The crystal structure described by CeP2 crystallizes in the monoclinic Cc space group. There are four inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a 9-coordinate geometry to one P(1), one P(2), one P(5), one P(7), one P(8), two equivalent P(3), and two equivalent P(6) atoms. In the second Ce site, Ce(2) is bonded in a 9-coordinate geometry to one P(1), one P(2), one P(3), one P(5), one P(8), two equivalent P(4), and two equivalent P(7) atoms. In the third Ce site, Ce(3) is bonded in a 9-coordinate geometry to one P(1), one P(2), one P(5), one P(6), one P(8), two equivalent P(3), and two equivalent P(4) atoms. In the fourth Ce site, Ce(4) is bonded in a 9-coordinate geometry to one P(1), one P(2), one P(4), one P(5), one P(8), two equivalent P(6), and two equivalent P(7) atoms. There are eight inequivalent P sites. In the first P site, P(1) is bonded in a 6-coordinate geometry to one Ce(1), one Ce(2), one Ce(3), one Ce(4), one P(2), and one P(5) atom. In the second P site, P(2) is bonded in a 6-coordinate geometry to one Ce(1), one Ce(2), one Ce(3), one Ce(4), one P(1), and one P(4) atom. In the third P site, P(3) is bonded in a 6-coordinate geometry to one Ce(2), two equivalent Ce(1), two equivalent Ce(3), and one P(5) atom. In the fourth P site, P(4) is bonded in a 6-coordinate geometry to one Ce(4), two equivalent Ce(2), two equivalent Ce(3), and one P(2) atom. In the fifth P site, P(5) is bonded in a 6-coordinate geometry to one Ce(1), one Ce(2), one Ce(3), one Ce(4), one P(1), and one P(3) atom. In the sixth P site, P(6) is bonded to one Ce(3), two equivalent Ce(1), two equivalent Ce(4), and one P(8) atom to form a mixture of distorted corner, face, and edge-sharing PCe5P octahedra. The corner-sharing octahedral tilt angles range from 38-55°. In the seventh P site, P(7) is bonded to one Ce(1), two equivalent Ce(2), two equivalent Ce(4), and one P(8) atom to form a mixture of distorted corner, face, and edge-sharing PCe5P pentagonal pyramids. The corner-sharing octahedral tilt angles range from 35-49°. In the eighth P site, P(8) is bonded in a 6-coordinate geometry to one Ce(1), one Ce(2), one Ce(3), one Ce(4), one P(6), and one P(7) atom. is represented by the CIF file [CIF]
data_CeP2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.615
_cell_length_b   8.534
_cell_length_c   9.111
_cell_angle_alpha   118.041
_cell_angle_beta   118.330
_cell_angle_gamma   89.787
_symmetry_Int_Tables_number   1
_cell_volume   499.209
_cell_formula_units_Z   8
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
  Ce  Ce0  1  0.244  0.093  0.916  1.0
  Ce  Ce1  1  0.328  0.677  0.084  1.0
  Ce  Ce2  1  0.725  0.475  0.084  1.0
  Ce  Ce3  1  0.641  0.891  0.916  1.0
  Ce  Ce4  1  0.882  0.493  0.552  1.0
  Ce  Ce5  1  0.330  0.441  0.448  1.0
  Ce  Ce6  1  0.708  0.122  0.617  1.0
  Ce  Ce7  1  0.091  0.006  0.383  1.0
  P  P8  1  0.120  0.626  0.251  1.0
  P  P9  1  0.868  0.875  0.749  1.0
  P  P10  1  0.007  0.306  0.059  1.0
  P  P11  1  0.948  0.747  0.941  1.0
  P  P12  1  0.265  0.707  0.744  1.0
  P  P13  1  0.521  0.463  0.256  1.0
  P  P14  1  0.930  0.242  0.232  1.0
  P  P15  1  0.698  0.510  0.768  1.0
  P  P16  1  0.062  0.732  0.492  1.0
  P  P17  1  0.570  0.741  0.508  1.0
  P  P18  1  0.343  0.064  0.261  1.0
  P  P19  1  0.082  0.302  0.739  1.0
  P  P20  1  0.711  0.863  0.250  1.0
  P  P21  1  0.461  0.112  0.750  1.0
  P  P22  1  0.597  0.098  0.255  1.0
  P  P23  1  0.342  0.343  0.745  1.0
[/CIF]
