The structure described by Fe3P crystallizes in the tetragonal I-4 space group. There are three inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a 4-coordinate geometry to four equivalent P(1) atoms. In the second Fe site, Fe(3) is bonded in a 2-coordinate geometry to two equivalent P(1) atoms. In the third Fe site, Fe(2) is bonded in a 3-coordinate geometry to three equivalent P(1) atoms. P(1) is bonded in a 9-coordinate geometry to two equivalent Fe(3), three equivalent Fe(2), and four equivalent Fe(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Fe3P
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.799
_cell_length_b   6.799
_cell_length_c   6.797
_cell_angle_alpha   95.978
_cell_angle_beta   95.982
_cell_angle_gamma   142.334
_symmetry_Int_Tables_number   1
_cell_volume   181.709
_cell_formula_units_Z   4
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  0.029  0.364  0.388  1.0
  Fe  Fe1  1  0.636  0.025  0.665  1.0
  Fe  Fe2  1  0.360  0.971  0.335  1.0
  Fe  Fe3  1  0.975  0.640  0.611  1.0
  Fe  Fe4  1  0.456  0.410  0.388  1.0
  Fe  Fe5  1  0.590  0.978  0.046  1.0
  Fe  Fe6  1  0.932  0.544  0.954  1.0
  Fe  Fe7  1  0.022  0.068  0.612  1.0
  Fe  Fe8  1  0.658  0.679  0.815  1.0
  Fe  Fe9  1  0.320  0.136  0.979  1.0
  Fe  Fe10  1  0.157  0.342  0.021  1.0
  Fe  Fe11  1  0.864  0.843  0.185  1.0
  P  P12  1  0.461  0.209  0.664  1.0
  P  P13  1  0.791  0.454  0.251  1.0
  P  P14  1  0.203  0.539  0.749  1.0
  P  P15  1  0.546  0.797  0.336  1.0
[/CIF]
.
The structure described by Fe3P crystallizes in the tetragonal I-4 space group. There are three inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a 4-coordinate geometry to four equivalent P(1) atoms. In the second Fe site, Fe(3) is bonded in a 2-coordinate geometry to two equivalent P(1) atoms. In the third Fe site, Fe(2) is bonded in a 3-coordinate geometry to three equivalent P(1) atoms. P(1) is bonded in a 9-coordinate geometry to two equivalent Fe(3), three equivalent Fe(2), and four equivalent Fe(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Fe3P
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.799
_cell_length_b   6.799
_cell_length_c   6.797
_cell_angle_alpha   95.978
_cell_angle_beta   95.982
_cell_angle_gamma   142.334
_symmetry_Int_Tables_number   1
_cell_volume   181.709
_cell_formula_units_Z   4
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  0.029  0.364  0.388  1.0
  Fe  Fe1  1  0.636  0.025  0.665  1.0
  Fe  Fe2  1  0.360  0.971  0.335  1.0
  Fe  Fe3  1  0.975  0.640  0.611  1.0
  Fe  Fe4  1  0.456  0.410  0.388  1.0
  Fe  Fe5  1  0.590  0.978  0.046  1.0
  Fe  Fe6  1  0.932  0.544  0.954  1.0
  Fe  Fe7  1  0.022  0.068  0.612  1.0
  Fe  Fe8  1  0.658  0.679  0.815  1.0
  Fe  Fe9  1  0.320  0.136  0.979  1.0
  Fe  Fe10  1  0.157  0.342  0.021  1.0
  Fe  Fe11  1  0.864  0.843  0.185  1.0
  P  P12  1  0.461  0.209  0.664  1.0
  P  P13  1  0.791  0.454  0.251  1.0
  P  P14  1  0.203  0.539  0.749  1.0
  P  P15  1  0.546  0.797  0.336  1.0
[/CIF]
.