The crystal structure described by MnFe3(PO4)4 crystallizes in the monoclinic Pm space group. Mn(1) is bonded to one O(12), one O(4), two equivalent O(2), and two equivalent O(8) atoms to form distorted MnO6 pentagonal pyramids that share corners with four equivalent Fe(2)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 49-50°. There are three inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(3), one O(7), two equivalent O(11), and two equivalent O(5) atoms to form distorted FeO6 octahedra that share corners with four equivalent Fe(3)O6 octahedra,  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 corner-sharing octahedral tilt angles range from 48-49°. In the second Fe site, Fe(2) is bonded to one O(10), one O(6), two equivalent O(2), and two equivalent O(8) atoms to form distorted FeO6 octahedra that share corners with four equivalent Mn(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. In the third Fe site, Fe(3) is bonded to one O(1), one O(9), two equivalent O(11), and two equivalent O(5) atoms to form distorted FeO6 octahedra that share corners with four equivalent Fe(1)O6 octahedra,  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 corner-sharing octahedral tilt angles range from 48-49°. 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 Fe(2)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra, corners with two equivalent Mn(1)O6 pentagonal pyramids, and  an edgeedge with one Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-44°. 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 Fe(2)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, and  an edgeedge with one Fe(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 42-56°. 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  a cornercorner with one Fe(1)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra,  a cornercorner with one Mn(1)O6 pentagonal pyramid, and  an edgeedge with one Mn(1)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 37-53°. 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 Fe(1)O6 octahedra, corners with two equivalent Fe(3)O6 octahedra,  a cornercorner with one Mn(1)O6 pentagonal pyramid, and  an edgeedge with one Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-56°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Fe(3) and one P(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Mn(1), one Fe(2), and one P(1) atom. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Fe(1) and one P(4) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Mn(1) and one P(3) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Fe(1), one Fe(3), and one P(2) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Fe(2) and one P(2) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one Fe(1) and one P(3) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Mn(1), one Fe(2), and one P(3) atom. In the ninth O site, O(9) is bonded in a distorted bent 150 degrees geometry to one Fe(3) and one P(2) atom. In the tenth O site, O(10) is bonded in a distorted bent 150 degrees geometry to one Fe(2) and one P(1) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Fe(1), one Fe(3), and one P(4) atom. In the twelfth O site, O(12) is bonded in a distorted bent 150 degrees geometry to one Mn(1) and one P(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_MnFe3(PO4)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.962
_cell_length_b   4.900
_cell_length_c   9.920
_cell_angle_alpha   89.576
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   289.793
_cell_formula_units_Z   1
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  0.000  0.060  0.282  1.0
  Fe  Fe1  1  0.000  0.468  0.773  1.0
  Fe  Fe2  1  0.500  0.537  0.224  1.0
  Fe  Fe3  1  0.500  0.968  0.727  1.0
  P  P4  1  0.500  0.081  0.403  1.0
  P  P5  1  0.500  0.415  0.903  1.0
  P  P6  1  0.000  0.581  0.100  1.0
  P  P7  1  0.000  0.921  0.596  1.0
  O  O8  1  0.500  0.148  0.553  1.0
  O  O9  1  0.301  0.230  0.329  1.0
  O  O10  1  0.699  0.230  0.329  1.0
  O  O11  1  0.000  0.229  0.617  1.0
  O  O12  1  0.000  0.267  0.119  1.0
  O  O13  1  0.299  0.272  0.827  1.0
  O  O14  1  0.701  0.272  0.827  1.0
  O  O15  1  0.500  0.344  0.053  1.0
  O  O16  1  0.000  0.640  0.948  1.0
  O  O17  1  0.796  0.719  0.171  1.0
  O  O18  1  0.204  0.719  0.171  1.0
  O  O19  1  0.500  0.723  0.880  1.0
  O  O20  1  0.500  0.774  0.381  1.0
  O  O21  1  0.799  0.775  0.671  1.0
  O  O22  1  0.201  0.775  0.671  1.0
  O  O23  1  0.000  0.852  0.446  1.0
[/CIF]
.
