The compound described by Fe2(PO3)5 crystallizes in the monoclinic Pc space group. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(10), one O(11), one O(12), one O(3), one O(6), and one O(9) atom to form FeO6 octahedra that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, corners with two equivalent P(5)O4 tetrahedra, and  an edgeedge with one Fe(2)O6 octahedra. In the second Fe site, Fe(2) is bonded to one O(1), one O(12), one O(14), one O(6), one O(7), and one O(8) atom to form distorted FeO6 octahedra that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, corners with two equivalent P(4)O4 tetrahedra, and  an edgeedge with one Fe(1)O6 octahedra. There are five inequivalent P sites. In the first P site, P(1) is bonded to one O(11), one O(4), one O(5), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one P(4)O4 tetrahedra, and  a cornercorner with one P(5)O4 tetrahedra. The corner-sharing octahedral tilt angles are 41°. In the second P site, P(2) is bonded to one O(12), one O(13), one O(2), and one O(8) atom 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 P(3)O4 tetrahedra, and  a cornercorner with one P(5)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 16-66°. In the third P site, P(3) is bonded to one O(13), one O(15), one O(6), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Fe(2)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra, and  a cornercorner with one P(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 23-63°. In the fourth P site, P(4) is bonded to one O(1), one O(14), one O(15), and one O(5) atom to form PO4 tetrahedra that share corners with two equivalent Fe(2)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, and  a cornercorner with one P(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 21-53°. In the fifth P site, P(5) is bonded to one O(10), one O(2), one O(3), and one O(4) atom to form PO4 tetrahedra that share corners with two equivalent Fe(1)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, and  a cornercorner with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 21-44°. There are fifteen inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Fe(2) and one P(4) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one P(2) and one P(5) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Fe(1) and one P(5) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one P(1) and one P(5) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one P(1) and one P(4) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Fe(1), one Fe(2), and one P(3) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Fe(2) and one P(1) atom. In the eighth O site, O(8) is bonded in a distorted linear geometry to one Fe(2) and one P(2) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one Fe(1) and one P(3) atom. In the tenth O site, O(10) is bonded in a distorted bent 150 degrees geometry to one Fe(1) and one P(5) atom. In the eleventh O site, O(11) is bonded in a bent 150 degrees geometry to one Fe(1) and one P(1) atom. In the twelfth O site, O(12) is bonded in a 3-coordinate geometry to one Fe(1), one Fe(2), and one P(2) atom. In the thirteenth O site, O(13) is bonded in a bent 150 degrees geometry to one P(2) and one P(3) atom. In the fourteenth O site, O(14) is bonded in a bent 120 degrees geometry to one Fe(2) and one P(4) atom. In the fifteenth O site, O(15) is bonded in a bent 150 degrees geometry to one P(3) and one P(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Fe2(PO3)5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.419
_cell_length_b   5.275
_cell_length_c   13.716
_cell_angle_alpha   70.968
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   575.847
_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
  Fe  Fe0  1  0.288  0.071  0.039  1.0
  Fe  Fe1  1  0.289  0.930  0.460  1.0
  Fe  Fe2  1  0.711  0.930  0.960  1.0
  Fe  Fe3  1  0.712  0.071  0.539  1.0
  P  P4  1  0.933  0.005  0.746  1.0
  P  P5  1  0.510  0.522  0.359  1.0
  P  P6  1  0.512  0.477  0.647  1.0
  P  P7  1  0.488  0.477  0.147  1.0
  P  P8  1  0.820  0.335  0.099  1.0
  P  P9  1  0.172  0.669  0.898  1.0
  P  P10  1  0.490  0.522  0.859  1.0
  P  P11  1  0.180  0.335  0.599  1.0
  P  P12  1  0.828  0.669  0.398  1.0
  P  P13  1  0.067  0.005  0.246  1.0
  O  O14  1  0.205  0.117  0.554  1.0
  O  O15  1  0.324  0.671  0.824  1.0
  O  O16  1  0.806  0.881  0.448  1.0
  O  O17  1  0.960  0.746  0.311  1.0
  O  O18  1  0.939  0.237  0.196  1.0
  O  O19  1  0.483  0.766  0.076  1.0
  O  O20  1  0.838  0.096  0.820  1.0
  O  O21  1  0.194  0.881  0.948  1.0
  O  O22  1  0.399  0.704  0.388  1.0
  O  O23  1  0.619  0.278  0.623  1.0
  O  O24  1  0.852  0.384  0.467  1.0
  O  O25  1  0.855  0.919  0.662  1.0
  O  O26  1  0.795  0.117  0.054  1.0
  O  O27  1  0.536  0.242  0.434  1.0
  O  O28  1  0.464  0.242  0.934  1.0
  O  O29  1  0.040  0.746  0.811  1.0
  O  O30  1  0.441  0.477  0.259  1.0
  O  O31  1  0.135  0.610  0.533  1.0
  O  O32  1  0.676  0.671  0.324  1.0
  O  O33  1  0.517  0.766  0.576  1.0
  O  O34  1  0.381  0.278  0.123  1.0
  O  O35  1  0.061  0.237  0.696  1.0
  O  O36  1  0.162  0.096  0.320  1.0
  O  O37  1  0.601  0.704  0.888  1.0
  O  O38  1  0.337  0.358  0.666  1.0
  O  O39  1  0.865  0.610  0.033  1.0
  O  O40  1  0.145  0.919  0.162  1.0
  O  O41  1  0.663  0.358  0.166  1.0
  O  O42  1  0.559  0.477  0.759  1.0
  O  O43  1  0.148  0.384  0.967  1.0
[/CIF]
.
