The material structure described by Fe2P3O13 crystallizes in the triclinic P-1 space group. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(1), one O(10), one O(13), one O(3), one O(6), and one O(8) atom to form distorted FeO6 octahedra that share  a cornercorner with one P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, and corners with two equivalent P(3)O4 tetrahedra. In the second Fe site, Fe(2) is bonded to one O(11), one O(12), one O(2), one O(5), one O(7), and one O(9) atom to form FeO6 octahedra that share  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, and corners with three equivalent P(1)O4 tetrahedra. There are three inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(11), one O(2), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Fe(1)O6 octahedra and corners with three equivalent Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 3-43°. In the second P site, P(2) is bonded to one O(13), one O(4), one O(6), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Fe(2)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, and  a cornercorner with one P(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 22-53°. In the third P site, P(3) is bonded to one O(10), one O(3), one O(4), and one O(5) atom to form PO4 tetrahedra that share  a cornercorner with one Fe(2)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, and  a cornercorner with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 30-51°. There are thirteen inequivalent O sites. In the first O site, O(13) is bonded in a bent 120 degrees geometry to one Fe(1) and one P(2) atom. In the second O site, O(1) is bonded in a linear geometry to one Fe(1) and one P(1) atom. In the third O site, O(2) is bonded in a linear geometry to one Fe(2) and one P(1) atom. In the fourth O site, O(3) is bonded in a bent 120 degrees geometry to one Fe(1) and one P(3) atom. In the fifth O site, O(4) is bonded in a bent 120 degrees geometry to one P(2) and one P(3) atom. In the sixth O site, O(5) is bonded in a bent 150 degrees geometry to one Fe(2) and one P(3) atom. In the seventh O site, O(6) is bonded in a bent 150 degrees geometry to one Fe(1) and one P(2) atom. In the eighth O site, O(7) is bonded in a bent 150 degrees geometry to one Fe(2) and one P(2) atom. In the ninth O site, O(8) is bonded in a bent 120 degrees geometry to one Fe(1) and one O(8) atom. In the tenth O site, O(9) is bonded in a distorted bent 150 degrees geometry to one Fe(2) and one P(1) atom. In the eleventh O site, O(10) is bonded in a distorted bent 150 degrees geometry to one Fe(1) and one P(3) atom. In the twelfth O site, O(11) is bonded in a bent 150 degrees geometry to one Fe(2) and one P(1) atom. In the thirteenth O site, O(12) is bonded in a single-bond geometry to one Fe(2) atom. is represented by the CIF file [CIF]
data_Fe2P3O13
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.371
_cell_length_b   7.758
_cell_length_c   11.114
_cell_angle_alpha   74.141
_cell_angle_beta   86.188
_cell_angle_gamma   79.217
_symmetry_Int_Tables_number   1
_cell_volume   518.986
_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  0.758  0.727  0.406  1.0
  Fe  Fe1  1  0.242  0.273  0.594  1.0
  Fe  Fe2  1  0.806  0.807  0.888  1.0
  Fe  Fe3  1  0.194  0.193  0.112  1.0
  P  P4  1  0.278  0.938  0.883  1.0
  P  P5  1  0.764  0.205  0.660  1.0
  P  P6  1  0.881  0.523  0.700  1.0
  P  P7  1  0.722  0.062  0.117  1.0
  P  P8  1  0.236  0.795  0.340  1.0
  P  P9  1  0.119  0.477  0.300  1.0
  O  O10  1  0.741  0.922  0.244  1.0
  O  O11  1  0.256  0.033  0.990  1.0
  O  O12  1  0.114  0.473  0.657  1.0
  O  O13  1  0.210  0.668  0.249  1.0
  O  O14  1  0.133  0.402  0.187  1.0
  O  O15  1  0.550  0.281  0.596  1.0
  O  O16  1  0.768  0.011  0.741  1.0
  O  O17  1  0.582  0.011  0.469  1.0
  O  O18  1  0.744  0.967  0.010  1.0
  O  O19  1  0.259  0.078  0.756  1.0
  O  O20  1  0.507  0.200  0.108  1.0
  O  O21  1  0.260  0.357  0.408  1.0
  O  O22  1  0.886  0.527  0.343  1.0
  O  O23  1  0.493  0.800  0.892  1.0
  O  O24  1  0.867  0.598  0.813  1.0
  O  O25  1  0.418  0.989  0.531  1.0
  O  O26  1  0.114  0.808  0.902  1.0
  O  O27  1  0.450  0.719  0.404  1.0
  O  O28  1  0.886  0.192  0.098  1.0
  O  O29  1  0.232  0.989  0.259  1.0
  O  O30  1  0.235  0.350  0.937  1.0
  O  O31  1  0.765  0.650  0.063  1.0
  O  O32  1  0.790  0.332  0.751  1.0
  O  O33  1  0.955  0.211  0.569  1.0
  O  O34  1  0.045  0.789  0.431  1.0
  O  O35  1  0.740  0.643  0.592  1.0
[/CIF]
.
