The compound described by Mn4(PO4)3 crystallizes in the monoclinic Cc space group. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a 6-coordinate geometry to one O(1), one O(11), one O(3), one O(4), one O(5), and one O(6) atom. In the second Mn site, Mn(2) is bonded to one O(10), one O(11), one O(12), one O(2), one O(4), and one O(9) atom to form distorted MnO6 octahedra that share  a cornercorner with one P(3)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, and corners with three equivalent P(2)O4 tetrahedra. In the third Mn site, Mn(3) is bonded in a 6-coordinate geometry to one O(3), one O(7), two equivalent O(8), and two equivalent O(9) atoms. In the fourth Mn site, Mn(4) is bonded in a 6-coordinate geometry to one O(10), one O(2), one O(5), one O(6), one O(7), and one O(8) atom. There are three inequivalent P sites. In the first P site, P(1) is bonded to one O(2), one O(3), one O(5), and one O(9) atom to form PO4 tetrahedra that share corners with two equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-56°. In the second P site, P(2) is bonded to one O(10), one O(11), one O(12), and one O(8) atom to form PO4 tetrahedra that share corners with three equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 36-51°. In the third P site, P(3) is bonded to one O(1), one O(4), one O(6), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles are 58°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Mn(1) and one P(3) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Mn(2), one Mn(4), and one P(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(3), and one P(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Mn(1), one Mn(2), and one P(3) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(4), and one P(1) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(4), and one P(3) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Mn(3), one Mn(4), and one P(3) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Mn(4), two equivalent Mn(3), and one P(2) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Mn(2), two equivalent Mn(3), and one P(1) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one Mn(2), one Mn(4), and one P(2) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate geometry to one Mn(1), one Mn(2), and one P(2) atom. In the twelfth O site, O(12) is bonded in a bent 150 degrees geometry to one Mn(2) and one P(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Mn4(PO4)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.961
_cell_length_b   8.961
_cell_length_c   6.466
_cell_angle_alpha   73.007
_cell_angle_beta   73.007
_cell_angle_gamma   95.237
_symmetry_Int_Tables_number   1
_cell_volume   465.854
_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  0.059  0.350  0.387  1.0
  Mn  Mn1  1  0.646  0.943  0.110  1.0
  Mn  Mn2  1  0.525  0.516  0.044  1.0
  Mn  Mn3  1  0.943  0.646  0.610  1.0
  Mn  Mn4  1  0.732  0.259  0.258  1.0
  Mn  Mn5  1  0.516  0.525  0.544  1.0
  Mn  Mn6  1  0.259  0.732  0.758  1.0
  Mn  Mn7  1  0.350  0.059  0.887  1.0
  P  P8  1  0.301  0.696  0.250  1.0
  P  P9  1  0.662  0.871  0.629  1.0
  P  P10  1  0.696  0.301  0.750  1.0
  P  P11  1  0.128  0.343  0.866  1.0
  P  P12  1  0.343  0.128  0.366  1.0
  P  P13  1  0.871  0.662  0.129  1.0
  O  O14  1  0.173  0.182  0.880  1.0
  O  O15  1  0.720  0.194  0.967  1.0
  O  O16  1  0.182  0.173  0.380  1.0
  O  O17  1  0.275  0.526  0.233  1.0
  O  O18  1  0.040  0.393  0.687  1.0
  O  O19  1  0.281  0.810  0.032  1.0
  O  O20  1  0.338  0.007  0.601  1.0
  O  O21  1  0.476  0.279  0.296  1.0
  O  O22  1  0.530  0.714  0.704  1.0
  O  O23  1  0.476  0.715  0.257  1.0
  O  O24  1  0.663  0.990  0.398  1.0
  O  O25  1  0.393  0.040  0.187  1.0
  O  O26  1  0.610  0.956  0.809  1.0
  O  O27  1  0.956  0.610  0.309  1.0
  O  O28  1  0.279  0.476  0.796  1.0
  O  O29  1  0.990  0.663  0.898  1.0
  O  O30  1  0.194  0.720  0.467  1.0
  O  O31  1  0.715  0.476  0.757  1.0
  O  O32  1  0.826  0.823  0.113  1.0
  O  O33  1  0.007  0.338  0.101  1.0
  O  O34  1  0.714  0.530  0.204  1.0
  O  O35  1  0.823  0.826  0.613  1.0
  O  O36  1  0.810  0.281  0.532  1.0
  O  O37  1  0.526  0.275  0.733  1.0
[/CIF]
.