The compound described by Fe2(PO3)5 crystallizes in the monoclinic Pc space group. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(10), one O(11), one O(12), one O(3), one O(6), and one O(9) atom to form FeO6 octahedra that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, corners with two equivalent P(5)O4 tetrahedra, and  an edgeedge with one Fe(2)O6 octahedra. In the second Fe site, Fe(2) is bonded to one O(1), one O(12), one O(14), one O(6), one O(7), and one O(8) atom to form distorted FeO6 octahedra that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, corners with two equivalent P(4)O4 tetrahedra, and  an edgeedge with one Fe(1)O6 octahedra. There are five inequivalent P sites. In the first P site, P(1) is bonded to one O(11), one O(4), one O(5), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one P(4)O4 tetrahedra, and  a cornercorner with one P(5)O4 tetrahedra. The corner-sharing octahedral tilt angles are 41°. In the second P site, P(2) is bonded to one O(12), one O(13), one O(2), and one O(8) atom 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 P(3)O4 tetrahedra, and  a cornercorner with one P(5)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 16-66°. In the third P site, P(3) is bonded to one O(13), one O(15), one O(6), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Fe(2)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra, and  a cornercorner with one P(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 23-63°. In the fourth P site, P(4) is bonded to one O(1), one O(14), one O(15), and one O(5) atom to form PO4 tetrahedra that share corners with two equivalent Fe(2)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, and  a cornercorner with one P(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 21-53°. In the fifth P site, P(5) is bonded to one O(10), one O(2), one O(3), and one O(4) atom to form PO4 tetrahedra that share corners with two equivalent Fe(1)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, and  a cornercorner with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 21-44°. There are fifteen inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Fe(2) and one P(4) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one P(2) and one P(5) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Fe(1) and one P(5) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one P(1) and one P(5) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one P(1) and one P(4) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Fe(1), one Fe(2), and one P(3) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Fe(2) and one P(1) atom. In the eighth O site, O(8) is bonded in a distorted linear geometry to one Fe(2) and one P(2) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one Fe(1) and one P(3) atom. In the tenth O site, O(10) is bonded in a distorted bent 150 degrees geometry to one Fe(1) and one P(5) atom. In the eleventh O site, O(11) is bonded in a bent 150 degrees geometry to one Fe(1) and one P(1) atom. In the twelfth O site, O(12) is bonded in a 3-coordinate geometry to one Fe(1), one Fe(2), and one P(2) atom. In the thirteenth O site, O(13) is bonded in a bent 150 degrees geometry to one P(2) and one P(3) atom. In the fourteenth O site, O(14) is bonded in a bent 120 degrees geometry to one Fe(2) and one P(4) atom. In the fifteenth O site, O(15) is bonded in a bent 150 degrees geometry to one P(3) and one P(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Fe2(PO3)5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.419
_cell_length_b   5.275
_cell_length_c   13.716
_cell_angle_alpha   70.968
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   575.847
_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
  Fe  Fe0  1  0.288  0.071  0.039  1.0
  Fe  Fe1  1  0.289  0.930  0.460  1.0
  Fe  Fe2  1  0.711  0.930  0.960  1.0
  Fe  Fe3  1  0.712  0.071  0.539  1.0
  P  P4  1  0.933  0.005  0.746  1.0
  P  P5  1  0.510  0.522  0.359  1.0
  P  P6  1  0.512  0.477  0.647  1.0
  P  P7  1  0.488  0.477  0.147  1.0
  P  P8  1  0.820  0.335  0.099  1.0
  P  P9  1  0.172  0.669  0.898  1.0
  P  P10  1  0.490  0.522  0.859  1.0
  P  P11  1  0.180  0.335  0.599  1.0
  P  P12  1  0.828  0.669  0.398  1.0
  P  P13  1  0.067  0.005  0.246  1.0
  O  O14  1  0.205  0.117  0.554  1.0
  O  O15  1  0.324  0.671  0.824  1.0
  O  O16  1  0.806  0.881  0.448  1.0
  O  O17  1  0.960  0.746  0.311  1.0
  O  O18  1  0.939  0.237  0.196  1.0
  O  O19  1  0.483  0.766  0.076  1.0
  O  O20  1  0.838  0.096  0.820  1.0
  O  O21  1  0.194  0.881  0.948  1.0
  O  O22  1  0.399  0.704  0.388  1.0
  O  O23  1  0.619  0.278  0.623  1.0
  O  O24  1  0.852  0.384  0.467  1.0
  O  O25  1  0.855  0.919  0.662  1.0
  O  O26  1  0.795  0.117  0.054  1.0
  O  O27  1  0.536  0.242  0.434  1.0
  O  O28  1  0.464  0.242  0.934  1.0
  O  O29  1  0.040  0.746  0.811  1.0
  O  O30  1  0.441  0.477  0.259  1.0
  O  O31  1  0.135  0.610  0.533  1.0
  O  O32  1  0.676  0.671  0.324  1.0
  O  O33  1  0.517  0.766  0.576  1.0
  O  O34  1  0.381  0.278  0.123  1.0
  O  O35  1  0.061  0.237  0.696  1.0
  O  O36  1  0.162  0.096  0.320  1.0
  O  O37  1  0.601  0.704  0.888  1.0
  O  O38  1  0.337  0.358  0.666  1.0
  O  O39  1  0.865  0.610  0.033  1.0
  O  O40  1  0.145  0.919  0.162  1.0
  O  O41  1  0.663  0.358  0.166  1.0
  O  O42  1  0.559  0.477  0.759  1.0
  O  O43  1  0.148  0.384  0.967  1.0
[/CIF]
.