The material structure described by Fe2P3O13 crystallizes in the triclinic P-1 space group. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(1), one O(10), one O(13), one O(3), one O(6), and one O(8) atom to form distorted FeO6 octahedra that share  a cornercorner with one P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, and corners with two equivalent P(3)O4 tetrahedra. In the second Fe site, Fe(2) is bonded to one O(11), one O(12), one O(2), one O(5), one O(7), and one O(9) atom to form FeO6 octahedra that share  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, and corners with three equivalent P(1)O4 tetrahedra. There are three inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(11), one O(2), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Fe(1)O6 octahedra and corners with three equivalent Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 3-43°. In the second P site, P(2) is bonded to one O(13), one O(4), one O(6), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Fe(2)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, and  a cornercorner with one P(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 22-53°. In the third P site, P(3) is bonded to one O(10), one O(3), one O(4), and one O(5) atom to form PO4 tetrahedra that share  a cornercorner with one Fe(2)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, and  a cornercorner with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 30-51°. There are thirteen inequivalent O sites. In the first O site, O(13) is bonded in a bent 120 degrees geometry to one Fe(1) and one P(2) atom. In the second O site, O(1) is bonded in a linear geometry to one Fe(1) and one P(1) atom. In the third O site, O(2) is bonded in a linear geometry to one Fe(2) and one P(1) atom. In the fourth O site, O(3) is bonded in a bent 120 degrees geometry to one Fe(1) and one P(3) atom. In the fifth O site, O(4) is bonded in a bent 120 degrees geometry to one P(2) and one P(3) atom. In the sixth O site, O(5) is bonded in a bent 150 degrees geometry to one Fe(2) and one P(3) atom. In the seventh O site, O(6) is bonded in a bent 150 degrees geometry to one Fe(1) and one P(2) atom. In the eighth O site, O(7) is bonded in a bent 150 degrees geometry to one Fe(2) and one P(2) atom. In the ninth O site, O(8) is bonded in a bent 120 degrees geometry to one Fe(1) and one O(8) atom. In the tenth O site, O(9) is bonded in a distorted bent 150 degrees geometry to one Fe(2) and one P(1) atom. In the eleventh O site, O(10) is bonded in a distorted bent 150 degrees geometry to one Fe(1) and one P(3) atom. In the twelfth O site, O(11) is bonded in a bent 150 degrees geometry to one Fe(2) and one P(1) atom. In the thirteenth O site, O(12) is bonded in a single-bond geometry to one Fe(2) atom. is represented by the CIF file [CIF]
data_Fe2P3O13
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.371
_cell_length_b   7.758
_cell_length_c   11.114
_cell_angle_alpha   74.141
_cell_angle_beta   86.188
_cell_angle_gamma   79.217
_symmetry_Int_Tables_number   1
_cell_volume   518.986
_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  0.758  0.727  0.406  1.0
  Fe  Fe1  1  0.242  0.273  0.594  1.0
  Fe  Fe2  1  0.806  0.807  0.888  1.0
  Fe  Fe3  1  0.194  0.193  0.112  1.0
  P  P4  1  0.278  0.938  0.883  1.0
  P  P5  1  0.764  0.205  0.660  1.0
  P  P6  1  0.881  0.523  0.700  1.0
  P  P7  1  0.722  0.062  0.117  1.0
  P  P8  1  0.236  0.795  0.340  1.0
  P  P9  1  0.119  0.477  0.300  1.0
  O  O10  1  0.741  0.922  0.244  1.0
  O  O11  1  0.256  0.033  0.990  1.0
  O  O12  1  0.114  0.473  0.657  1.0
  O  O13  1  0.210  0.668  0.249  1.0
  O  O14  1  0.133  0.402  0.187  1.0
  O  O15  1  0.550  0.281  0.596  1.0
  O  O16  1  0.768  0.011  0.741  1.0
  O  O17  1  0.582  0.011  0.469  1.0
  O  O18  1  0.744  0.967  0.010  1.0
  O  O19  1  0.259  0.078  0.756  1.0
  O  O20  1  0.507  0.200  0.108  1.0
  O  O21  1  0.260  0.357  0.408  1.0
  O  O22  1  0.886  0.527  0.343  1.0
  O  O23  1  0.493  0.800  0.892  1.0
  O  O24  1  0.867  0.598  0.813  1.0
  O  O25  1  0.418  0.989  0.531  1.0
  O  O26  1  0.114  0.808  0.902  1.0
  O  O27  1  0.450  0.719  0.404  1.0
  O  O28  1  0.886  0.192  0.098  1.0
  O  O29  1  0.232  0.989  0.259  1.0
  O  O30  1  0.235  0.350  0.937  1.0
  O  O31  1  0.765  0.650  0.063  1.0
  O  O32  1  0.790  0.332  0.751  1.0
  O  O33  1  0.955  0.211  0.569  1.0
  O  O34  1  0.045  0.789  0.431  1.0
  O  O35  1  0.740  0.643  0.592  1.0
[/CIF]
.