The compound described by Mn4(PO4)3 crystallizes in the monoclinic Cc space group. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a 6-coordinate geometry to one O(1), one O(11), one O(3), one O(4), one O(5), and one O(6) atom. In the second Mn site, Mn(2) is bonded to one O(10), one O(11), one O(12), one O(2), one O(4), and one O(9) atom to form distorted MnO6 octahedra that share  a cornercorner with one P(3)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, and corners with three equivalent P(2)O4 tetrahedra. In the third Mn site, Mn(3) is bonded in a 6-coordinate geometry to one O(3), one O(7), two equivalent O(8), and two equivalent O(9) atoms. In the fourth Mn site, Mn(4) is bonded in a 6-coordinate geometry to one O(10), one O(2), one O(5), one O(6), one O(7), and one O(8) atom. There are three inequivalent P sites. In the first P site, P(1) is bonded to one O(2), one O(3), one O(5), and one O(9) atom to form PO4 tetrahedra that share corners with two equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-56°. In the second P site, P(2) is bonded to one O(10), one O(11), one O(12), and one O(8) atom to form PO4 tetrahedra that share corners with three equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 36-51°. In the third P site, P(3) is bonded to one O(1), one O(4), one O(6), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles are 58°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Mn(1) and one P(3) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Mn(2), one Mn(4), and one P(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(3), and one P(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Mn(1), one Mn(2), and one P(3) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(4), and one P(1) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(4), and one P(3) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Mn(3), one Mn(4), and one P(3) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Mn(4), two equivalent Mn(3), and one P(2) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Mn(2), two equivalent Mn(3), and one P(1) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one Mn(2), one Mn(4), and one P(2) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate geometry to one Mn(1), one Mn(2), and one P(2) atom. In the twelfth O site, O(12) is bonded in a bent 150 degrees geometry to one Mn(2) and one P(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Mn4(PO4)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.961
_cell_length_b   8.961
_cell_length_c   6.466
_cell_angle_alpha   73.007
_cell_angle_beta   73.007
_cell_angle_gamma   95.237
_symmetry_Int_Tables_number   1
_cell_volume   465.854
_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  0.059  0.350  0.387  1.0
  Mn  Mn1  1  0.646  0.943  0.110  1.0
  Mn  Mn2  1  0.525  0.516  0.044  1.0
  Mn  Mn3  1  0.943  0.646  0.610  1.0
  Mn  Mn4  1  0.732  0.259  0.258  1.0
  Mn  Mn5  1  0.516  0.525  0.544  1.0
  Mn  Mn6  1  0.259  0.732  0.758  1.0
  Mn  Mn7  1  0.350  0.059  0.887  1.0
  P  P8  1  0.301  0.696  0.250  1.0
  P  P9  1  0.662  0.871  0.629  1.0
  P  P10  1  0.696  0.301  0.750  1.0
  P  P11  1  0.128  0.343  0.866  1.0
  P  P12  1  0.343  0.128  0.366  1.0
  P  P13  1  0.871  0.662  0.129  1.0
  O  O14  1  0.173  0.182  0.880  1.0
  O  O15  1  0.720  0.194  0.967  1.0
  O  O16  1  0.182  0.173  0.380  1.0
  O  O17  1  0.275  0.526  0.233  1.0
  O  O18  1  0.040  0.393  0.687  1.0
  O  O19  1  0.281  0.810  0.032  1.0
  O  O20  1  0.338  0.007  0.601  1.0
  O  O21  1  0.476  0.279  0.296  1.0
  O  O22  1  0.530  0.714  0.704  1.0
  O  O23  1  0.476  0.715  0.257  1.0
  O  O24  1  0.663  0.990  0.398  1.0
  O  O25  1  0.393  0.040  0.187  1.0
  O  O26  1  0.610  0.956  0.809  1.0
  O  O27  1  0.956  0.610  0.309  1.0
  O  O28  1  0.279  0.476  0.796  1.0
  O  O29  1  0.990  0.663  0.898  1.0
  O  O30  1  0.194  0.720  0.467  1.0
  O  O31  1  0.715  0.476  0.757  1.0
  O  O32  1  0.826  0.823  0.113  1.0
  O  O33  1  0.007  0.338  0.101  1.0
  O  O34  1  0.714  0.530  0.204  1.0
  O  O35  1  0.823  0.826  0.613  1.0
  O  O36  1  0.810  0.281  0.532  1.0
  O  O37  1  0.526  0.275  0.733  1.0
[/CIF]
.