The crystal structure described by MnFe3(PO4)4 crystallizes in the monoclinic Pm space group. Mn(1) is bonded to one O(12), one O(4), two equivalent O(2), and two equivalent O(8) atoms to form distorted MnO6 pentagonal pyramids that share corners with four equivalent Fe(2)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 49-50°. There are three inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(3), one O(7), two equivalent O(11), and two equivalent O(5) atoms to form distorted FeO6 octahedra that share corners with four equivalent Fe(3)O6 octahedra,  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 corner-sharing octahedral tilt angles range from 48-49°. In the second Fe site, Fe(2) is bonded to one O(10), one O(6), two equivalent O(2), and two equivalent O(8) atoms to form distorted FeO6 octahedra that share corners with four equivalent Mn(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. In the third Fe site, Fe(3) is bonded to one O(1), one O(9), two equivalent O(11), and two equivalent O(5) atoms to form distorted FeO6 octahedra that share corners with four equivalent Fe(1)O6 octahedra,  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 corner-sharing octahedral tilt angles range from 48-49°. 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 Fe(2)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra, corners with two equivalent Mn(1)O6 pentagonal pyramids, and  an edgeedge with one Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-44°. 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 Fe(2)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, and  an edgeedge with one Fe(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 42-56°. 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  a cornercorner with one Fe(1)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra,  a cornercorner with one Mn(1)O6 pentagonal pyramid, and  an edgeedge with one Mn(1)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 37-53°. 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 Fe(1)O6 octahedra, corners with two equivalent Fe(3)O6 octahedra,  a cornercorner with one Mn(1)O6 pentagonal pyramid, and  an edgeedge with one Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-56°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Fe(3) and one P(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Mn(1), one Fe(2), and one P(1) atom. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Fe(1) and one P(4) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Mn(1) and one P(3) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Fe(1), one Fe(3), and one P(2) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Fe(2) and one P(2) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one Fe(1) and one P(3) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Mn(1), one Fe(2), and one P(3) atom. In the ninth O site, O(9) is bonded in a distorted bent 150 degrees geometry to one Fe(3) and one P(2) atom. In the tenth O site, O(10) is bonded in a distorted bent 150 degrees geometry to one Fe(2) and one P(1) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Fe(1), one Fe(3), and one P(4) atom. In the twelfth O site, O(12) is bonded in a distorted bent 150 degrees geometry to one Mn(1) and one P(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_MnFe3(PO4)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.962
_cell_length_b   4.900
_cell_length_c   9.920
_cell_angle_alpha   89.576
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   289.793
_cell_formula_units_Z   1
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  0.000  0.060  0.282  1.0
  Fe  Fe1  1  0.000  0.468  0.773  1.0
  Fe  Fe2  1  0.500  0.537  0.224  1.0
  Fe  Fe3  1  0.500  0.968  0.727  1.0
  P  P4  1  0.500  0.081  0.403  1.0
  P  P5  1  0.500  0.415  0.903  1.0
  P  P6  1  0.000  0.581  0.100  1.0
  P  P7  1  0.000  0.921  0.596  1.0
  O  O8  1  0.500  0.148  0.553  1.0
  O  O9  1  0.301  0.230  0.329  1.0
  O  O10  1  0.699  0.230  0.329  1.0
  O  O11  1  0.000  0.229  0.617  1.0
  O  O12  1  0.000  0.267  0.119  1.0
  O  O13  1  0.299  0.272  0.827  1.0
  O  O14  1  0.701  0.272  0.827  1.0
  O  O15  1  0.500  0.344  0.053  1.0
  O  O16  1  0.000  0.640  0.948  1.0
  O  O17  1  0.796  0.719  0.171  1.0
  O  O18  1  0.204  0.719  0.171  1.0
  O  O19  1  0.500  0.723  0.880  1.0
  O  O20  1  0.500  0.774  0.381  1.0
  O  O21  1  0.799  0.775  0.671  1.0
  O  O22  1  0.201  0.775  0.671  1.0
  O  O23  1  0.000  0.852  0.446  1.0
[/CIF]
.