The structure described by LiMn2Fe2(PO4)4 crystallizes in the monoclinic Pm space group. Li(1) is bonded to one O(12), one O(2), and two equivalent O(10) atoms to form LiO4 tetrahedra that share  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Mn(2)O6 pentagonal pyramid, corners with two equivalent Fe(1)O6 pentagonal pyramids, corners with two equivalent P(1)O4 tetrahedra, corners with two equivalent P(4)O4 tetrahedra, and  an edgeedge with one Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles are 67°. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(5), two equivalent O(3), and two equivalent O(4) atoms to form distorted MnO6 octahedra 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(1)O4 tetrahedra, and  an edgeedge with one P(2)O4 tetrahedra. In the second Mn site, Mn(2) is bonded to one O(2), one O(6), two equivalent O(3), and two equivalent O(4) atoms to form distorted MnO6 pentagonal pyramids that share corners with four equivalent Mn(1)O6 octahedra,  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, and  an edgeedge with one P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 50-51°. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(11), one O(7), two equivalent O(10), and two equivalent O(9) atoms to form FeO6 pentagonal pyramids that share corners with four equivalent Fe(2)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, and  an edgeedge with one P(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 51-54°. In the second Fe site, Fe(2) is bonded to one O(12), one O(8), two equivalent O(10), and two equivalent O(9) atoms to form distorted FeO6 octahedra that share corners with four equivalent Fe(1)O6 pentagonal pyramids,  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, corners with two equivalent P(4)O4 tetrahedra,  an edgeedge with one Li(1)O4 tetrahedra, and  an edgeedge with one P(3)O4 tetrahedra. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(12), one O(2), and two equivalent O(3) atoms to form PO4 tetrahedra that share  a cornercorner with one Fe(2)O6 octahedra, corners with two equivalent Mn(1)O6 octahedra,  a cornercorner with one Mn(2)O6 pentagonal pyramid, corners with two equivalent Li(1)O4 tetrahedra, and  an edgeedge with one Mn(2)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 40-52°. In the second P site, P(2) is bonded to one O(5), one O(7), and two equivalent O(4) atoms to form PO4 tetrahedra that share  a cornercorner with one Mn(1)O6 octahedra,  a cornercorner with one Fe(1)O6 pentagonal pyramid, corners with two equivalent Mn(2)O6 pentagonal pyramids, and  an edgeedge with one Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles are 48°. In the third P site, P(3) is bonded to one O(6), one O(8), and two equivalent O(9) atoms to form PO4 tetrahedra that share  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Mn(2)O6 pentagonal pyramid, corners with two equivalent Fe(1)O6 pentagonal pyramids, and  an edgeedge with one Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles are 45°. In the fourth P site, P(4) is bonded to one O(1), one O(11), and two equivalent O(10) atoms to form PO4 tetrahedra that share  a cornercorner with one Mn(1)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra,  a cornercorner with one Fe(1)O6 pentagonal pyramid, corners with two equivalent Li(1)O4 tetrahedra, and  an edgeedge with one Fe(1)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 42-63°. 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(4) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Li(1), one Mn(2), and one P(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Mn(1), one Mn(2), 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(2) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Mn(1) and one P(2) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Mn(2) and one P(3) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one Fe(1) and one P(2) atom. In the eighth O site, O(8) is bonded in a distorted bent 150 degrees geometry to one Fe(2) and one P(3) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Fe(1), one Fe(2), and one P(3) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Li(1), one Fe(1), one Fe(2), and one P(4) atom. In the eleventh O site, O(11) is bonded in a bent 150 degrees geometry to one Fe(1) and one P(4) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one Li(1), one Fe(2), and one P(1) atom. is represented by the CIF card [CIF]
data_LiMn2Fe2(PO4)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.934
_cell_length_b   5.990
_cell_length_c   4.980
_cell_angle_alpha   90.001
_cell_angle_beta   89.534
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   296.295
_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
  Li  Li0  1  0.942  0.250  0.935  1.0
  Mn  Mn1  1  0.218  0.750  0.428  1.0
  Mn  Mn2  1  0.289  0.250  0.920  1.0
  Fe  Fe3  1  0.723  0.750  0.055  1.0
  Fe  Fe4  1  0.762  0.250  0.519  1.0
  P  P5  1  0.100  0.250  0.407  1.0
  P  P6  1  0.402  0.750  0.908  1.0
  P  P7  1  0.592  0.250  0.072  1.0
  P  P8  1  0.906  0.750  0.619  1.0
  O  O9  1  0.060  0.750  0.653  1.0
  O  O10  1  0.116  0.250  0.718  1.0
  O  O11  1  0.173  0.048  0.269  1.0
  O  O12  1  0.173  0.452  0.269  1.0
  O  O13  1  0.330  0.549  0.766  1.0
  O  O14  1  0.330  0.951  0.766  1.0
  O  O15  1  0.378  0.750  0.215  1.0
  O  O16  1  0.440  0.250  0.149  1.0
  O  O17  1  0.553  0.750  0.852  1.0
  O  O18  1  0.608  0.250  0.770  1.0
  O  O19  1  0.664  0.047  0.213  1.0
  O  O20  1  0.664  0.453  0.213  1.0
  O  O21  1  0.843  0.546  0.777  1.0
  O  O22  1  0.843  0.954  0.777  1.0
  O  O23  1  0.867  0.750  0.323  1.0
  O  O24  1  0.950  0.250  0.335  1.0
[/CIF]
.
