The structure described by Ce7Ni3 crystallizes in the orthorhombic Cmc2_1 space group. There are five inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a 3-coordinate geometry to one Ni(1) and two equivalent Ni(2) atoms. In the second Ce site, Ce(2) is bonded in a 3-coordinate geometry to two equivalent Ni(1) and two equivalent Ni(2) atoms. In the third Ce site, Ce(3) is bonded in a 3-coordinate geometry to one Ni(1) and three equivalent Ni(2) atoms. In the fourth Ce site, Ce(4) is bonded in a 2-coordinate geometry to four equivalent Ni(2) atoms. In the fifth Ce site, Ce(5) is bonded in a distorted L-shaped geometry to two equivalent Ni(1) and two equivalent Ni(2) atoms. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 9-coordinate geometry to one Ce(1), two equivalent Ce(2), two equivalent Ce(3), and four equivalent Ce(5) atoms. In the second Ni site, Ni(2) is bonded in a 9-coordinate geometry to one Ce(1), one Ce(2), two equivalent Ce(4), two equivalent Ce(5), and three equivalent Ce(3) atoms. is represented by the CIF file [CIF]
data_Ce7Ni3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.988
_cell_length_b   9.463
_cell_length_c   9.463
_cell_angle_alpha   119.872
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   464.942
_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
  Ce  Ce0  1  0.416  0.333  0.667  1.0
  Ce  Ce1  1  0.916  0.667  0.333  1.0
  Ce  Ce2  1  0.243  0.129  0.871  1.0
  Ce  Ce3  1  0.244  0.742  0.870  1.0
  Ce  Ce4  1  0.244  0.130  0.259  1.0
  Ce  Ce5  1  0.743  0.871  0.129  1.0
  Ce  Ce6  1  0.744  0.259  0.130  1.0
  Ce  Ce7  1  0.744  0.870  0.742  1.0
  Ce  Ce8  1  0.472  0.541  0.459  1.0
  Ce  Ce9  1  0.472  0.918  0.459  1.0
  Ce  Ce10  1  0.472  0.541  0.082  1.0
  Ce  Ce11  1  0.972  0.459  0.541  1.0
  Ce  Ce12  1  0.972  0.082  0.541  1.0
  Ce  Ce13  1  0.972  0.459  0.918  1.0
  Ni  Ni14  1  0.199  0.812  0.188  1.0
  Ni  Ni15  1  0.199  0.375  0.187  1.0
  Ni  Ni16  1  0.199  0.813  0.625  1.0
  Ni  Ni17  1  0.699  0.188  0.812  1.0
  Ni  Ni18  1  0.699  0.625  0.813  1.0
  Ni  Ni19  1  0.699  0.187  0.375  1.0
[/CIF]
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The structure described by Ce7Ni3 crystallizes in the orthorhombic Cmc2_1 space group. There are five inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a 3-coordinate geometry to one Ni(1) and two equivalent Ni(2) atoms. In the second Ce site, Ce(2) is bonded in a 3-coordinate geometry to two equivalent Ni(1) and two equivalent Ni(2) atoms. In the third Ce site, Ce(3) is bonded in a 3-coordinate geometry to one Ni(1) and three equivalent Ni(2) atoms. In the fourth Ce site, Ce(4) is bonded in a 2-coordinate geometry to four equivalent Ni(2) atoms. In the fifth Ce site, Ce(5) is bonded in a distorted L-shaped geometry to two equivalent Ni(1) and two equivalent Ni(2) atoms. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 9-coordinate geometry to one Ce(1), two equivalent Ce(2), two equivalent Ce(3), and four equivalent Ce(5) atoms. In the second Ni site, Ni(2) is bonded in a 9-coordinate geometry to one Ce(1), one Ce(2), two equivalent Ce(4), two equivalent Ce(5), and three equivalent Ce(3) atoms. is represented by the CIF file [CIF]
data_Ce7Ni3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.988
_cell_length_b   9.463
_cell_length_c   9.463
_cell_angle_alpha   119.872
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   464.942
_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
  Ce  Ce0  1  0.416  0.333  0.667  1.0
  Ce  Ce1  1  0.916  0.667  0.333  1.0
  Ce  Ce2  1  0.243  0.129  0.871  1.0
  Ce  Ce3  1  0.244  0.742  0.870  1.0
  Ce  Ce4  1  0.244  0.130  0.259  1.0
  Ce  Ce5  1  0.743  0.871  0.129  1.0
  Ce  Ce6  1  0.744  0.259  0.130  1.0
  Ce  Ce7  1  0.744  0.870  0.742  1.0
  Ce  Ce8  1  0.472  0.541  0.459  1.0
  Ce  Ce9  1  0.472  0.918  0.459  1.0
  Ce  Ce10  1  0.472  0.541  0.082  1.0
  Ce  Ce11  1  0.972  0.459  0.541  1.0
  Ce  Ce12  1  0.972  0.082  0.541  1.0
  Ce  Ce13  1  0.972  0.459  0.918  1.0
  Ni  Ni14  1  0.199  0.812  0.188  1.0
  Ni  Ni15  1  0.199  0.375  0.187  1.0
  Ni  Ni16  1  0.199  0.813  0.625  1.0
  Ni  Ni17  1  0.699  0.188  0.812  1.0
  Ni  Ni18  1  0.699  0.625  0.813  1.0
  Ni  Ni19  1  0.699  0.187  0.375  1.0
[/CIF]
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