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The crystal structure described by CeP2 crystallizes in the monoclinic Cc space group. There are four inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a 9-coordinate geometry to one P(1), one P(2), one P(5), one P(7), one P(8), two equivalent P(3), and two equivalent P(6) atoms. In the second Ce site, Ce(2) is bonded in a 9-coordinate geometry to one P(1), one P(2), one P(3), one P(5), one P(8), two equivalent P(4), and two equivalent P(7) atoms. In the third Ce site, Ce(3) is bonded in a 9-coordinate geometry to one P(1), one P(2), one P(5), one P(6), one P(8), two equivalent P(3), and two equivalent P(4) atoms. In the fourth Ce site, Ce(4) is bonded in a 9-coordinate geometry to one P(1), one P(2), one P(4), one P(5), one P(8), two equivalent P(6), and two equivalent P(7) atoms. There are eight inequivalent P sites. In the first P site, P(1) is bonded in a 6-coordinate geometry to one Ce(1), one Ce(2), one Ce(3), one Ce(4), one P(2), and one P(5) atom. In the second P site, P(2) is bonded in a 6-coordinate geometry to one Ce(1), one Ce(2), one Ce(3), one Ce(4), one P(1), and one P(4) atom. In the third P site, P(3) is bonded in a 6-coordinate geometry to one Ce(2), two equivalent Ce(1), two equivalent Ce(3), and one P(5) atom. In the fourth P site, P(4) is bonded in a 6-coordinate geometry to one Ce(4), two equivalent Ce(2), two equivalent Ce(3), and one P(2) atom. In the fifth P site, P(5) is bonded in a 6-coordinate geometry to one Ce(1), one Ce(2), one Ce(3), one Ce(4), one P(1), and one P(3) atom. In the sixth P site, P(6) is bonded to one Ce(3), two equivalent Ce(1), two equivalent Ce(4), and one P(8) atom to form a mixture of distorted corner, face, and edge-sharing PCe5P octahedra. The corner-sharing octahedral tilt angles range from 38-55°. In the seventh P site, P(7) is bonded to one Ce(1), two equivalent Ce(2), two equivalent Ce(4), and one P(8) atom to form a mixture of distorted corner, face, and edge-sharing PCe5P pentagonal pyramids. The corner-sharing octahedral tilt angles range from 35-49°. In the eighth P site, P(8) is bonded in a 6-coordinate geometry to one Ce(1), one Ce(2), one Ce(3), one Ce(4), one P(6), and one P(7) atom. is represented by the CIF file [CIF]
data_CeP2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.615
_cell_length_b   8.534
_cell_length_c   9.111
_cell_angle_alpha   118.041
_cell_angle_beta   118.330
_cell_angle_gamma   89.787
_symmetry_Int_Tables_number   1
_cell_volume   499.209
_cell_formula_units_Z   8
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
  Ce  Ce0  1  0.244  0.093  0.916  1.0
  Ce  Ce1  1  0.328  0.677  0.084  1.0
  Ce  Ce2  1  0.725  0.475  0.084  1.0
  Ce  Ce3  1  0.641  0.891  0.916  1.0
  Ce  Ce4  1  0.882  0.493  0.552  1.0
  Ce  Ce5  1  0.330  0.441  0.448  1.0
  Ce  Ce6  1  0.708  0.122  0.617  1.0
  Ce  Ce7  1  0.091  0.006  0.383  1.0
  P  P8  1  0.120  0.626  0.251  1.0
  P  P9  1  0.868  0.875  0.749  1.0
  P  P10  1  0.007  0.306  0.059  1.0
  P  P11  1  0.948  0.747  0.941  1.0
  P  P12  1  0.265  0.707  0.744  1.0
  P  P13  1  0.521  0.463  0.256  1.0
  P  P14  1  0.930  0.242  0.232  1.0
  P  P15  1  0.698  0.510  0.768  1.0
  P  P16  1  0.062  0.732  0.492  1.0
  P  P17  1  0.570  0.741  0.508  1.0
  P  P18  1  0.343  0.064  0.261  1.0
  P  P19  1  0.082  0.302  0.739  1.0
  P  P20  1  0.711  0.863  0.250  1.0
  P  P21  1  0.461  0.112  0.750  1.0
  P  P22  1  0.597  0.098  0.255  1.0
  P  P23  1  0.342  0.343  0.745  1.0
[/CIF]
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