In the twentieth O site, O(20) is bonded in a distorted trigonal planar geometry to one Mn(3), one Sb(2), and one P(6) atom. is represented by the CIF file [CIF]
data_Mn3Sb(PO4)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.958
_cell_length_b   11.095
_cell_length_c   7.957
_cell_angle_alpha   74.418
_cell_angle_beta   78.651
_cell_angle_gamma   105.560
_symmetry_Int_Tables_number   1
_cell_volume   623.976
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Mn  Mn0  1  0.326  0.790  0.924  1.0
  Mn  Mn1  1  0.774  0.709  0.980  1.0
  Mn  Mn2  1  0.270  0.709  0.476  1.0
  Mn  Mn3  1  0.707  0.219  0.045  1.0
  Mn  Mn4  1  0.205  0.219  0.543  1.0
  Mn  Mn5  1  0.807  0.784  0.443  1.0
  Sb  Sb6  1  0.748  0.284  0.502  1.0
  Sb  Sb7  1  0.240  0.287  0.010  1.0
  P  P8  1  0.485  0.606  0.765  1.0
  P  P9  1  0.980  0.603  0.270  1.0
  P  P10  1  0.381  0.101  0.869  1.0
  P  P11  1  0.856  0.086  0.394  1.0
  P  P12  1  0.114  0.891  0.636  1.0
  P  P13  1  0.614  0.891  0.136  1.0
  P  P14  1  0.025  0.413  0.706  1.0
  P  P15  1  0.544  0.413  0.225  1.0
  O  O16  1  0.446  0.456  0.804  1.0
  O  O17  1  0.938  0.447  0.312  1.0
  O  O18  1  0.675  0.384  0.090  1.0
  O  O19  1  0.160  0.384  0.575  1.0
  O  O20  1  0.953  0.867  0.802  1.0
  O  O21  1  0.448  0.867  0.296  1.0
  O  O22  1  0.754  0.938  0.496  1.0
  O  O23  1  0.295  0.950  0.955  1.0
  O  O24  1  0.710  0.039  0.040  1.0
  O  O25  1  0.211  0.039  0.540  1.0
  O  O26  1  0.548  0.132  0.702  1.0
  O  O27  1  0.014  0.111  0.236  1.0
  O  O28  1  0.837  0.621  0.413  1.0
  O  O29  1  0.340  0.624  0.910  1.0
  O  O30  1  0.074  0.564  0.667  1.0
  O  O31  1  0.583  0.564  0.177  1.0
  O  O32  1  0.482  0.675  0.568  1.0
  O  O33  1  0.978  0.666  0.072  1.0
  O  O34  1  0.682  0.675  0.768  1.0
  O  O35  1  0.178  0.666  0.271  1.0
  O  O36  1  0.242  0.168  0.813  1.0
  O  O37  1  0.721  0.166  0.338  1.0
  O  O38  1  0.437  0.168  0.008  1.0
  O  O39  1  0.912  0.166  0.529  1.0
  O  O40  1  0.049  0.822  0.500  1.0
  O  O41  1  0.553  0.820  1.000  1.0
  O  O42  1  0.250  0.820  0.697  1.0
  O  O43  1  0.750  0.823  0.201  1.0
  O  O44  1  0.817  0.351  0.697  1.0
  O  O45  1  0.340  0.337  0.253  1.0
  O  O46  1  0.997  0.337  0.910  1.0
  O  O47  1  0.553  0.351  0.433  1.0
[/CIF]
.