The structure described by LiMn2Fe2(PO4)4 crystallizes in the monoclinic Pm space group. Li(1) is bonded to one O(12), one O(2), and two equivalent O(10) atoms to form LiO4 tetrahedra that share  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Mn(2)O6 pentagonal pyramid, corners with two equivalent Fe(1)O6 pentagonal pyramids, corners with two equivalent P(1)O4 tetrahedra, corners with two equivalent P(4)O4 tetrahedra, and  an edgeedge with one Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles are 67°. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(5), two equivalent O(3), and two equivalent O(4) atoms to form distorted MnO6 octahedra 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(1)O4 tetrahedra, and  an edgeedge with one P(2)O4 tetrahedra. In the second Mn site, Mn(2) is bonded to one O(2), one O(6), two equivalent O(3), and two equivalent O(4) atoms to form distorted MnO6 pentagonal pyramids that share corners with four equivalent Mn(1)O6 octahedra,  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, and  an edgeedge with one P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 50-51°. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(11), one O(7), two equivalent O(10), and two equivalent O(9) atoms to form FeO6 pentagonal pyramids that share corners with four equivalent Fe(2)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, and  an edgeedge with one P(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 51-54°. In the second Fe site, Fe(2) is bonded to one O(12), one O(8), two equivalent O(10), and two equivalent O(9) atoms to form distorted FeO6 octahedra that share corners with four equivalent Fe(1)O6 pentagonal pyramids,  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, corners with two equivalent P(4)O4 tetrahedra,  an edgeedge with one Li(1)O4 tetrahedra, and  an edgeedge with one P(3)O4 tetrahedra. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(12), one O(2), and two equivalent O(3) atoms to form PO4 tetrahedra that share  a cornercorner with one Fe(2)O6 octahedra, corners with two equivalent Mn(1)O6 octahedra,  a cornercorner with one Mn(2)O6 pentagonal pyramid, corners with two equivalent Li(1)O4 tetrahedra, and  an edgeedge with one Mn(2)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 40-52°. In the second P site, P(2) is bonded to one O(5), one O(7), and two equivalent O(4) atoms to form PO4 tetrahedra that share  a cornercorner with one Mn(1)O6 octahedra,  a cornercorner with one Fe(1)O6 pentagonal pyramid, corners with two equivalent Mn(2)O6 pentagonal pyramids, and  an edgeedge with one Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles are 48°. In the third P site, P(3) is bonded to one O(6), one O(8), and two equivalent O(9) atoms to form PO4 tetrahedra that share  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Mn(2)O6 pentagonal pyramid, corners with two equivalent Fe(1)O6 pentagonal pyramids, and  an edgeedge with one Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles are 45°. In the fourth P site, P(4) is bonded to one O(1), one O(11), and two equivalent O(10) atoms to form PO4 tetrahedra that share  a cornercorner with one Mn(1)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra,  a cornercorner with one Fe(1)O6 pentagonal pyramid, corners with two equivalent Li(1)O4 tetrahedra, and  an edgeedge with one Fe(1)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 42-63°. 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(4) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Li(1), one Mn(2), and one P(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Mn(1), one Mn(2), 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(2) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Mn(1) and one P(2) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Mn(2) and one P(3) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one Fe(1) and one P(2) atom. In the eighth O site, O(8) is bonded in a distorted bent 150 degrees geometry to one Fe(2) and one P(3) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Fe(1), one Fe(2), and one P(3) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Li(1), one Fe(1), one Fe(2), and one P(4) atom. In the eleventh O site, O(11) is bonded in a bent 150 degrees geometry to one Fe(1) and one P(4) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one Li(1), one Fe(2), and one P(1) atom. is represented by the CIF card [CIF]
data_LiMn2Fe2(PO4)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.934
_cell_length_b   5.990
_cell_length_c   4.980
_cell_angle_alpha   90.001
_cell_angle_beta   89.534
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   296.295
_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
  Li  Li0  1  0.942  0.250  0.935  1.0
  Mn  Mn1  1  0.218  0.750  0.428  1.0
  Mn  Mn2  1  0.289  0.250  0.920  1.0
  Fe  Fe3  1  0.723  0.750  0.055  1.0
  Fe  Fe4  1  0.762  0.250  0.519  1.0
  P  P5  1  0.100  0.250  0.407  1.0
  P  P6  1  0.402  0.750  0.908  1.0
  P  P7  1  0.592  0.250  0.072  1.0
  P  P8  1  0.906  0.750  0.619  1.0
  O  O9  1  0.060  0.750  0.653  1.0
  O  O10  1  0.116  0.250  0.718  1.0
  O  O11  1  0.173  0.048  0.269  1.0
  O  O12  1  0.173  0.452  0.269  1.0
  O  O13  1  0.330  0.549  0.766  1.0
  O  O14  1  0.330  0.951  0.766  1.0
  O  O15  1  0.378  0.750  0.215  1.0
  O  O16  1  0.440  0.250  0.149  1.0
  O  O17  1  0.553  0.750  0.852  1.0
  O  O18  1  0.608  0.250  0.770  1.0
  O  O19  1  0.664  0.047  0.213  1.0
  O  O20  1  0.664  0.453  0.213  1.0
  O  O21  1  0.843  0.546  0.777  1.0
  O  O22  1  0.843  0.954  0.777  1.0
  O  O23  1  0.867  0.750  0.323  1.0
  O  O24  1  0.950  0.250  0.335  1.0
[/CIF]
.