The structure described by Cr3P crystallizes in the tetragonal I-4 space group. There are three inequivalent Cr sites. In the first Cr site, Cr(1) is bonded in a 4-coordinate geometry to four equivalent P(1) atoms. In the second Cr site, Cr(3) is bonded in a 2-coordinate geometry to two equivalent P(1) atoms. In the third Cr site, Cr(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 Cr(3), three equivalent Cr(2), and four equivalent Cr(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Cr3P
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.450
_cell_length_b   6.766
_cell_length_c   6.766
_cell_angle_alpha   83.785
_cell_angle_beta   70.803
_cell_angle_gamma   70.804
_symmetry_Int_Tables_number   1
_cell_volume   181.702
_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
  Cr  Cr0  1  0.359  0.670  0.613  1.0
  Cr  Cr1  1  0.027  0.613  0.330  1.0
  Cr  Cr2  1  0.971  0.387  0.670  1.0
  Cr  Cr3  1  0.642  0.330  0.387  1.0
  Cr  Cr4  1  0.939  0.056  0.611  1.0
  Cr  Cr5  1  0.450  0.611  0.944  1.0
  Cr  Cr6  1  0.005  0.389  0.056  1.0
  Cr  Cr7  1  0.606  0.944  0.389  1.0
  Cr  Cr8  1  0.161  0.975  0.176  1.0
  Cr  Cr9  1  0.663  0.176  0.025  1.0
  Cr  Cr10  1  0.864  0.824  0.975  1.0
  Cr  Cr11  1  0.312  0.025  0.824  1.0
  P  P12  1  0.215  0.246  0.334  1.0
  P  P13  1  0.451  0.334  0.754  1.0
  P  P14  1  0.539  0.666  0.246  1.0
  P  P15  1  0.795  0.754  0.666  1.0
[/CIF]
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The structure described by Cr3P crystallizes in the tetragonal I-4 space group. There are three inequivalent Cr sites. In the first Cr site, Cr(1) is bonded in a 4-coordinate geometry to four equivalent P(1) atoms. In the second Cr site, Cr(3) is bonded in a 2-coordinate geometry to two equivalent P(1) atoms. In the third Cr site, Cr(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 Cr(3), three equivalent Cr(2), and four equivalent Cr(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Cr3P
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.450
_cell_length_b   6.766
_cell_length_c   6.766
_cell_angle_alpha   83.785
_cell_angle_beta   70.803
_cell_angle_gamma   70.804
_symmetry_Int_Tables_number   1
_cell_volume   181.702
_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
  Cr  Cr0  1  0.359  0.670  0.613  1.0
  Cr  Cr1  1  0.027  0.613  0.330  1.0
  Cr  Cr2  1  0.971  0.387  0.670  1.0
  Cr  Cr3  1  0.642  0.330  0.387  1.0
  Cr  Cr4  1  0.939  0.056  0.611  1.0
  Cr  Cr5  1  0.450  0.611  0.944  1.0
  Cr  Cr6  1  0.005  0.389  0.056  1.0
  Cr  Cr7  1  0.606  0.944  0.389  1.0
  Cr  Cr8  1  0.161  0.975  0.176  1.0
  Cr  Cr9  1  0.663  0.176  0.025  1.0
  Cr  Cr10  1  0.864  0.824  0.975  1.0
  Cr  Cr11  1  0.312  0.025  0.824  1.0
  P  P12  1  0.215  0.246  0.334  1.0
  P  P13  1  0.451  0.334  0.754  1.0
  P  P14  1  0.539  0.666  0.246  1.0
  P  P15  1  0.795  0.754  0.666  1.0
[/CIF]
.